DOCUMENT AND ENTITY INFORMATION - USD ($)	12 Months Ended
DOCUMENT AND ENTITY INFORMATION - USD ($)	Oct. 31, 2016	Dec. 13, 2016	Apr. 30, 2016
Document Entity Information [Abstract]
Document Fiscal Period Focus	FY
Document Period End Date	Oct. 31, 2016
Document Fiscal Year Focus	2016
Amendment Flag	false
Entity Well-Known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 3,417,606,000
Document Type	10-K
Entity Information [Line Items]
Entity Registrant Name	HEICO CORPORATION
Entity Address, Address Line One	3000 Taft Street, Hollywood, Florida
Entity Address, State or Province	Florida
Entity Address, Postal Zip Code	33021
City Area Code	954
Local Phone Number	987-4000
Entity Central Index Key	0000046619
Entity Tax Identification Number	650341002
Current Fiscal Year End Date	--10-31
Entity Filer Category	Large Accelerated Filer
Common Class A [Member]
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		40,345,120
Trading Symbol	hei.a
Entity Listing, Par Value Per Share	$ 0.01
Heico Common Stock [Member]
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		26,971,792
Trading Symbol	hei
Entity Listing, Par Value Per Share	$ 0.01

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Oct. 31, 2016	Oct. 31, 2015
Current assets:
Cash and cash equivalents	$ 42,955	$ 33,603
Accounts receivable, net	202,227	181,593
Inventories, net	286,302	243,517
Prepaid expenses and other current assets	11,674	9,369
Deferred income taxes	41,063	35,530
Total current assets	584,221	503,612
Property, plant and equipment, net	121,611	105,670
Goodwill	865,717	766,639
Intangible assets, net	366,863	272,593
Deferred income taxes	407	847
Other assets	100,656	87,026
Total assets	2,039,475	1,736,387
Current liabilities:
Current maturities of long-term debt	411	357
Trade accounts payable	73,335	64,682
Accrued expenses and other current liabilities	136,053	100,155
Income taxes payable	4,622	3,193
Total current liabilities	214,421	168,387
Long-term debt, net of current maturities	457,814	367,241
Deferred income taxes	105,962	110,588
Other long-term liabilities	114,061	105,618
Total liabilities	892,258	751,834
Commitments and contingencies
Redeemable noncontrolling interests	99,512	91,282
Shareholders' equity:
Common Stock	270	269
Capital in excess of par value	306,328	286,220
Deferred compensation obligation	2,460	1,783
HEICO stock held by irrevocable trust	(2,460)	(1,783)
Accumulated other comprehensive (loss) income	(25,326)	(25,080)
Retained earnings	681,704	548,054
Total HEICO shareholders' equity	963,379	809,863
Noncontrolling interests	84,326	83,408
Total shareholders' equity	1,047,705	893,271
Total liabilities and equity	2,039,475	1,736,387
Common Class A [Member]
Shareholders' equity:
Common Stock	$ 403	$ 400

CONSOLIDATED BALANCE SHEETS [PARENTHETICAL] - $ / shares shares in Thousands	Oct. 31, 2016	Oct. 31, 2015
Common stock, par value (in dollar per share)	$ 0.01	$ 0.01
Common stock, shares authorized	75,000	75,000
Common stock, shares issued	26,972	26,906
Common stock, shares outstanding	26,972	26,906
Common Class A [Member]
Common stock, par value (in dollar per share)	$ 0.01	$ 0.01
Common stock, shares authorized	75,000	75,000
Common stock, shares issued	40,317	39,967
Common stock, shares outstanding	40,317	39,967

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Net sales	$ 1,376,258	$ 1,188,648	$ 1,132,311
Operating costs and expenses:
Cost of sales	860,766	754,469	733,999
Selling, general and administrative expenses	250,147	204,523	194,924
Total operating costs and expenses	1,110,913	958,992	928,923
Operating income	265,345	229,656	203,388
Interest expense	(8,272)	(4,626)	(5,441)
Other income	(23)	(66)	625
Income before taxes and noncontrolling interests	257,050	224,964	198,572
Income tax expense	80,900	71,400	59,800
Net income from consolidated operations	176,150	153,564	138,772
Less: Net income attributable to noncontrolling interests	19,958	20,200	17,479
Net income attributable to HEICO	$ 156,192	$ 133,364	$ 121,293
Net income per share attributable to HEICO shareholders:
Basic (in dollars per share)	$ 2.33	$ 2.00	$ 1.82
Diluted (in dollars per share)	$ 2.29	$ 1.97	$ 1.80
Weighted average number of common shares outstanding:
Basic (in shares)	67,045	66,740	66,463
Diluted (in shares)	68,170	67,811	67,453

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Net income from consolidated operations	$ 176,150	$ 153,564	$ 138,772
Other comprehensive (loss) income:
Foreign currency translation adjustments	353	(16,880)	(7,882)
Unrealized (loss) gain on defined benefit pension plan, net of tax	(661)	(771)	(551)
Total other comprehensive (loss) income	(308)	(17,651)	(8,433)
Comprehensive income from consolidated operations	175,842	135,913	130,339
Less: Net income attributable to noncontrolling interests	19,958	20,200	17,479
Less: Foreign currency translation adjustments attributable to noncontrolling interests	(62)	(860)	0
Comprehensive income attributable to noncontrolling interests	19,896	19,340	17,479
Comprehensive income attributable to HEICO	$ 155,946	$ 116,573	$ 112,860

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Redeemable Noncontrolling Interests [Member]	Common Stock [Member]	Common Stock [Member] Common Class A [Member]	Capital in Excess of Par Value [Member]	Deferred Compensation Obligation [Member]	HEICO Stock Held By Irrevocable Trust [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]	Total Shareholders Equity [Member]
Balances at Oct. 31, 2013			$ 268	$ 396	$ 255,889	$ 1,138	$ (1,138)	$ 144	$ 349,649	$ 116,889	$ 723,235
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 112,860							(8,433)	121,293
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	17,479	$ 5,313								12,166
Comprehensive Income (Loss)	130,339										125,026
Cash dividends									(31,215)		(31,215)
Issuance of common stock to HEICO Savings and Investment Plan					5,504						5,504
Share-based compensation expense					7,425						7,426
Proceeds from stock option exercises				1	708						708
Tax benefit from stock option exercises					93						93
Distributions to noncontrolling interests		(5,908)								(73,304)	(73,304)
Reclassification of redeemable noncontrolling interests to noncontrolling interests										19,383	19,383
Adjustments to redemption amount of redeemable noncontrolling interests		1,969							(1,969)		(1,969)
Adjustments to Additional Paid in Capital, Other					(268)
Other									(1)	(1)	(268)
Balances at Oct. 31, 2014			268	397	269,351	1,138	(1,138)	(8,289)	437,757	75,135	774,619
Redeemable noncontrolling interests at Oct. 31, 2013		59,218
Increase (Decrease) in Temporary Equity [Roll Forward]
Comprehensive Income (Loss), Net of Tax, Attributable to Redeemable Noncontrolling Interest	17,479	5,313								12,166
Distributions to noncontrolling interests		(5,908)								(73,304)	(73,304)
Acquisitions of noncontrolling interests		(1,243)
Reclassification of redeemable noncontrolling interests to noncontrolling interests2		(19,383)
Adjustments to redemption amount of redeemable noncontrolling interests		1,969							(1,969)		(1,969)
Redeemable noncontrolling interests at Oct. 31, 2014		39,966
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	116,573							(16,791)	133,364
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	19,340	6,534								12,806
Comprehensive Income (Loss)	135,913										129,379
Cash dividends	(27,200)								(9,343)		(9,343)
Issuance of common stock to HEICO Savings and Investment Plan			1	1	5,752						5,754
Share-based compensation expense					6,048						6,048
Proceeds from stock option exercises				2	3,671						3,673
Tax benefit from stock option exercises					1,402						1,402
Distributions to noncontrolling interests		(5,166)								(4,533)	(4,533)
Adjustments to redemption amount of redeemable noncontrolling interests		13,724							(13,724)		(13,724)
Deferred Compensation Obligation						645
Stock Held During Period Value Deferred Compensation Obligation							(645)
Adjustments to Additional Paid in Capital, Other					(4)
Other											4
Balances at Oct. 31, 2015	893,271		269	400	286,220	1,783	(1,783)	(25,080)	548,054	83,408	893,271
Increase (Decrease) in Temporary Equity [Roll Forward]
Comprehensive Income (Loss), Net of Tax, Attributable to Redeemable Noncontrolling Interest	19,340	6,534								12,806
Distributions to noncontrolling interests		(5,166)								(4,533)	(4,533)
Adjustments to redemption amount of redeemable noncontrolling interests		13,724							(13,724)		(13,724)
Noncontrolling interests assumed related to acquisition		36,224
Redeemable noncontrolling interests at Oct. 31, 2015	91,282	91,282
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	155,946							(246)	156,192
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	19,896	9,968								9,928
Comprehensive Income (Loss)	175,842										165,874
Cash dividends									(10,724)		(10,724)
Issuance of common stock to HEICO Savings and Investment Plan			1	1	6,890						6,892
Share-based compensation expense					6,434						6,434
Proceeds from stock option exercises				2	5,922						5,924
Tax benefit from stock option exercises					868						868
Distributions to noncontrolling interests		(9,957)								(9,060)	(9,060)
Adjustments to redemption amount of redeemable noncontrolling interests		11,818							(11,818)		(11,818)
Deferred Compensation Obligation						677
Stock Held During Period Value Deferred Compensation Obligation							(677)
Adjustments to Additional Paid in Capital, Other					(6)
Other										(50)	(44)
Balances at Oct. 31, 2016	1,047,705		$ 270	$ 403	$ 306,328	$ 2,460	$ (2,460)	$ (25,326)	681,704	84,326	1,047,705
Increase (Decrease) in Temporary Equity [Roll Forward]
Comprehensive Income (Loss), Net of Tax, Attributable to Redeemable Noncontrolling Interest	19,896	9,968								9,928
Distributions to noncontrolling interests		(9,957)								$ (9,060)	(9,060)
Acquisitions of noncontrolling interests		(3,599)
Adjustments to redemption amount of redeemable noncontrolling interests		11,818							$ (11,818)		$ (11,818)
Redeemable noncontrolling interests at Oct. 31, 2016	$ 99,512	$ 99,512

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Operating Activities:
Net income from consolidated operations	$ 176,150	$ 153,564	$ 138,772
Adjustments to reconcile net income from consolidated operations to net cash provided by operating activities:
Depreciation and amortization	60,277	47,907	47,757
Impairment of intangible assets	0	0	15,000
Employer contributions to HEICO Savings and Investment Plan	7,020	6,125	6,302
Share-based compensation expense	6,434	6,048	6,426
Accrued contingent consideration	3,063	293
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Asset			(28,126)
Foreign Currency Transaction Loss, before Tax	13
Foreign Currency Transaction Gain, before Tax		(3,704)
Deferred income tax benefit	(9,194)	(7,080)	(16,745)
Tax benefit from stock option exercises	868	1,402	93
Excess tax benefit from stock option exercises	(881)	(1,402)	(93)
Payment of contingent consideration	631
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	(15,955)	(22,572)	6,999
Inventories	(14,421)	(10,187)	126
Prepaid expenses and other current assets	(2,356)	1,433	8,033
Trade accounts payable	4,074	3,169	2,511
Accrued expenses and other current liabilities	35,279	(883)	(3,090)
Income taxes payable	1,443	373	1,462
Other	(1,999)	(1,623)	5,262
Net cash provided by operating activities	249,184	172,863	190,689
Investing Activities:
Acquisitions, net of cash acquired	(263,811)	(166,784)	(8,737)
Capital expenditures	(30,863)	(18,249)	(16,410)
Other	(2,942)	(973)	(40)
Net cash used in investing activities	(297,616)	(186,006)	(25,187)
Financing Activities:
Borrowings on revolving credit facility	260,000	173,696	112,000
Payments on revolving credit facility	(170,000)	(132,000)	(159,000)
Distributions to noncontrolling interests	(19,017)	(9,699)	(79,212)
Cash dividends paid	(10,724)	(9,343)	(31,215)
Payment of contingent consideration	(6,329)
Acquisitions of noncontrolling interests	(3,599)	0	(1,243)
Proceeds from stock option exercises	5,924	3,673	708
Excess tax benefit from stock option exercises	881	1,402	93
Revolving credit facility issuance costs	0	0	(767)
Other	(364)	(393)	(1,479)
Net cash (used in) provided by financing activities	56,772	27,336	(160,115)
Effect of exchange rate changes on cash	1,012	(819)	(657)
Net increase (decrease) in cash and cash equivalents	9,352	13,374	4,730
Cash and cash equivalents at beginning of year	33,603	20,229	15,499
Cash and cash equivalents at end of year	$ 42,955	$ 33,603	$ 20,229

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

12 Months Ended

Oct. 31, 2016

Summary Of Significant Accounting Policies (Policies) [Abstract]

Significant Accounting Policies [Text Block]

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Nature of Business

HEICO Corporation, through its principal subsidiaries consisting of HEICO Aerospace Holdings Corp. (“HEICO Aerospace”), HEICO Flight Support Corp. and HEICO Electronic Technologies Corp. (“HEICO Electronic”) and their respective subsidiaries (collectively, the “Company”), is principally engaged in the design, manufacture and sale of aerospace, defense and electronic related products and services throughout the United States ("U.S.") and internationally. The Company’s customer base is primarily the aviation, defense, space, medical, telecommunications and electronics industries.

Basis of Presentation

The Company has two operating segments: the Flight Support Group (“FSG”), consisting of HEICO Aerospace and HEICO Flight Support Corp. and their respective subsidiaries; and the Electronic Technologies Group (“ETG”), consisting of HEICO Electronic and its subsidiaries.

The consolidated financial statements include the financial accounts of HEICO Corporation and its subsidiaries, all of which are wholly owned except for HEICO Aerospace, which is 20% owned by Lufthansa Technik AG ("LHT"), the technical services subsidiary of Lufthansa German Airlines. In addition, HEICO Aerospace consolidates two subsidiaries which are 80.1% and 82.3% owned, respectively, and a joint venture, which is 84% owned. Also, HEICO Flight Support Corp. consolidates two subsidiaries which are 80.0% and 84% owned, respectively, three subsidiaries that are each 80.1% owned, and one subsidiary which is 90.1% owned. Furthermore, HEICO Electronic consolidates four subsidiaries, which are 80.1%, 80.1%, 82.5%, and 95.9% owned, respectively, and a wholly owned subsidiary of HEICO Electronic consolidates a subsidiary which is 78% owned. See Note 11, Redeemable Noncontrolling Interests. All intercompany balances and transactions are eliminated.

Use of Estimates and Assumptions

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.

Cash and Cash Equivalents

For purposes of the consolidated financial statements, the Company considers all highly liquid investments such as U.S. Treasury bills and money market funds, without liquidity fees or redemption gates, with an original maturity of three months or less at the time of purchase to be cash equivalents.

Accounts Receivable

Accounts receivable consist of amounts billed and currently due from customers and unbilled costs and estimated earnings related to revenue from certain fixed price contracts recognized on the percentage-of-completion method that have been recognized for accounting purposes, but not yet billed to customers. The valuation of accounts receivable requires that the Company set up an allowance for estimated uncollectible accounts and record a corresponding charge to bad debt expense. The Company estimates uncollectible receivables based on such factors as its prior experience, its appraisal of a customer’s ability to pay, age of receivables outstanding and economic conditions within and outside of the aviation, defense, space, medical, telecommunications and electronics industries.

Concentrations of Credit Risk

Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of temporary cash investments and trade accounts receivable. The Company places its temporary cash investments with high credit quality financial institutions and limits the amount of credit exposure to any one financial institution. Concentrations of credit risk with respect to trade receivables are limited due to the large number of customers comprising the Company’s customer base and their dispersion across many different geographical regions. The Company performs ongoing credit evaluations of its customers, but does not generally require collateral to support customer receivables.

Inventory

Inventory is stated at the lower of cost or market, with cost being determined on the first-in, first-out or the average cost basis. Losses, if any, are recognized fully in the period when identified.

The Company periodically evaluates the carrying value of inventory, giving consideration to factors such as its physical condition, sales patterns and expected future demand in order to estimate the amount necessary to write down any slow moving, obsolete or damaged inventory.

These estimates could vary significantly from actual amounts based upon future economic conditions, customer inventory levels or competitive factors that were not foreseen or did not exist when the estimated write-downs were made. In accordance with industry practice, all inventories are classified as a current asset including portions with long production cycles, some of which may not be realized within one year.

Property, Plant and Equipment

Property, plant and equipment is recorded at cost. Depreciation and amortization is generally provided on the straight-line method over the estimated useful lives of the various assets. The Company’s property, plant and equipment is depreciated over the following estimated useful lives:

The costs of major additions and improvements are capitalized. Leasehold improvements are amortized over the shorter of the leasehold improvement’s useful life or the lease term.

Repairs and maintenance costs are expensed as incurred. Upon an asset's disposition, its cost and related accumulated depreciation are removed from the financial accounts and any resulting gain or loss is reflected within earnings.

Capital Leases

Assets acquired under capital leases are recorded at the lower of the asset's fair value or the present value of the future minimum lease payments, excluding any portion of the lease payments representing executory costs. The discount rate used in determining the present value of the minimum lease payments is the lower of the rate implicit in the lease or the Company's incremental borrowing rate. Assets under capital leases are included in property, plant and equipment and are depreciated over the shorter of the lease term or the useful life of the leased asset. Lease payments under capital leases are recognized as a reduction of the capital lease obligation and as interest expense.

Business Combinations

The Company allocates the purchase price of acquired entities to the underlying tangible and identifiable intangible assets acquired and liabilities and any noncontrolling interests assumed based on their estimated fair values, with any excess recorded as goodwill. The operating results of acquired businesses are included in the Company’s results of operations beginning as of their effective acquisition dates. Acquisition costs are generally expensed as incurred and totaled $3.2 million in fiscal 2016. See note 2, Acquisitions, for additional information regarding fiscal 2016 acquisition costs. Acquisition costs were not material in fiscal 2015 or 2014.

For contingent consideration arrangements, a liability is recognized at fair value as of the acquisition date with subsequent fair value adjustments recorded in operations. Information regarding additional contingent purchase consideration may be found in Note 2, Acquisitions, and Note 7, Fair Value Measurements.

Goodwill and Other Intangible Assets

The Company tests goodwill for impairment annually as of October 31, or more frequently if events or changes in circumstances indicate that the carrying amount of goodwill may not be fully recoverable. In evaluating the recoverability of goodwill, the Company compares the fair value of each of its reporting units to its carrying value to determine potential impairment. If the carrying value of a reporting unit exceeds its fair value, the implied fair value of that reporting unit’s goodwill is to be calculated and an impairment loss is recognized in the amount by which the carrying value of the reporting unit’s goodwill exceeds its implied fair value, if any. The fair values of the Company's reporting units are determined by using a weighted average of a market approach and an income approach. Under the market approach, fair values are estimated using published market multiples for comparable companies. The Company calculates fair values under the income approach by taking estimated future cash flows that are based on internal projections and other assumptions deemed reasonable by management and discounting them using an estimated weighted average cost of capital.

The Company’s intangible assets not subject to amortization consist principally of its trade names. The Company’s intangible assets subject to amortization are amortized on the straight-line method (except for certain customer relationships amortized on an accelerated method) over the following estimated useful lives:



Customer relationships	6	to	15	years
Intellectual property	7	to	22	years
Licenses	10	to	17	years
Patents	5	to	20	years
Trade names	8	to	15	years

Amortization expense of intellectual property, licenses and patents is recorded as a component of cost of sales, and amortization expense of customer relationships, non-compete agreements and trade names is recorded as a component of selling, general and administrative ("SG&A") expenses in the Company’s Consolidated Statements of Operations. The Company tests each non-amortizing intangible asset for impairment annually as of October 31, or more frequently if events or changes in circumstances indicate that the asset might be impaired. To derive the fair value of its trade names, the Company utilizes an income approach, which relies upon management's assumptions of royalty rates, projected revenues and discount rates. The Company also tests each amortizing intangible asset for impairment if events or circumstances indicate that the asset might be impaired. The test consists of determining whether the carrying value of such assets will be recovered through undiscounted expected future cash flows. If the total of the undiscounted future cash flows is less than the carrying amount of those assets, the Company recognizes an impairment loss based on the excess of the carrying amount over the fair value of the assets. The determination of fair value requires management to make a number of estimates, assumptions and judgments of such factors as projected revenues and earnings and discount rates.

Investments

Investments are stated at fair value based on quoted market prices. Investments that are intended to be held for less than one year are included within prepaid expenses and other current assets in the Company’s Consolidated Balance Sheets, while those intended to be held for longer than one year are classified within other assets. Unrealized gains or losses associated with available-for-sale securities are reported net of tax within other comprehensive income or (loss) in shareholders’ equity. Unrealized gains or losses associated with trading securities are recorded as a component of other income in the Company’s Consolidated Statements of Operations.

Customer Rebates and Credits

The Company records accrued customer rebates and credits as a component of accrued expenses and other current liabilities in the Company’s Consolidated Balance Sheets. These amounts generally relate to discounts negotiated with customers as part of certain sales contracts that are usually tied to sales volume thresholds. The Company accrues customer rebates and credits as a reduction within net sales as the revenue is recognized based on the estimated level of discount rate expected to be earned by each customer over the life of the contractual rebate period (generally one year). Accrued customer rebates and credits are monitored by management and discount levels are updated at least quarterly.

Product Warranties

Product warranty liabilities are estimated at the time of shipment and recorded as a component of accrued expenses and other current liabilities in the Company’s Consolidated Balance Sheets. The amount recognized is based on historical claims experience.

Defined Benefit Pension Plan

In connection with a prior year acquisition, the Company assumed a frozen qualified defined benefit pension plan (the "Plan"). The Plan's benefits are based on employee compensation and years of service; however, the accrued benefit for Plan participants was fixed as of the date of acquisition. The Company uses an actuarial valuation to determine the projected benefit obligation of the Plan and records the difference between the fair value of the Plan's assets and the projected benefit obligation as of October 31 in its Consolidated Balance Sheets. Additionally, any actuarial gain or loss that arises during a fiscal year that is not recognized as a component of net periodic pension income or expense is recorded as a component of other comprehensive income or (loss), net of tax. See Note 10, Employee Retirement Plans, for additional information and disclosures about the Plan.

Revenue Recognition

Revenue from the sale of products and the rendering of services is recognized when title and risk of loss passes to the customer, which is generally at the time of shipment. Revenue from the rendering of services represented less than 10% of consolidated net sales for all periods presented. Revenue from certain fixed price contracts for which costs can be dependably estimated is recognized on the percentage-of-completion method, measured by the percentage of costs incurred to date to estimated total costs for each contract. The percentage of the Company’s net sales recognized under the percentage-of-completion method was approximately 3%, 4% and 3% in fiscal 2016, 2015 and 2014, respectively. Contract costs include all direct material and labor costs and those indirect costs related to contract performance, such as indirect labor, supplies, tools, repairs and depreciation costs. Selling, general and administrative costs are charged to expense as incurred.

Revisions in cost estimates as contracts progress have the effect of increasing or decreasing profits in the period of revision. Provisions for estimated losses on uncompleted contracts are made in the period in which such losses are determined. Variations in actual labor performance, changes to estimated profitability, and final contract settlements may result in revisions to cost estimates and are recognized in income in the period in which the revisions are determined. Changes in estimates pertaining to percentage-of-completion contracts did not have a material effect on net income from consolidated operations in fiscal 2016, 2015 or 2014.

The asset, “costs and estimated earnings in excess of billings” on uncompleted percentage-of-completion contracts, included in accounts receivable, represents revenue recognized in excess of amounts billed. The liability, “billings in excess of costs and estimated earnings,” included in accrued expenses and other current liabilities, represents billings in excess of revenue recognized on contracts accounted for under the percentage-of-completion method.

Billings are made based on the completion of certain milestones as provided for in the contracts.

For fixed price contracts in which costs cannot be dependably estimated, revenue is recognized on the completed-contract method. A contract is considered complete when all significant costs have been incurred or the item has been accepted by the customer. Progress billings and customer advances (“billings to date”) received on fixed price contracts accounted for under the completed-contract method are classified as a reduction to contracts in process (a component of inventories), if any, and any remaining amount is included in accrued expenses and other current liabilities.

Stock-Based Compensation

The Company records compensation expense associated with stock options in its Consolidated Statements of Operations based on the grant date fair value of those awards. The fair value of each stock option on the date of grant is estimated using the Black-Scholes pricing model based on certain valuation assumptions. Expected stock price volatility is based on the Company’s historical stock prices over the contractual term of the option grant and other factors. The risk-free interest rate used is based on the published U.S. Treasury yield curve in effect at the time of the option grant for instruments with a similar life. The dividend yield reflects the Company’s expected dividend yield at the date of grant. The expected option life represents the period of time that the stock options are expected to be outstanding, taking into consideration the contractual term of the option grant and employee historical exercise behavior. The Company generally recognizes stock option compensation expense ratably over the award’s vesting period.

Income Taxes

Income tax expense includes U.S. and foreign income taxes, plus a provision for U.S. taxes on undistributed earnings of foreign subsidiaries not deemed to be permanently invested. Deferred income taxes are provided on elements of income that are recognized for financial accounting purposes in periods different from periods recognized for income tax purposes. The Company’s policy is to recognize interest and penalties related to income tax matters as a component of income tax expense. Further information regarding income taxes can be found in Note 6, Income Taxes.

Redeemable Noncontrolling Interests

As further detailed in Note 11, Redeemable Noncontrolling Interests, the holders of equity interests in certain of the Company’s subsidiaries have rights (“Put Rights”) that require the Company to provide cash consideration for their equity interests (the “Redemption Amount”) at fair value or at a formula that management intended to reasonably approximate fair value based solely on a multiple of future earnings over a measurement period. The Put Rights are embedded in the shares owned by the noncontrolling interest holders and are not freestanding.

The Company tracks the carrying cost of such redeemable noncontrolling interests at historical cost plus an allocation of subsidiary earnings based on ownership interest, less dividends paid to the noncontrolling interest holders. Redeemable noncontrolling interests are recorded outside of permanent equity at the higher of their carrying cost or management’s estimate of the Redemption Amount. The initial adjustment to record redeemable noncontrolling interests at the Redemption Amount results in a corresponding decrease to retained earnings. Subsequent adjustments to the Redemption Amount of redeemable noncontrolling interests may result in corresponding decreases or increases to retained earnings, provided any increases to retained earnings may only be recorded to the extent of decreases previously recorded. Adjustments to Redemption Amounts based on fair value will have no effect on net income per share attributable to HEICO shareholders whereas the portion of periodic adjustments to the carrying amount of redeemable noncontrolling interests based solely on a multiple of future earnings that reflect a redemption amount in excess of fair value will affect net income per share attributable to HEICO shareholders. Acquisitions of redeemable noncontrolling interests are treated as equity transactions.

Net Income per Share Attributable to HEICO Shareholders

Basic net income per share attributable to HEICO shareholders is computed by dividing net income attributable to HEICO by the weighted average number of common shares outstanding during the period. Diluted net income per share attributable to HEICO shareholders is computed by dividing net income attributable to HEICO by the weighted average number of common shares outstanding during the period plus potentially dilutive common shares arising from the assumed exercise of stock options, if dilutive. The dilutive impact of potentially dilutive common shares is determined by applying the treasury stock method.

Foreign Currency

All assets and liabilities of foreign subsidiaries that do not utilize the U.S. dollar as its functional currency are translated at period-end exchange rates, while revenue and expenses are translated using average exchange rates for the period. Unrealized translation gains or losses are reported as foreign currency translation adjustments through other comprehensive income or (loss) in shareholders’ equity. Transaction gains or losses related to balances denominated in a currency other than the functional currency are recorded in the Company's Consolidated Statements of Operations.

Contingencies

Losses for contingencies such as product warranties, litigation and environmental matters are recognized in income when they are probable and can be reasonably estimated. Gain contingencies are not recognized in income until they have been realized.

New Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, "Revenue from Contracts with Customers," which provides a comprehensive new revenue recognition model that will supersede nearly all existing revenue recognition guidance. Under ASU 2014-09, an entity will recognize revenue when it transfers promised goods or services to a customer at an amount that reflects the consideration it expects to receive in exchange for those goods or services. The guidance also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts. ASU 2014-09, as amended, is effective for fiscal years and interim reporting periods within those years beginning after December 15, 2017, or in fiscal 2019 for HEICO. Early adoption in the year preceding the effective date is permitted. ASU 2014-09 shall be applied either retrospectively to each prior reporting period presented or retrospectively with the cumulative effect of initially applying ASU 2014-09 recognized at the date of initial application. The Company is currently evaluating which transition method it will elect and the effect the adoption of this guidance will have on its consolidated results of operations, financial position and cash flows.

In July 2015, the FASB issued ASU 2015-11, "Simplifying the Measurement of Inventory," which requires entities to measure inventories at the lower of cost or net realizable value. Under current guidance, inventories are measured at the lower of cost or market. ASU 2015-11 must be applied prospectively and is effective for fiscal years and interim reporting periods within those years beginning after December 15, 2016, or in fiscal 2018 for HEICO. Early adoption is permitted. The Company is currently evaluating the effect, if any, the adoption of this guidance will have on its consolidated results of operations, financial position and cash flows.

In November 2015, the FASB issued ASU 2015-17, "Balance Sheet Classification of Deferred Taxes," which requires that all deferred tax assets and liabilities be classified as noncurrent in the balance sheet. ASU 2015-17 may be applied either prospectively or retrospectively and is effective for fiscal years and interim reporting periods within those years beginning after December 15, 2016, or in fiscal 2018 for HEICO. Early adoption is permitted. The Company is currently evaluating which transition method it will elect. The adoption of this guidance will only effect the presentation of deferred taxes in the Company's consolidated statement of financial position.

In February 2016, the FASB issued ASU 2016-02, "Leases," which requires recognition of lease assets and lease liabilities on the balance sheet of lessees. ASU 2016-02 is effective for fiscal years and interim reporting periods within those years beginning after December 15, 2018, or in fiscal 2020 for HEICO. Early adoption is permitted. ASU 2016-02 requires a modified retrospective transition approach and provides certain optional transition relief. The Company is currently evaluating the effect the adoption of this guidance will have on its consolidated results of operations, financial position and cash flows.

In March 2016, the FASB issued ASU 2016-09, "Improvements to Employee Share-Based Payment Accounting," which simplifies several aspects related to accounting for share-based payment transactions. Under ASU 2016-09, all excess tax benefits and tax deficiencies are to be recognized in the statement of operations as a component of income tax expense rather than as capital in excess of par value, and the tax effects will be presented within the statement of cash flows as an operating cash flow rather than as a financing activity. ASU 2016-09 is effective for fiscal years and interim reporting periods within those years beginning after December 15, 2016, or in fiscal 2018 for HEICO. Early adoption is permitted. The recognition of the tax effects in the statement of operations, as well as related changes to the computation of diluted earnings per share are to be applied prospectively and entities may elect to apply the change in the presentation of the statement of cash flows either prospectively or retrospectively. The Company is currently evaluating the effect the adoption of this guidance will have on its consolidated results of operations, financial position and cash flows.

In August 2016, the FASB issued ASU 2016-15, "Classification of Certain Cash Receipts and Cash Payments," which clarifies how certain cash receipts and cash payments are to be presented and classified in the statement of cash flows. ASU 2016-15 provides guidance on eight specific cash flow classification issues including contingent consideration payments made after a business combination, proceeds from corporate-owned life insurance policies and distributions received from equity method investees. ASU 2016-15 is effective for fiscal years and interim reporting periods within those years beginning after December 15, 2017, or in fiscal 2019 for HEICO. Early adoption is permitted. ASU 2016-15 requires a retrospective transition approach for all periods presented. The Company is currently evaluating the effect the adoption of this guidance will have on its consolidated statement of cash flows.

ACQUISITIONS

12 Months Ended

Oct. 31, 2016

Acquisitions [Abstract]

Business Combination Disclosure [Text Block]

ACQUISITIONS

Robertson Acquisition

On January 11, 2016, the Company, through HEICO Electronic, acquired all of the limited liability company interests of Robertson Fuel Systems, LLC ("Robertson"). The purchase price of this acquisition was paid in cash using proceeds from the Company’s revolving credit facility. Robertson designs and produces mission-extending, crashworthy and ballistically self-sealing auxiliary fuel systems for military rotorcraft. The Company believes that this acquisition is consistent with HEICO’s practice of acquiring outstanding niche designers and manufacturers of critical components in the defense industry and will further enable the Company to broaden its product offerings, technologies and customer base.

The following table summarizes the total consideration for the acquisition of Robertson (in thousands):



Cash paid		$256,293
Less: cash acquired	(3,271		)
Total consideration		$253,022

The following table summarizes the allocation of the total consideration for the acquisition of Robertson to the estimated fair values of the tangible and identifiable intangible assets acquired and liabilities assumed (in thousands):



Assets acquired:
Goodwill		$93,425
Customer relationships	55,100
Intellectual property	39,600
Trade name	28,400
Inventories	27,417
Property, plant and equipment	7,476
Accounts receivable	4,973
Other assets	1,884
Total assets acquired, excluding cash	258,275

Liabilities assumed:
Accounts payable	4,606
Accrued expenses	647
Total liabilities assumed	5,253
Net assets acquired, excluding cash		$253,022

The allocation of the total consideration to the tangible and identifiable intangible assets acquired and liabilities assumed is preliminary until the Company obtains final information regarding their fair values. However, the Company does not expect any adjustments to such allocations to be material to the Company's consolidated financial statements. The primary items that generated the goodwill recognized were the premiums paid by the Company for the future earnings potential of Robertson and the value of its assembled workforce that do not qualify for separate recognition. The amortization period of the customer relationships, intellectual property and trade name acquired is 15 years, 22 years and indefinite, respectively. Acquisition costs associated with the purchase of Robertson totaled $3.1 million for fiscal year ended October 31, 2016 and were recorded as a component of SG&A expenses in the Company's Consolidated Statements of Operations. The operating results of Robertson were included in the Company’s results of operations from the effective acquisition date. The Company's consolidated net sales and net income attributable to HEICO for the fiscal year ended October 31, 2016 includes approximately $84.1 million and $12.3 million, respectively, from the acquisition of Robertson, exclusive of the aforementioned acquisition costs. The purchase price of this acquisition was paid in cash using proceeds from the Company's revolving credit facility.

The following table presents unaudited pro forma financial information for fiscal 2015 as if the acquisition of Robertson had occurred as of November 1, 2014 (in thousands):



	Year ended October 31, 2015
Net sales		$1,275,926
Net income from consolidated operations		$162,645
Net income attributable to HEICO		$142,445
Net income per share attributable to HEICO shareholders:
Basic		$2.13
Diluted		$2.10

The pro forma financial information is presented for comparative purposes only and is not necessarily indicative of the results of operations that actually would have been achieved if the acquisition had taken place as of November 1, 2014. The unaudited pro forma financial information includes adjustments to historical amounts such as additional amortization expense related to intangible assets acquired, increased interest expense associated with borrowing to finance the acquisition, the reclassification of acquisition costs associated with the purchase of Robertson from fiscal 2016 to fiscal 2015, and inventory purchase accounting adjustments charged to cost of sales as the inventory is sold. Had the acquisition been consummated as of November 1, 2014, net sales, net income from consolidated operations, net income attributable to HEICO, and basic and diluted net income per share attributable to HEICO shareholders on a pro forma basis for fiscal 2016 would not have been materially different than the reported amounts.

Other Acquisitions

In December 2015, the Company, through a subsidiary of HEICO Electronic, acquired certain assets of a company that designs and manufactures underwater locator beacons used to locate aircraft cockpit voice recorders, flight data recorders, marine ship voyage recorders and other devices which have been submerged under water. The total consideration includes an accrual of $1.2 million representing the estimated fair value of contingent consideration the Company may be obligated to pay in aggregate during the first five years following the acquisition. The maximum amount of contingent consideration that the Company could be required to pay is $2.0 million. See Note 7, Fair Value Measurements, for additional information regarding the Company's contingent consideration obligation. The purchase price of this acquisition was paid using cash provided by operating activities.

In August 2015, the Company, through HEICO Flight Support Corp., acquired all of the stock of Astroseal Products Mfg. Corporation (“Astroseal”). Astroseal manufactures expanded foil mesh, which is integrated into composite aerospace structures for lighting strike protection in fixed and rotary wing aircraft.

In August 2015, the Company, through HEICO Electronic, acquired 80.1% of the equity of Midwest Microwave Solutions, Inc. (“MMS”). MMS designs, manufactures and sells unique Size, Weight, Power and Cost (SWAP-C) optimized Communications and Electronic Intercept Receivers and Tuners for military and intelligence applications. The remaining 19.9% continues to be owned by certain members of MMS’ management team (see Note 11, Redeemable Noncontrolling Interests, for additional information).

In August 2015, the Company, through HEICO Flight Support Corp., acquired 80.1% of the assets and assumed certain liabilities of Aerospace & Commercial Technologies, LLC (“ACT”). ACT is a provider of products and services necessary to maintain up-to-date F-16 fighter aircraft operational capabilities. The remaining 19.9% continues to be owned by certain members of ACT’s management team (see Note 11, Redeemable Noncontrolling Interests, for additional information).

In May 2015, the Company, through a subsidiary of HEICO Flight Support Corp., acquired all of the stock of Thermal Energy Products, Inc. (“TEP”). TEP engineers, designs and manufactures removable/reusable insulation systems for industrial, commercial, aerospace and defense applications.

In January 2015, the Company, through HEICO Flight Support Corp., acquired 80.1% of the equity of Harter Aerospace, LLC ("Harter"). Harter is a globally recognized component and accessory maintenance, repair, and overhaul (MRO) station specializing in commercial aircraft accessories, including thrust reverse actuation systems and pneumatics, and electromechanical components. The remaining 19.9% interest continues to be owned by certain members of Harter's management team (see Note 11, Redeemable Noncontrolling Interests, for additional information).

In January 2015, the Company, through HEICO Flight Support Corp., acquired 80% of the equity of Aeroworks International Holding B.V. (“Aeroworks”). Aeroworks, which is headquartered in the Netherlands and maintains a significant portion of its production facilities in Thailand and Laos, is a manufacturer of both composite and metal parts used primarily in aircraft interior applications, including seating, galleys, lavatories, doors, and overhead bins. The remaining 20% interest continues to be owned by a certain member of Aeroworks' management team (see Note 11, Redeemable Noncontrolling Interests, for additional information). The total consideration includes an accrual representing the estimated fair value of contingent consideration that the Company may be obligated to pay should Aeroworks meet certain earnings objectives during each of the first four years following the acquisition. See Note 7, Fair Value Measurements, for additional information regarding the Company’s contingent consideration obligation.

In June 2014, the Company created a new legal entity, Seal Q Corp., within HEICO Flight Support Corp., which acquired certain assets and liabilities of Quest Aviation Supply, Inc. (“Quest Aviation”). Quest Aviation is a niche supplier of parts to repair thrust reversers on various aircraft engines.

Unless otherwise noted, the purchase price of each of the above referenced other acquisitions was paid in cash principally using proceeds from the Company's revolving credit facility and is not material or significant to the Company's consolidated financial statements.

The following table summarizes the aggregate total consideration for the Company's other acquisitions (in thousands):



	Year ended October 31,
	2016		2015			2014
Cash paid		$11,000		$171,829			$6,759
Less: cash acquired	—		(5,062		)	—
Cash paid, net	11,000		166,767			6,759
Contingent purchase consideration	1,225		21,355			—
Additional purchase consideration	—		(211		)	(56		)
Total consideration		$12,225		$187,911			$6,703

The following table summarizes the allocation of the aggregate total consideration for the Company's other acquisitions to the estimated fair values of the tangible and identifiable intangible assets acquired and liabilities and noncontrolling interests assumed (in thousands):



	Year ended October 31,
	2016		2015		2014
Assets acquired:
Identifiable intangible assets		$5,100		$102,981		$3,400
Goodwill	6,876		88,602		2,552
Inventories	249		18,055		247
Property, plant and equipment	—		16,031		248
Accounts receivable	—		10,719		256
Other assets	—		2,571		12
Total assets acquired, excluding cash	12,225		238,959		6,715

Liabilities assumed:
Deferred income taxes	—		6,788		—
Accounts payable	—		4,845		—
Accrued expenses	—		2,570		12
Other liabilities	—		621		—
Total liabilities assumed	—		14,824		12

Noncontrolling interests in consolidated subsidiaries	—		36,224		—

Net assets acquired, excluding cash		$12,225		$187,911		$6,703

During fiscal 2016, the Company recorded certain immaterial measurement period adjustments to the allocation of the total consideration for its fiscal 2015 acquisitions, which are reflected in the table above. The primary items that generated the goodwill recognized were the premiums paid by the Company for the future earnings potential of the businesses acquired and the value of their assembled workforces that do not qualify for separate recognition, which, in the case of MMS, ACT, Harter and Aeroworks benefit both the Company and the noncontrolling interest holders. The fair value of the noncontrolling interests in MMS, ACT, Harter and Aeroworks was determined based on the consideration paid by the Company for its controlling ownership interest adjusted for a lack of control that a market participant would consider when estimating the fair value of the noncontrolling interest.

The operating results of the Company's fiscal 2016 acquisition were included in the Company's results of operations from the effective acquisition date. The amount of net sales and earnings of the Company's fiscal 2016 acquisition included in the Consolidated Statement of Operations is not material. Had the fiscal 2016 acquisition been consummated as of November 1, 2014, net sales, net income from consolidated operations, net income attributable to HEICO, and basic and diluted net income per share attributable to HEICO shareholders on a pro forma basis for fiscal 2016 and 2015 would not have been materially different than the reported amounts.

The operating results of the Company’s fiscal 2015 acquisitions were included in the Company’s results of operations from each of the effective acquisition dates. The Company’s consolidated net sales and net income attributable to HEICO for fiscal 2015 includes approximately $62.9 million and $7.9 million, respectively, from the fiscal 2015 acquisitions.

The following table presents unaudited pro forma financial information for fiscal 2015 and fiscal 2014 as if the Company's fiscal 2015 acquisitions had occurred as of November 1, 2013 (in thousands):



	Year ended October 31,
	2015		2014
Net sales		$1,244,911		$1,228,987
Net income from consolidated operations		$163,012		$150,412
Net income attributable to HEICO		$140,771		$130,539
Net income per share attributable to HEICO shareholders:
Basic		$2.11		$1.96
Diluted		$2.08		$1.94

Additional Purchase Consideration

During fiscal 2014, the Company made additional purchase consideration payments in cash of $2.0 million in aggregate pursuant to the terms of the purchase agreements related to certain prior year acquisitions.

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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+ Details

SELECTED FINANCIAL STATEMENT INFORMATION

12 Months Ended

Oct. 31, 2016

Selected Financial Statement Information [Abstract]

Additional Financial Information Disclosure [Text Block]

SELECTED FINANCIAL STATEMENT INFORMATION

Accounts Receivable



	As of October 31,
(in thousands)	2016			2015
Accounts receivable		$205,386			$183,631
Less: Allowance for doubtful accounts	(3,159		)	(2,038		)
Accounts receivable, net		$202,227			$181,593

Costs and Estimated Earnings on Uncompleted Percentage-of-Completion Contracts



	As of October 31,
(in thousands)	2016			2015
Costs incurred on uncompleted contracts		$19,086			$22,645
Estimated earnings	13,887			16,116
	32,973			38,761
Less: Billings to date	(39,142		)	(36,442		)
		($6,169	)		$2,319
Included in the accompanying Consolidated Balance Sheets under the following captions:
Accounts receivable, net (costs and estimated earnings in excess of billings)		$4,839			$6,263
Accrued expenses and other current liabilities (billings in excess of costs and estimated earnings)	(11,008		)	(3,944		)
		($6,169	)		$2,319

Changes in estimates pertaining to percentage-of-completion contracts did not have a material effect on net income from consolidated operations in fiscal 2016, 2015 or 2014.

Inventories



	As of October 31,
(in thousands)	2016			2015
Finished products		$131,008			$119,262
Work in process	36,076			32,201
Materials, parts, assemblies and supplies	117,153			89,739
Contracts in process	3,253			4,521
Less: Billings to date	(1,188		)	(2,206		)
Inventories, net of valuation reserves		$286,302			$243,517

Contracts in process represents accumulated capitalized costs associated with fixed price contracts. Related progress billings and customer advances (“billings to date”) are classified as a reduction to contracts in process, if any, and any excess is included in accrued expenses and other liabilities.

Property, Plant and Equipment



	As of October 31,
(in thousands)	2016			2015
Land		$5,090			$5,060
Buildings and improvements	79,205			70,626
Machinery, equipment and tooling	171,717			152,022
Construction in progress	10,453			4,668
	266,465			232,376
Less: Accumulated depreciation and amortization	(144,854		)	(126,706		)
Property, plant and equipment, net		$121,611			$105,670

The amounts set forth above include tooling costs having a net book value of $7.7 million and $6.5 million as of October 31, 2016 and 2015, respectively. Amortization expense on capitalized tooling was $2.9 million, $2.4 million and $2.4 million in fiscal 2016, 2015 and 2014, respectively.

The amounts set forth above also include $4.8 million and $3.7 million of assets under capital leases as of October 31, 2016 and October 31, 2015, respectively. Accumulated depreciation associated with the assets under capital leases was $.9 million and $.7 million as of October 31, 2016 and October 31, 2015, respectively. See Note 5, Long-Term Debt, for additional information pertaining to these capital lease obligations.

Depreciation and amortization expense, exclusive of tooling, on property, plant and equipment was $20.4 million, $17.8 million and $17.1 million in fiscal 2016, 2015 and 2014, respectively.

Accrued Expenses and Other Current Liabilities



	As of October 31,
(in thousands)	2016		2015
Accrued employee compensation and related payroll taxes		$67,660		$53,238
Deferred revenue	32,135		16,498
Accrued customer rebates and credits	11,881		8,072
Accrued additional purchase consideration	6,918		6,859
Other	17,459		15,488
Accrued expenses and other current liabilities		$136,053		$100,155

The increase in accrued employee compensation and related payroll taxes principally reflects a higher level of accrued performance-based compensation based on the improved consolidated operating results. The increase in deferred revenue is primarily attributed to billings in excess of costs and estimated earnings on a fixed price contract for which revenue is being recognized on the percentage-of-completion method and customer deposits received in connection with a contract to provided repair and overhaul services. The total customer rebates and credits deducted within net sales in fiscal 2016, 2015 and 2014 was $10.8 million, $4.7 million and $8.3 million, respectively. The increase in total customer rebates and credits deducted within net sales in fiscal 2016 and the amount of accrued customer rebates and credits principally reflects an increase in the net sales volume of certain customers eligible for rebates.

Other Long-Term Assets and Liabilities

The Company provides eligible employees, officers and directors of the Company the opportunity to voluntarily defer base salary, bonus payments, commissions, long-term incentive awards and directors fees, as applicable, on a pre-tax basis through the HEICO Corporation Leadership Compensation Plan (“LCP”), a nonqualified deferred compensation plan that conforms to Section 409A of the Internal Revenue Code. The Company matches 50% of the first 6% of base salary deferred by each participant. Director fees that would otherwise be payable in Company common stock may be deferred into the LCP, and, when distributable, are distributed in actual shares of Company common stock. The LCP does not provide for diversification of a director’s assets allocated to Company common stock. The deferred compensation obligation associated with Company common stock is recorded as a component of shareholders’ equity at cost and subsequent changes in fair value are not reflected in operations or shareholders’ equity of the Company. Further, while the Company has no obligation to do so, the LCP also provides the Company the opportunity to make discretionary contributions. The Company’s matching contributions and any discretionary contributions are subject to vesting and forfeiture provisions set forth in the LCP. Company contributions to the LCP charged to income in fiscal 2016, 2015 and 2014 totaled $6.8 million, $5.7 million and $5.3 million, respectively. The aggregate liabilities of the LCP were $87.9 million and $76.2 million as of October 31, 2016 and 2015, respectively, and are classified within other long-term liabilities in the Company’s Consolidated Balance Sheets. The assets of the LCP, totaling $88.5 million and $77.1 million as of October 31, 2016 and 2015, respectively, are classified within other assets and principally represent cash surrender values of life insurance policies that are held within an irrevocable trust that may be used to satisfy the obligations under the LCP.

Other long-term liabilities also includes deferred compensation of $4.7 million and $4.5 million as of October 31, 2016 and 2015, respectively, principally related to elective deferrals of salary and bonuses under a Company sponsored non-qualified deferred compensation plan formerly available to selected employees. The Company makes no contributions to this plan. The assets of this plan, which equaled the deferred compensation liability as of October 31, 2016 and 2015, respectively, are held within an irrevocable trust and classified within other assets in the Company’s Consolidated Balance Sheets. Additional information regarding the assets of this deferred compensation plan and the LCP may be found in Note 7, Fair Value Measurements.

Research and Development Expenses

The amount of new product research and development ("R&D") expenses included in cost of sales is as follows (in thousands):



	Year ended October 31,
	2016		2015		2014
R&D expenses		$44,726		$38,747		$37,377

Accumulated Other Comprehensive Loss

Changes in the components of accumulated other comprehensive loss during fiscal 2016 and 2015 are as follows (in thousands):



	Foreign Currency Translation			Pension Benefit Obligation			Accumulated Other Comprehensive Loss
Balances as of October 31, 2014		($8,348	)		$59			($8,289	)
Unrealized loss	(16,020		)	(771		)	(16,791		)
Balances as of October 31, 2015	(24,368		)	(712		)	(25,080		)
Unrealized gain (loss)	415			(661		)	(246		)
Balances as of October 31, 2016		($23,953	)		($1,373	)		($25,326	)

GOODWILL AND OTHER INTANGIBLE ASSETS

12 Months Ended

Oct. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets Disclosure [Text Block]

GOODWILL AND OTHER INTANGIBLE ASSETS

Changes in the carrying amount of goodwill during fiscal 2016 and 2015 by operating segment are as follows (in thousands):



	Segment						Consolidated
	FSG			ETG			Totals
Balances as of October 31, 2014		$282,407			$403,864			$686,271
Goodwill acquired	56,441			32,703			89,144
Foreign currency translation adjustments	(1,341		)	(7,435		)	(8,776		)
Balances as of October 31, 2015	337,507			429,132			766,639
Goodwill acquired	—			100,301			100,301
Foreign currency translation adjustments	(256		)	(425		)	(681		)
Adjustments to goodwill	(570		)	28			(542		)
Balances as of October 31, 2016		$336,681			$529,036			$865,717

The goodwill acquired during fiscal 2016 and 2015 relates to the acquisitions consummated in those respective years as described in Note 2, Acquisitions, and represents the residual value after the allocation of the total consideration to the tangible and identifiable intangible assets acquired and liabilities and noncontrolling interests assumed. Foreign currency translation adjustments reflect unrealized translation losses on the goodwill recognized in connection with the acquisition of foreign subsidiaries and are included in other comprehensive income (loss) in the Company's Consolidated Statements of Comprehensive Income. The adjustments to goodwill represent immaterial measurement period adjustments to the purchase price allocation of certain fiscal 2015 acquisitions. The Company estimates that all of the goodwill acquired in fiscal 2016 and approximately $60 million of the goodwill acquired in fiscal 2015 is deductible for income tax purposes. Based on the annual test for goodwill impairment as of October 31, 2016, the Company determined there is no impairment of its goodwill and the fair value of each of the Company’s reporting units significantly exceeded their carrying value.

Identifiable intangible assets consist of the following (in thousands):



	As of October 31, 2016							As of October 31, 2015
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Amortizing Assets:
Customer relationships		$248,271		($88,829	)		$159,442		$190,450		($63,461	)		$126,989
Intellectual property	139,817		(33,291		)	106,526		98,143		(22,912		)	75,231
Licenses	6,559		(2,325		)	4,234		4,200		(1,882		)	2,318
Non-compete agreements	811		(811		)	—		914		(914		)	—
Patents	779		(480		)	299		746		(447		)	299
Trade names	466		(77		)	389		166		(38		)	128
	396,703		(125,813		)	270,890		294,619		(89,654		)	204,965
Non-Amortizing Assets:
Trade names	95,973		—			95,973		67,628		—			67,628
		$492,676		($125,813	)		$366,863		$362,247		($89,654	)		$272,593

The increase in the gross carrying amount of customer relationships, intellectual property, and amortizing and non-amortizing trade names as of October 31, 2016 compared to October 31, 2015 principally relates to such intangible assets recognized in connection with the fiscal 2016 acquisitions (See Note 2, Acquisitions).

Amortization expense related to intangible assets was $36.4 million, $27.0 million and $27.7 million in fiscal 2016, 2015 and 2014, respectively. Amortization expense for each of the next five fiscal years and thereafter is estimated to be $36.6 million in fiscal 2017, $34.6 million in fiscal 2018, $32.4 million in fiscal 2019, $29.8 million in fiscal 2020, $27.2 million in fiscal 2021 and $110.3 million thereafter.

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

LONG-TERM DEBT

12 Months Ended

Oct. 31, 2016

Debt Disclosure [Abstract]

Long-term Debt [Text Block]

LONG-TERM DEBT

Long-term debt consists of the following (in thousands):



	As of October 31,
	2016			2015
Borrowings under revolving credit facility		$455,083			$365,203
Capital leases	3,142			2,395
	458,225			367,598
Less: Current maturities of long-term debt	(411		)	(357		)
		$457,814			$367,241

The Company's borrowings under its revolving credit facility mature in fiscal 2019. As of October 31, 2016 and 2015, the weighted average interest rate on borrowings under the Company's revolving credit facility was 1.6% and 1.3%, respectively. The revolving credit facility contains both financial and non-financial covenants. As of October 31, 2016, the Company was in compliance with all such covenants.

During fiscal 2015, the Company elected to borrow €32 million under its revolving credit facility, which allows for borrowings made in foreign currencies up to a $50 million sublimit. The funds were used to facilitate a fiscal 2015 acquisition. As of October 31, 2016, the U.S. dollar equivalent of the Company's Euro borrowing was $35.1 million.

Capital Lease Obligations

A subsidiary of HEICO Electronic is a party to a capital lease for a manufacturing facility and related property in France. The lease contains a bargain purchase option and has a twelve-year term, which began in fiscal 2011. Additionally, the subsidiary is a party to certain capital leases, principally for office equipment, with lease terms of approximately five years. Furthermore, a subsidiary of HEICO Flight Support Corp. entered into a ten-year capital lease for a manufacturing facility during fiscal 2016. The estimated future minimum lease payments of all capital leases for the next five fiscal years and thereafter are as follows (in thousands):



Year ending October 31,
2017		$554
2018	537
2019	538
2020	501
2021	497
Thereafter	1,107
Total minimum lease payments	3,734
Less: amount representing interest	(592		)
Present value of minimum lease payments		$3,142

Revolving Credit Facility

In December 2011, the Company entered into a $670 million Revolving Credit Agreement (“Credit Facility”) with a bank syndicate. The Credit Facility may be used for working capital and general corporate needs of the Company, including capital expenditures and to finance acquisitions. In November 2013, the Company entered into an amendment to extend the maturity date of the Credit Facility by one year to December 2018 and to increase the aggregate principal amount to $800 million. Furthermore, the amendment includes a feature that will allow the Company to increase the aggregate principal amount by an additional $200 million to become a $1.0 billion facility through increased commitments from existing lenders or the addition of new lenders.

Advances under the Credit Facility accrue interest at the Company’s choice of the “Base Rate” or the London Interbank Offered Rate (“LIBOR”) plus the applicable margin (based on the Company’s ratio of total funded debt to earnings before interest, taxes, depreciation and amortization, noncontrolling interests and non-cash charges, or “leverage ratio”). The Base Rate is the highest of (i) the Prime Rate; (ii) the Federal Funds rate plus .50% per annum; and (iii) the Adjusted LIBO Rate determined on a daily basis for an Interest Period of one month plus 1.00% per annum, as such capitalized terms are defined in the Credit Facility. The applicable margin for a LIBOR-based borrowing ranges from .75% to 2.25%. The applicable margin for a Base Rate borrowing ranges from 0% to 1.25%. A fee is charged on the amount of the unused commitment ranging from .125% to .35% (depending on the Company’s leverage ratio). The Credit Facility also includes a $50 million sublimit for borrowings made in foreign currencies, letters of credit and swingline borrowings. Outstanding principal, accrued and unpaid interest and other amounts payable under the Credit Facility may be accelerated upon an event of default, as such events are described in the Credit Facility. The Credit Facility is unsecured and contains covenants that restrict the amount of certain payments, including dividends, and require, among other things, the maintenance of a total leverage ratio, a senior leverage ratio and a fixed charge coverage ratio. In the event the Company’s leverage ratio exceeds a specified level, the Credit Facility would become secured by the capital stock owned in substantially all of the Company’s subsidiaries.

INCOME TAXES

12 Months Ended

Oct. 31, 2016

Income Tax Disclosure [Abstract]

Income Tax Disclosure [Text Block]

INCOME TAXES

The components of income before income taxes and noncontrolling interests are as follows (in thousands):



	Year ended October 31,
	2016		2015		2014
Domestic		$227,927		$206,612		$185,842
Foreign	29,123		18,352		12,730
Income before taxes and noncontrolling interests		$257,050		$224,964		$198,572

The components of the provision for income taxes on income before income taxes and noncontrolling interests are as follows (in thousands):



	Year ended October 31,
	2016			2015			2014
Current:
Federal		$75,261			$65,857			$63,264
State	7,463			8,559			10,145
Foreign	7,370			4,064			3,136
	90,094			78,480			76,545
Deferred:
Federal	(5,979		)	(4,459		)	(14,000		)
State	(2,587		)	(1,907		)	(2,871		)
Foreign	(628		)	(714		)	126
	(9,194		)	(7,080		)	(16,745		)
Total income tax expense		$80,900			$71,400			$59,800

A reconciliation of the federal statutory income tax rate to the Company’s effective tax rate is as follows:



	Year ended October 31,
	2016		2015		2014
Federal statutory income tax rate	35.0	%	35.0	%	35.0	%
State taxes, net of federal income tax benefit	1.7	%	2.4	%	2.9	%
Research and development tax credits	(2.7	%)	(1.9	%)	(1.2	%)
Domestic production activities tax deduction	(1.3	%)	(1.2	%)	(1.6	%)
Foreign tax differential, where permanently reinvested outside of the U.S.	(.8	%)	(.8	%)	—	%
Noncontrolling interests’ share of income	(.7	%)	(1.3	%)	(1.0	%)
Nontaxable reduction in accrued contingent consideration	—	%	(.2	%)	(3.4	%)
Tax-exempt (gains) losses on corporate-owned life insurance policies	(.1	%)	.1	%	(.6	%)
Other, net	.4	%	(.4	%)	—	%
Effective tax rate	31.5	%	31.7	%	30.1	%

The Company's effective tax rate in fiscal 2016 decreased to 31.5% from 31.7% in fiscal 2015. The decrease principally reflects the benefits recognized in fiscal 2016 of a larger income tax credit for qualified R&D activities resulting from the permanent extension of the U.S. federal R&D tax credit in December 2015 and a lower effective state tax rate driven by certain apportionment updates recognized upon the amendment of certain prior year tax returns in fiscal 2016. These decreases were partially offset by the benefits recognized in fiscal 2015 from a prior year tax return amendment for additional foreign tax credits related to R&D activities at one of our foreign subsidiaries and higher net income attributable to noncontrolling interests in subsidiaries structured as partnerships.

The Company’s effective tax rate in fiscal 2015 increased to 31.7% from 30.1% in fiscal 2014. The increase is principally due to the impact of a larger nontaxable reduction in accrued contingent consideration during fiscal 2014 associated with a prior year acquisition acquired by means of a stock transaction and the impact of higher tax-exempt unrealized gains in the cash surrender values of life insurance policies related to the LCP in fiscal 2014 compared to fiscal 2015. These increases were partially offset by an income tax credit for qualified R&D activities for the last ten months of fiscal 2014 that was recognized in the first quarter of fiscal 2015 resulting from the retroactive extension of the U.S. federal R&D tax credit in December 2014 to cover calendar year 2014, the benefit of recognizing additional foreign tax credits related to R&D activities at one of the Company's foreign subsidiaries inclusive of amendments to prior year tax returns, and the Company's decision to not make a provision for U.S. income taxes on the undistributed earnings of a fiscal 2015 foreign acquisition.

The Company files income tax returns in the U.S. federal jurisdiction and in multiple state jurisdictions. The Company is also subject to income taxes in certain jurisdictions outside the U.S., none of which are individually material to the accompanying consolidated financial statements. Generally, the Company is no longer subject to U.S. federal, state or foreign examinations by tax authorities for years prior to fiscal 2012.

The Company has not made a provision for U.S. income taxes on the undistributed

earnings of a fiscal 2015 foreign acquisition as such earnings are considered permanently

reinvested outside of the U.S. The amount of undistributed earnings is not material to the

Company's consolidated financial statements.

Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. The Company believes that it is more likely than not that it will generate sufficient future taxable income to utilize all of its deferred tax assets and has therefore not recorded a valuation allowance on any such asset.

Significant components of the Company’s deferred tax assets and liabilities are as follows (in thousands):



	As of October 31,
	2016			2015
Deferred tax assets:
Deferred compensation liability		$36,134			$31,520
Inventories	27,969			24,912
Share-based compensation	11,338			9,333
Bonus accrual	4,744			3,791
Vacation accrual	2,127			1,836
R&D related carryforward	2,057			1,826
Customer rebates accrual	1,917			1,236
Deferred revenue	1,365			2,005
Other	8,489			7,450
Total deferred tax assets	96,140			83,909

Deferred tax liabilities:
Goodwill and other intangible assets	(150,185		)	(148,448		)
Property, plant and equipment	(8,291		)	(7,667		)
Other	(2,156		)	(2,005		)
Total deferred tax liabilities	(160,632		)	(158,120		)
Net deferred tax liability		($64,492	)		($74,211	)

The net deferred tax liability is classified in the Company’s Consolidated Balance Sheets as follows (in thousands):



	As of October 31,
	2016			2015
Current asset		$41,063			$35,530
Long-term asset	407			847
Long-term liability	(105,962		)	(110,588		)
Net deferred tax liability		($64,492	)		($74,211	)

The Company's deferred income tax benefit was $9.2 million, $7.1 million and $16.7 million in fiscal 2016, 2015 and 2014, respectively. The larger deferred income tax benefit recognized in fiscal 2014 is principally due to the impact of impairment losses recorded in fiscal 2014 related to certain intangible assets recognized in connection with a fiscal 2013 acquisition, long-term deferred revenue recognized in fiscal 2014, and the impact from the timing of the extension of the bonus depreciation allowance on new property, plant and equipment that resulted in only two months of such allowance recognized in fiscal 2014.

As of October 31, 2016 and 2015, the Company’s liability for gross unrecognized tax benefits related to uncertain tax positions was $1.6 million and $.8 million, respectively, of which $1.0 million and $.5 million, respectively, would decrease the Company’s income tax expense and effective income tax rate if the tax benefits were recognized. A reconciliation of the activity related to the liability for gross unrecognized tax benefits during fiscal 2016 and 2015 is as follows (in thousands):



	Year ended October 31,
	2016			2015
Balances as of beginning of year		$787			$879
Increases related to current year tax positions	524			279
Increases related to prior year tax positions	521			30
Decreases related to prior year tax positions	(14		)	(80		)
Settlements	—			(118		)
Lapse of statutes of limitations	(216		)	(203		)
Balances as of end of year		$1,602			$787

FAIR VALUE MEASUREMENTS

12 Months Ended

Oct. 31, 2016

Fair Value Disclosures [Abstract]

Fair Value Disclosures [Text Block]

FAIR VALUE MEASUREMENTS

The Company's assets and liabilities that were measured at fair value on a recurring basis are set forth by level within the fair value hierarchy in the following tables (in thousands):



	As of October 31, 2016
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets:
Deferred compensation plans:
Corporate owned life insurance		$—		$86,004		$—		$86,004
Money market funds	2,515		—		—		2,515
Equity securities	1,832		—		—		1,832
Mutual funds	1,758		—		—		1,758
Other	1,043		50		—		1,093
Total assets		$7,148		$86,054		$—		$93,202

Liabilities:
Contingent consideration		$—		$—		$18,881		$18,881



	As of October 31, 2015
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets:
Deferred compensation plans:
Corporate owned life insurance		$—		$73,238		$—		$73,238
Money market funds	3,832		—		—		3,832
Equity securities	1,845		—		—		1,845
Mutual funds	1,665		—		—		1,665
Other	946		50		—		996
Total assets		$8,288		$73,288		$—		$81,576

Liabilities:
Contingent consideration		$—		$—		$21,405		$21,405

The Company maintains two non-qualified deferred compensation plans. The assets of the LCP principally represent cash surrender values of life insurance policies, which derive their fair values from investments in mutual funds that are managed by an insurance company and are classified within Level 2 and valued using a market approach. Certain other assets of the LCP represent investments in money market funds that are classified within Level 1. The assets of the Company's other deferred compensation plan are principally invested in equity securities and mutual funds that are classified within Level 1. The assets of both plans are held within irrevocable trusts and classified within other assets in the Company’s Consolidated Balance Sheets.

As part of the agreement to acquire certain assets of a company by the ETG in fiscal 2016, the Company may be obligated to pay contingent consideration of up to $2.0 million in aggregate during the five year period following the acquisition. As of October 31, 2016, the estimated fair value of the contingent consideration was $1.3 million.

As part of the agreement to acquire a subsidiary by the FSG in fiscal 2015, the Company may be obligated to pay contingent consideration of up to €6.1 million per year, or €24.4 million in aggregate, should the acquired entity meet certain earnings objectives during each of the first four years following the acquisition. During fiscal 2016, the Company paid €6.1 million, or $7.0 million, of contingent consideration based on the actual earnings of the acquired entity during the first year following the acquisition. As of October 31, 2016, the estimated fair value of the remaining contingent consideration was €16.1 million, or $17.6 million.

As part of the agreement to acquire a subsidiary by the ETG in fiscal 2013, the Company may have been obligated to pay contingent consideration of up to $20.0 million had the acquired entity met certain earnings objectives during the last three months of the calendar year of acquisition and may have been obligated to pay contingent consideration of up to $30.0 million had the acquired entity met certain earnings objectives during calendar years 2014 and 2015. In December 2013, the acquired entity incurred unanticipated costs associated with certain contracts for which revenue is recognized on the percentage-of-completion method and as a result, did not meet its calendar 2013 related earnings objectives. Accordingly, the $7.0 million estimated fair value of the contingent consideration accrued as of October 31, 2013 was recorded as a reduction to SG&A expenses in the Company's Consolidated Statement of Operations in the first quarter of fiscal 2014. During fiscal 2014, management revised its earnings estimates due to less favorable projected market conditions during the earnout period for certain of the space products the subsidiary produces. Accordingly, $12.5 million of the $13.7 million estimated fair value of the contingent consideration accrued as of October 31, 2013 was recorded as a reduction to SG&A expenses in fiscal 2014. The remaining $1.2 million accrued contingent consideration as of October 31, 2014 was recorded as a reduction of SG&A expenses in fiscal 2015. Additionally, the aforementioned market conditions resulted in the Company concluding it had a triggering event requiring assessment of impairment of the subsidiary's intangible assets during fiscal 2014. Please see below for further information pertaining to the measurement and recognition of impairment losses associated with the intangible assets of this subsidiary.

As part of the agreement to acquire a subsidiary by the ETG in fiscal 2012, the Company may have been obligated to pay contingent consideration of up to $14.6 million in aggregate had the acquired entity met certain earnings objectives during each of the first five years following the anniversary date of the acquisition. During fiscal 2014, management revised its earnings estimates due to less favorable projected market conditions during the earnout period. Accordingly, the $8.6 million estimated fair value of the contingent consideration accrued as of October 31, 2013 was recorded as a reduction to SG&A expenses in the Company's Consolidated Statement of Operations in fiscal 2014. Additionally, the aforementioned conditions resulted in the Company concluding it had a triggering event requiring assessment of impairment of the subsidiary's intangible assets during fiscal 2014. Please see below for further information pertaining to the measurement and recognition of impairment losses associated with the intangible assets of this subsidiary. As of October 31, 2016, the Company did not have any contingent consideration accrued pertaining to this acquisition.

The estimated fair value of the fiscal 2016 and 2015 contingent consideration arrangements described above are classified within Level 3 and were determined using a probability-based scenario analysis approach. Under this method, a set of discrete potential future subsidiary earnings was determined using internal estimates based on various revenue growth rate assumptions for each scenario. A probability of likelihood was assigned to each discrete potential future earnings estimate and the resultant contingent consideration was calculated. The resulting probability-weighted contingent consideration amounts were discounted using a weighted average discount rate reflecting the credit risk of a market participant. Changes in either the revenue growth rates, related earnings or the discount rate could result in a material change to the amount of contingent consideration accrued and such changes will be recorded in the Company's consolidated statements of operations.

The Level 3 inputs used to derive the estimated fair value of the Company's contingent consideration liability as of October 31, 2016 are as follows:



	Fiscal 2016 Acquisition					Fiscal 2015 Acquisition
Compound annual revenue growth rate range	(3	%)	-	11	%	2	%	-	20	%
Weighted average discount rate	3.4%					1.7%

Changes in the Company’s contingent consideration liability measured at fair value on a recurring basis using unobservable inputs (Level 3) during fiscal 2016 and 2015 are as follows (in thousands):



	Liabilities
Balance as of October 31, 2014		$1,184
Contingent consideration related to acquisition	21,355
Increase in accrued contingent consideration, net	293
Foreign currency transaction adjustments	(1,427		)
Balance as of October 31, 2015	21,405
Increase in accrued contingent consideration	3,063
Contingent consideration related to acquisition	1,225
Payment of contingent consideration	(6,960		)
Foreign currency transaction adjustments	148
Balance as of October 31, 2016		$18,881

Included in the accompanying Consolidated Balance Sheet under the following captions:
Accrued expenses and other current liabilities		$6,918
Other long-term liabilities	11,963
		$18,881

The Company recorded the increase in accrued contingent consideration and foreign currency transaction adjustments set forth in the table above within SG&A expenses in the Company's Consolidated Statements of Operations.

The Company did not have any transfers between Level 1 and Level 2 fair value measurements during fiscal 2016 and 2015.

The carrying amounts of the Company’s cash and cash equivalents, accounts receivable, trade accounts payable and accrued expenses and other current liabilities approximate fair value as of October 31, 2016 due to the relatively short maturity of the respective instruments. The carrying amount of long-term debt approximates fair value due to its variable interest rates.

During fiscal 2014, certain customer relationships, non-amortizing trade names and intellectual property within the ETG were measured at fair value on a nonrecurring basis, resulting in the recognition of impairment losses aggregating $15.0 million.

The fair values of the Company’s nonfinancial assets and liabilities that were measured at fair value on a nonrecurring basis, which are classified within Level 3, and the related impairment losses recognized in fiscal 2014 are as follows (in thousands):



	Carrying Amount		Impairment Loss			Fair Value (Level 3)
Assets:
Customer relationships		$19,366		($11,200	)		$8,166
Non-amortizing trade names	10,000		(1,900		)	8,100
Intellectual property	2,302		(1,900		)	402
Impairment of intangible assets				($15,000	)

The fair values of such customer relationships, non-amortizing trade names and intellectual property were determined using variations of the income approach which apply an asset-specific discount rate to a forecast of asset-specific cash flows. These methods utilize certain significant unobservable inputs categorized as Level 3. The Level 3 inputs used to derive the estimated fair values of the customer relationships, non-amortizing trade names and intellectual property during fiscal 2014 are as follows:



	Customer Relationships	Non-Amortizing Trade Names	Intellectual Property
Valuation method	Excess Earnings	Relief from Royalty	Relief from Royalty
Discount rate	15.0% - 19.0%	14.0% - 18.0%	19.0%
Annual attrition rate	25.0% - 30.0%	N/A	20.0%
Royalty rate	N/A	1.0% - 2.5%	6.0%

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

SHAREHOLDERS' EQUITY	12 Months Ended
SHAREHOLDERS' EQUITY	Oct. 31, 2016
Stockholders' Equity Note [Abstract]
Stockholders' Equity Note Disclosure [Text Block]	SHAREHOLDERS’ EQUITY Common Stock and Class A Common Stock The Company has two classes of common stock that are virtually identical in all economic respects except voting rights. Each share of Common Stock is entitled to one vote per share. Each share of Class A Common Stock is entitled to a 1/10 vote per share. Holders of the Company’s common stock are entitled to receive dividends and other distributions payable in cash, property, stock or otherwise, when and if declared by the Board of Directors. In the event of liquidation, after payment of debts and other liabilities of the Company, the remaining assets of the Company will be distributable ratably among the holders of both classes of common stock. Share Repurchases In 1990, the Company's Board of Directors authorized a share repurchase program, which allows the Company to repurchase shares of Company common stock in the open market or in privately negotiated transactions at the Company's discretion, subject to certain restrictions included in the Company's revolving credit agreement. As of October 31, 2016, the maximum number of shares that may yet be purchased under this program was 2,501,813 of either or both of the Company's Class A Common Stock and the Company's Common Stock. The repurchase program does not have a fixed termination date. During fiscal 2016, 2015 and 2014, the Company did not repurchase any shares of Company common stock under this program. Special and Extraordinary Cash Dividends In January 2014, the Company paid a special and extraordinary $.35 per share cash dividend on both classes of HEICO's common stock as well as its regular semi-annual $.06 per share cash dividend. The dividends, which aggregated $27.2 million, were principally funded from borrowings under the Company's revolving credit facility. Noncontrolling Interests Consistent with the Company's past practice of increasing its ownership in certain non-wholly-owned subsidiaries, on February 14, 2014, HEICO Corporation acquired the 20% noncontrolling interest held by LHT in four of the Company's existing subsidiaries principally operating in the specialty products and distribution businesses within HEICO Aerospace (the “Transaction”). Pursuant to the Transaction, HEICO Aerospace paid dividends proportional to the ownership (80%/20%) to HEICO and LHT, and HEICO transferred the businesses to HEICO Flight Support Corp. HEICO did not record any gain or loss in connection with the Transaction. LHT’s dividend of $67.4 million was paid in cash, principally using proceeds from the Company’s revolving credit facility. LHT remains a 20% owner in HEICO Aerospace, a leading producer of PMA parts and component repair and overhaul services.

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

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-Name Accounting Standards Codification
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+ Details

SHARE-BASED COMPENSATION

12 Months Ended

Oct. 31, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Disclosure of Compensation Related Costs, Share-based Payments [Text Block]

SHARE-BASED COMPENSATION

The Company may grant various forms of share-based compensation awards including stock options, restricted stock, restricted stock awards and stock appreciation rights through the HEICO Corporation 2012 Incentive Compensation Plan (“2012 Plan”). The 2012 Plan became effective in fiscal 2012, the same time the Company's 2002 Stock Option Plan (“2002 Plan”) expired. Also, in fiscal 2012, the Company made a decision to no longer issue options under its Non-Qualified Stock Option Plan (“NQSOP”). Options outstanding under the 2002 Plan and NQSOP may be exercised pursuant to their terms. The total number of shares approved by the shareholders of the Company for the 2012 Plan is 2.7 million plus any options outstanding under the 2002 Plan and NQSOP as of the 2012 Plan's effective date that are subsequently forfeited or expire. A total of approximately 4.3 million shares of the Company's common stock are reserved for issuance to employees, directors, officers and consultants as of October 31, 2016, including 3.3 million shares currently under option and 1.0 million shares available for future grants.

Stock options granted pursuant to the 2012 Plan may be designated as Common Stock and/or Class A Common Stock in such proportions as shall be determined by the Board of Directors or the Stock Option Plan Committee at its sole discretion. The exercise price per share of a stock option granted under the 2012 Plan may not be less than the fair market value of the designated class of Company common stock as of the date of grant and stock option grants vest ratably over a period specified as of the date of grant (generally five years) and expire ten years after the date of grant. Options issued under the 2012 Plan may be designated as incentive stock options or non-qualified stock options, but only employees are eligible to receive incentive stock options and no incentive stock options were outstanding as of October 31, 2016. The 2012 Plan will terminate no later than the tenth anniversary of its effective date.

Information concerning share-based activity for each of the last three fiscal years ended October 31 is as follows (in thousands, except per share data):



			Shares Under Option
	Shares Available For Grant		Shares		Weighted Average Exercise Price
Outstanding as of October 31, 2013	1,840		3,142			$21.48
Granted	(161	)	161			$43.37
Stock award issuance	(62	)	—			$—
Exercised	—		(39	)		$18.36
Outstanding as of October 31, 2014	1,617		3,264			$22.59
Granted	(291	)	291			$51.85
Exercised	—		(220	)		$16.85
Outstanding as of October 31, 2015	1,326		3,335			$25.52
Granted	(300	)	300			$46.05
Exercised	—		(291	)		$20.41
Cancelled	6		(6	)		$36.37
Outstanding as of October 31, 2016	1,032		3,338			$27.79

Information concerning stock options outstanding (all of which are vested or expected to vest) and stock options exercisable by class of common stock as of October 31, 2016 is as follows (in thousands, except per share and contractual life data):



	Options Outstanding
	Number Outstanding	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value
Common Stock	1,676		$25.08	4.3		$71,196
Class A Common Stock	1,662		$30.52	6.0	49,002
	3,338		$27.79	5.2		$120,198



	Options Exercisable
	Number Outstanding	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value
Common Stock	1,446		$21.05	3.6		$67,257
Class A Common Stock	916		$23.37	4.8	33,553
	2,362		$21.95	4.1		$100,810

Information concerning stock options exercised is as follows (in thousands):



	Year ended October 31,
	2016		2015		2014
Cash proceeds from stock option exercises		$5,924		$3,673		$708
Tax benefit realized from stock option exercises	868		1,402		93
Intrinsic value of stock option exercises	9,751		6,958		929

Net income attributable to HEICO for the fiscal years ended October 31, 2016, 2015 and 2014 includes compensation expense of $6.4 million, $5.8 million and $6.2 million, respectively, and an income tax benefit of $2.4 million, $2.2 million and $2.4 million, respectively, related to the Company’s stock options. Substantially all of the stock option compensation expense was recorded as a component of SG&A expenses in the Company’s Consolidated Statements of Operations. As of October 31, 2016, there was $14.4 million of pre-tax unrecognized compensation expense related to nonvested stock options, which is expected to be recognized over a weighted average period of approximately 3.2 years. The total fair value of stock options that vested in fiscal 2016, 2015 and 2014 was $5.8 million, $5.5 million and $5.9 million, respectively. If there were a change in control of the Company, all of the unvested options outstanding as of October 31, 2016 would become immediately exercisable.

For the fiscal years ended October 31, 2016, 2015 and 2014, the excess tax benefit resulting from tax deductions in excess of the cumulative compensation cost recognized for stock options exercised was $.9 million, $1.4 million and $.1 million, respectively, and is presented as a financing activity in the Company’s Consolidated Statements of Cash Flows.

The fair value of each stock option grant was estimated on the date of grant using the Black-Scholes option-pricing model based on the following weighted average assumptions for the fiscal years ended October 31, 2016, 2015 and 2014:



	2016				2015				2014
	Common Stock		Class A Common Stock		Common Stock		Class A Common Stock		Class A Common Stock
Expected stock price volatility	39.63	%	32.52	%	39.96	%	36.51	%	38.04	%
Risk-free interest rate	2.16	%	1.82	%	2.30	%	2.12	%	2.06	%
Dividend yield	.24	%	.32	%	.24	%	.32	%	.38	%
Forfeiture rate	.00	%	.00	%	.00	%	.00	%	.00	%
Expected option life (years)	9		6		9		7		7
Weighted average fair value	$23.62		$15.47		$28.46		$19.59		$17.23

In fiscal 2014, the Company issued 24,982 shares of Class A Common Stock in lieu of cash to satisfy an employee bonus award, which was accrued in fiscal 2013. Pursuant to the terms of the 2012 Plan, this stock award reduced the share reserve for issuance under the 2012 Plan by 62,455 shares.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References + Details

EMPLOYEE RETIREMENT PLANS

12 Months Ended

Oct. 31, 2016

Compensation and Retirement Disclosure [Abstract]

Pension and Other Postretirement Benefits Disclosure [Text Block]

EMPLOYEE RETIREMENT PLANS

The HEICO Savings and Investment Plan (the “401(k) Plan”) is a qualified defined contribution retirement plan under which eligible employees of the Company and its participating subsidiaries may make Elective Deferral Contributions up to the limitations set forth in Section 402(g) of the Internal Revenue Code. The Company generally makes a 25% or 50% Employer Matching Contribution, as determined by the Board of Directors, based on a participant’s Elective Deferral Contribution up to 6% of the participant’s Compensation for the Elective Deferral Contribution period. The 401(k) Plan also provides that the Company may make additional Employer Contributions. Employer Contributions may be contributed in the form of the Company’s common stock or cash, as determined by the Company. Employer Contributions awarded in the form of Company common stock are valued based on the fair value of the underlying shares as of the effective date of contribution. Employer Contributions may be diversified by a participant into any of the participant-directed investment options of the 401(k) Plan; however, Employee Contributions may not be invested in Company common stock. Unless specified otherwise, all capitalized terms herein are defined in the 401(k) Plan document.

Participants receive 100% vesting in Employee Contributions and on cash dividends received on Company common stock. Vesting in Employer Contributions is based on a participant’s number of Years of Service. Employer Contributions to the 401(k) Plan charged to income in fiscal 2016, 2015 and 2014 totaled $7.0 million, $6.1 million and $6.3 million, respectively, and were made through the issuance of new shares of Company common stock and the use of forfeited shares within the 401(k) Plan.

Information concerning share-based activity pertaining to the 401(k) Plan for each of the last three fiscal years ended October 31 is as follows (in thousands):



	Common Stock		Class A Common Stock
Shares available for issuance as of October 31, 2013	125		125
Issuance of common stock to 401(k) Plan	(57	)	(57	)
Shares available for issuance as of October 31, 2014	68		68
Issuance of common stock to 401(k) Plan	(54	)	(54	)
Shares available for issuance as of October 31, 2015	14		14
Shares registered for issuance to the 401(k) Plan	300		300
Issuance of common stock to 401(k) Plan	(62	)	(62	)
Shares available for issuance as of October 31, 2016	252		252

As previously mentioned in Note 1, Summary of Significant Accounting Policies, the Company acquired a frozen qualified defined benefit pension plan in connection with a prior year acquisition.

Changes in the Plan's projected benefit obligation and plan assets during fiscal 2016 and 2015 are as follows (in thousands):



Change in projected benefit obligation:
Projected benefit obligation as of October 31, 2014		$13,815
Actuarial loss	716
Interest cost	561
Benefits paid	(924		)
Projected benefit obligation as of October 31, 2015	14,168
Actuarial loss	655
Interest cost	613
Benefits paid	(925		)
Projected benefit obligation as of October 31, 2016		$14,511

Change in plan assets:
Fair value of plan assets as of October 31, 2014		$11,359
Actual return on plan assets	254
Employer contributions	78
Benefits paid	(924		)
Fair value of plan assets as of October 31, 2015	10,767
Actual return on plan assets	263
Employer contributions	405
Benefits paid	(925		)
Fair value of plan assets as of October 31, 2016		$10,510

Funded status as of October 31, 2015		($3,401	)
Funded status as of October 31, 2016		($4,001	)

The $4.0 million and $3.4 million difference between the projected benefit obligation and fair value of plan assets as of October 31, 2016 and October 31, 2015, respectively, is included in other long-term liabilities within the Company's Consolidated Balance Sheets. Additionally, the Plan experienced a $1.1 million and $1.2 million unrealized loss during fiscal 2016 and 2015, respectively, that was recognized in other comprehensive income (loss) where it is reported net of ($.4) million of tax in each year. The total unrealized loss in accumulated other comprehensive loss that has yet to be recognized as a component of net periodic pension income (expense) as of October 31, 2016 is $2.2 million (pre-tax), of which the Company expects to recognize less than $.1 million during fiscal 2017.

Weighted average assumptions used to determine the projected benefit obligation are as follows:



	As of October 31,
	2016		2015
Discount rate	3.99	%	4.47	%

Weighted average assumptions used to determine net pension income are as follows:



	Year ended October 31,
	2016		2015		2014
Discount rate	4.47	%	4.20	%	4.79	%
Expected return on plan assets	6.75	%	6.75	%	6.75	%

The discount rate used to determine the projected benefit obligation was determined using the results of a bond yield curve model based on a portfolio of high-quality bonds matching expected Plan benefit payments. The expected return on Plan assets was based upon the target asset allocation and investment return estimates for the Plan's equity and fixed income securities. In establishing this assumption, the Company considers many factors including both the historical rate of return and projected inflation-adjusted real rate of return on the Plan's various asset classes and the expected working lifetime for Plan participants.

Components of net pension income that were recorded within the Company's Consolidated Statements of Operations are as follows (in thousands):



	Year ended October 31,
	2016		2015		2014
Expected return on plan assets		$702		$738		$739
Interest cost	613		561		610
Net pension income		$89		$177		$129

The Company anticipates making contributions of $.4 million to the Plan during fiscal 2017. Estimated future benefit payments to be made during each of the next five fiscal years and in aggregate during the succeeding five fiscal years are as follows (in thousands):



Year ending October 31,
2017		$921
2018	895
2019	925
2020	926
2021	904
2022-2026	4,424

The fair value of the Plan's assets are set forth by level within the fair value hierarchy in the following tables (in thousands):



	As of October 31, 2016
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Fixed income securities		$5,219		$—		$—		$5,219
Equity securities	5,149		—		—		5,149
Money market funds and cash	142		—		—		142
		$10,510		$—		$—		$10,510



	As of October 31, 2015
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Fixed income securities		$5,372		$—		$—		$5,372
Equity securities	5,280		—		—		5,280
Money market funds and cash	115		—		—		115
		$10,767		$—		$—		$10,767

Fixed income securities consist of investments in mutual funds. Equity securities consist of investments in common stocks, mutual funds and exchange traded funds.

The Plan's actual and targeted asset allocations by investment category are as follows:



	As of October 31,
	2016				2015
	Actual		Target		Actual		Target
Fixed income securities	50	%	50	%	50	%	50	%
Equity securities	49	%	50	%	49	%	50	%
Money market funds and cash	1	%	—	%	1	%	—	%
	100	%	100	%	100	%	100	%

REDEEMABLE NONCONTROLLING INTERESTS

12 Months Ended

Oct. 31, 2016

Temporary Equity Redeemable Noncontrolling Interests [Abstract]

Temporary Equity Redeemable Noncontrolling Interests [Text Block]

REDEEMABLE NONCONTROLLING INTERESTS

The holders of equity interests in certain of the Company’s subsidiaries have rights (“Put Rights”) that may be exercised on varying dates causing the Company to purchase their equity interests through fiscal 2025. The Put Rights, all of which relate either to common shares or membership interests in limited liability companies, provide that the cash consideration to be paid for their equity interests (the “Redemption Amount”) be at fair value or at a formula that management intended to reasonably approximate fair value based solely on a multiple of future earnings over a measurement period. As of October 31, 2016, management’s estimate of the aggregate Redemption Amount of all Put Rights that the Company could be required to pay is approximately $99.5 million. The actual Redemption Amount will likely be different. The aggregate Redemption Amount of all Put Rights was determined using probability adjusted internal estimates of future earnings of the Company’s subsidiaries with Put Rights while considering the earliest exercise date, the measurement period and any applicable fair value adjustments. The portion of the estimated Redemption Amount as of October 31, 2016 redeemable at fair value is approximately $85.6 million and the portion redeemable based solely on a multiple of future earnings is approximately $13.9 million.

A summary of the Put Rights associated with the redeemable noncontrolling interests in certain of the Company’s subsidiaries as of October 31, 2016 is as follows;



Subsidiary Acquisition Year	Operating Segment	Company Ownership Interest	Earliest Put Right Year	Purchase Period (Years)
2005	ETG	95.9%	2017 ⁽¹⁾	4 ⁽²⁾
2006	FSG	80.1%	2017 ⁽¹⁾	4
2008	FSG	82.3%	2017 ⁽¹⁾	5
2009	ETG	82.5%	2017 ⁽¹⁾	1
2011	FSG	90.1%	N/A ⁽³⁾	1 ⁽⁴⁾
2012	ETG	78.0%	2017	2
2012	FSG	84.0%	2018	4
2012	FSG	80.1%	2019	4
2015	FSG	80.0%	2019	4
2015	FSG	80.1%	2020	4
2015	ETG	80.1%	2020	2
2015	FSG	80.1%	2022	4


⁽¹⁾Currently puttable
⁽²⁾A portion is to be purchased in a lump sum
⁽³⁾Put Right previously exercised
⁽⁴⁾Represents remaining purchase period for previously exercised Put Right

The estimated aggregate Redemption Amount of the Put Rights that are currently puttable or becoming puttable during fiscal 2017 is approximately $28.2 million, of which approximately $17.6 million would be payable in fiscal 2017 should all of the eligible associated noncontrolling interest holders elect to exercise their Put Rights during fiscal 2017. The estimated Redemption Amount of the remaining Put Rights previously exercised is $4.0 million, all of which is payable in fiscal 2017. Additionally, the Company has call rights to purchase the equity interests of the noncontrolling holders over the same period.

During fiscal 2016, the holders of a 19.9% noncontrolling equity interest in a subsidiary of the FSG that was acquired in fiscal 2011 exercised their option to cause the Company to purchase their interests over a two-year period ending in fiscal 2017. Accordingly, the Company’s ownership interest in the subsidiary increased to 90.1% effective March 2016.

The $3.6 million Redemption Amount for the redeemable noncontrolling interests acquired in fiscal 2016 and the $1.2 million Redemption Amount for the redeemable noncontrolling interest acquired in fiscal 2013 that was paid in fiscal 2014 were paid using cash provided by operating activities.

QUARTERLY FINANCIAL INFORMATION (UNAUDITED)

12 Months Ended

Oct. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Information [Text Block]

QUARTERLY FINANCIAL INFORMATION (UNAUDITED)



(in thousands, except per share data)	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Net sales:
2016		$306,227		$350,648		$356,084		$363,299
2015		$268,185		$291,421		$300,370		$328,672
Gross profit:
2016		$112,196		$134,029		$133,583		$135,684
2015		$93,797		$105,494		$108,092		$126,796
Net income from consolidated operations:
2016		$35,924		$43,729		$46,976		$49,521
2015		$32,091		$38,504		$38,938		$44,031
Net income attributable to HEICO:
2016		$31,271		$38,657		$42,002		$44,262
2015		$27,640		$33,105		$34,369		$38,250
Net income per share attributable to HEICO:
Basic:
2016		$.47		$.58		$.63		$.66
2015		$.42		$.50		$.51		$.57
Diluted:
2016		$.46		$.57		$.62		$.65
2015		$.41		$.49		$.51		$.56

During the first quarter of fiscal 2016, the Company incurred $3.1 million of acquisition costs in connection with a fiscal 2016 acquisition. These expenses, net of tax, decreased net income attributable to HEICO by $2.0 million, or $.03 per basic and diluted share.

During the first quarter of fiscal 2016, the Company recognized an income tax credit for qualified R&D activities for the last ten months of fiscal 2015 upon the retroactive and permanent extension of the U.S. federal R&D tax credit in December 2015. The tax credit, net of expenses, increased net income attributable to HEICO by $1.7 million, or $.03 per basic and $.02 per diluted share.

During the first quarter of fiscal 2015, the Company recognized an income tax credit for qualified R&D activities for the last ten months of fiscal 2014 upon the retroactive extension of the U.S. federal R&D tax credit in December 2014 to cover calendar year 2014. The tax credit, net of expenses, increased net income attributable to HEICO by $1.8 million, or $.03 per basic and diluted share.

Due to changes in the average number of common shares outstanding, net income per share attributable to HEICO for the full fiscal year may not equal the sum of the four individual quarters.

OPERATING SEGMENTS

12 Months Ended

Oct. 31, 2016

Segment Reporting [Abstract]

Segment Reporting Disclosure [Text Block]

OPERATING SEGMENTS

The Company has two operating segments: the Flight Support Group (“FSG”), consisting of HEICO Aerospace and HEICO Flight Support Corp. and their collective subsidiaries; and the Electronic Technologies Group (“ETG”), consisting of HEICO Electronic and its subsidiaries. The Company's operating segment reporting structure is consistent with how management reviews the business, makes investing and resource decisions and assesses operating performance. Additionally, characteristics such as similarity of products, customers, economic characteristics and various other factors are considered when identifying the Company's operating segments. The FSG designs, manufactures, repairs, overhauls and distributes jet engine and aircraft component replacement parts. The parts and services are approved by the FAA. The FSG also manufactures and sells specialty parts as a subcontractor for aerospace and industrial original equipment manufacturers and the U.S. government. Additionally, the FSG is a leading supplier, distributor, and integrator of military aircraft parts and support services primarily to foreign military organizations allied with the U.S. and is a leading manufacturer of advanced niche components and complex composite assemblies for commercial aviation, defense and space applications. The ETG designs and manufactures electronic, microwave, and electro-optical equipment and components, three-dimensional microelectronic and stacked memory products, high-speed interface products, high voltage interconnection devices, high voltage advanced power electronics products, power conversion products, underwater locator beacons, electromagnetic interference shielding, traveling wave tube amplifiers, harsh environment electronic connectors and other interconnect products, communications and electronic intercept receivers and tuners, crashworthy and ballistically self-sealing auxiliary fuel systems for military rotorcraft, RF and microwave amplifiers, transmitters and receivers, and satellite microwave modules and integrated subsystems primarily for the aviation, defense, space, medical, telecommunications and electronics industries.

The Company’s reportable operating segments offer distinctive products and services that are marketed through different channels. They are managed separately because of their unique technology and service requirements.

Segment Profit or Loss

The accounting policies of the Company’s operating segments are the same as those described in Note 1, Summary of Significant Accounting Policies. Management evaluates segment performance based on segment operating income.

Information on the Company’s two operating segments, the FSG and the ETG, for each of the last three fiscal years ended October 31 is as follows (in thousands):



	Segment				Other, Primarily Corporate and Intersegment			Consolidated Totals
	FSG		ETG		Other, Primarily Corporate and Intersegment			Consolidated Totals
Year ended October 31, 2016:
Net sales		$875,870		$511,272		($10,884	)		$1,376,258
Depreciation	12,113		8,030		218			20,361
Amortization	16,590		22,664		662			39,916
Operating income	163,427		126,031		(24,113		)	265,345
Capital expenditures	18,434		11,962		467			30,863
Total assets	878,674		1,017,827		142,974			2,039,475

Year ended October 31, 2015:
Net sales		$809,700		$390,982		($12,034	)		$1,188,648
Depreciation	10,859		6,803		168			17,830
Amortization	13,470		15,945		662			30,077
Operating income	149,798		98,833		(18,975		)	229,656
Capital expenditures	11,737		6,201		311			18,249
Total assets	868,218		746,018		122,151			1,736,387

Year ended October 31, 2014:
Net sales		$762,801		$379,404		($9,894	)		$1,132,311
Depreciation	9,809		7,113		146			17,068
Amortization	10,034		19,993		662			30,689
Operating income	136,480		88,914		(22,006		)	203,388
Capital expenditures	9,437		6,327		646			16,410
Total assets	676,824		703,144		109,246			1,489,214

The following table summarizes the Company’s net sales to external customers by product lines included in each operating segment (in thousands):



	Year ended October 31,
	2016			2015			2014
Flight Support Group:
Aftermarket replacement parts ⁽¹⁾		$405,108			$356,070			$327,416
Repair and overhaul parts and services ⁽²⁾	251,357			258,952			253,717
Specialty products ⁽³⁾	219,405			194,678			181,668
Total net sales		$875,870			$809,700			$762,801

Electronic Technologies Group:
Electronic component parts for defense,
space and aerospace equipment ⁽⁴⁾		$371,297			$255,095			$243,130
Electronic component parts for equipment
in various other industries ⁽⁵⁾	139,975			135,887			136,274
Total net sales		$511,272			$390,982			$379,404

Other, primarily corporate and intersegment		($10,884	)		($12,034	)		($9,894	)

Total consolidated net sales		$1,376,258			$1,188,648			$1,132,311


⁽¹⁾	Includes various jet engine and aircraft component replacement parts.


⁽²⁾	Includes primarily the sale of parts consumed in various repair and overhaul services on selected jet engine and aircraft components, avionics, instruments, composites and flight surfaces of commercial and military aircraft.


⁽³⁾	Includes primarily the sale of specialty components to OEMs such as thermal insulation blankets, renewable /reusable insulation systems, advanced niche components, complex composite assemblies, and expanded foil mesh.

⁽⁴⁾

Includes various component parts such as electro-optical infrared simulation and test equipment, electro-optical laser products, electro-optical, microwave and other power equipment, high-speed interface products, power conversion products, underwater locator beacons, traveling wave tube amplifiers, microwave power modules, three-dimensional microelectronic and stacked memory products, crashworthy and ballistically self-sealing auxiliary fuel systems, RF and microwave amplifiers, transmitters and receivers, and high performance communications and electronic intercept receivers and tuners.


⁽⁵⁾	Includes various component parts such as electromagnetic and radio interference shielding, high voltage interconnection devices, high voltage advanced power electronics, harsh environment connectivity products, and custom molded cable assemblies.

Major Customer and Geographic Information

The Company markets its products and services in approximately 100 countries. The following table summarizes the Company’s net sales to customers located in the United States and to those in other countries for each of the last three fiscal years ended October 31 (in thousands). Net sales are attributed to countries based on the location of the customer. Net sales to any one customer or originating from any one country did not account for 10% or more of the Company’s consolidated net sales during any of the last three fiscal years. The following table also summarizes the Company’s long-lived assets held within and outside of the United States as of October 31 of the last three fiscal years (in thousands). Long-lived assets consist of net property, plant and equipment.



	2016		2015		2014
Net Sales:
United States of America		$904,670		$785,567		$754,616
Other countries	471,588		403,081		377,695
Total net sales		$1,376,258		$1,188,648		$1,132,311

Long-lived assets:
United States of America		$94,889		$85,253		$84,116
Other countries	26,722		20,417		9,749
Total long-lived assets		$121,611		$105,670		$93,865

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8981-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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+ Details

COMMITMENTS AND CONTINGENCIES

12 Months Ended

Oct. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies Disclosure [Text Block]

COMMITMENTS AND CONTINGENCIES

Lease Commitments

The Company leases certain property and equipment, including manufacturing facilities and office equipment under operating leases. Some of these leases provide the Company with the option after the initial lease term either to purchase the property at the then fair market value or renew the lease at the then fair rental value. Generally, management expects that leases will be renewed or replaced by other leases in the normal course of business.

Future minimum payments under non-cancelable operating leases for the next five fiscal years and thereafter are estimated to be as follows (in thousands):



Year ending October 31,
2017		$11,787
2018	8,577
2019	6,491
2020	6,063
2021	5,932
Thereafter	18,002
Total minimum lease commitments		$56,852

Total rent expense charged to operations for operating leases in fiscal 2016, 2015 and 2014 amounted to $14.7 million, $11.9 million and $11.2 million, respectively.

Guarantees

As of October 31, 2016, the Company has arranged for standby letters of credit aggregating $2.4 million, which are supported by its revolving credit facility. One letter of credit in the amount of $1.5 million is to satisfy the security requirement of the insurance company used by the Company for potential workers' compensation claims and the remainder pertain to performance guarantees related to customer contracts entered into by certain of the Company's subsidiaries.

Product Warranty

Changes in the Company’s product warranty liability in fiscal 2016 and 2015 are as follows (in thousands):



	Year ended October 31,
	2016			2015
Balances as of beginning of year		$3,203			$4,079
Accruals for warranties	3,025			1,215
Acquired warranty liabilities	—			35
Warranty claims settled	(2,877		)	(2,126		)
Balances as of end of year		$3,351			$3,203

Litigation

The Company is involved in various legal actions arising in the normal course of business. Based upon the Company’s and its legal counsel’s evaluations of any claims or assessments, management is of the opinion that the outcome of these matters will not have a material adverse effect on the Company’s results of operations, financial position or cash flows.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

12 Months Ended

Oct. 31, 2016

Summary Of Significant Accounting Policies (Policies) [Abstract]

Nature Of Business, Policy [Policy Text Block]

Nature of Business

Basis Of Presentation, Policy [Policy Text Block]

Basis of Presentation

Use of Estimates and Assumptions, Policy [Policy Text Block]

Use of Estimates and Assumptions

Cash and Cash Equivalents, Policy [Policy Text Block]

Cash and Cash Equivalents

Accounts Receivable, Policy [Policy Text Block]

Accounts Receivable

Concentrations Of Credit Risk, Policy [Policy Text Block]

Concentrations of Credit Risk

Inventory, Policy [Policy Text Block]

Inventory

Property, Plant and Equipment, Policy [Policy Text Block]

Property, Plant and Equipment

The costs of major additions and improvements are capitalized. Leasehold improvements are amortized over the shorter of the leasehold improvement’s useful life or the lease term.

Capital Leases, Policy [Policy Text Block]

Capital Leases

Business Combinations, Policy [Policy Text Block]

Business Combinations

Goodwill and Other Intangible Assets, Policy [Policy Text Block]

Goodwill and Other Intangible Assets



Customer relationships	6	to	15	years
Intellectual property	7	to	22	years
Licenses	10	to	17	years
Patents	5	to	20	years
Trade names	8	to	15	years

Investments, Policy [Policy Text Block]

Investments

Customer Rebates and Credits, Policy [Policy Text Block]

Customer Rebates and Credits

Product Warranties, Policy [Policy Text Block]

Product Warranties

Defined Benefit Pension Plan, Policy [Policy Text Block]

Defined Benefit Pension Plan

Revenue Recognition, Policy [Policy Text Block]

Revenue Recognition

Billings are made based on the completion of certain milestones as provided for in the contracts.

Stock-Based Compensation, Policy [Policy Text Block]

Stock-Based Compensation

Income Taxes, Policy [Policy Text Block]

Income Taxes

Redeemable Noncontrolling Interests, Policy [Policy Text Block]

Redeemable Noncontrolling Interests

Net Income per Share Attributable to HEICO Shareholders, Policy [Policy Text Block]

Net Income per Share Attributable to HEICO Shareholders

Foreign Currency Translation, Policy [Policy Text Block]

Foreign Currency

Contingencies, Policy [Policy Text Block]

Contingencies

New Accounting Pronouncements, Policy [Policy Text Block]

New Accounting Pronouncements

ACQUISITIONS (Tables)

12 Months Ended

Oct. 31, 2016

Business Acquisition [Line Items]

Schedule of Pro Forma Information [Table Text Block]

The following table presents unaudited pro forma financial information for fiscal 2015 and fiscal 2014 as if the Company's fiscal 2015 acquisitions had occurred as of November 1, 2013 (in thousands):



	Year ended October 31,
	2015		2014
Net sales		$1,244,911		$1,228,987
Net income from consolidated operations		$163,012		$150,412
Net income attributable to HEICO		$140,771		$130,539
Net income per share attributable to HEICO shareholders:
Basic		$2.11		$1.96
Diluted		$2.08		$1.94

Other Acquisitions [Member]

Business Acquisition [Line Items]

Schedule of Fair Value of Total Consideration [Table Text Block]

The following table summarizes the aggregate total consideration for the Company's other acquisitions (in thousands):



	Year ended October 31,
	2016		2015			2014
Cash paid		$11,000		$171,829			$6,759
Less: cash acquired	—		(5,062		)	—
Cash paid, net	11,000		166,767			6,759
Contingent purchase consideration	1,225		21,355			—
Additional purchase consideration	—		(211		)	(56		)
Total consideration		$12,225		$187,911			$6,703

Schedule of Purchase Price Allocation [Table Text Block]



	Year ended October 31,
	2016		2015		2014
Assets acquired:
Identifiable intangible assets		$5,100		$102,981		$3,400
Goodwill	6,876		88,602		2,552
Inventories	249		18,055		247
Property, plant and equipment	—		16,031		248
Accounts receivable	—		10,719		256
Other assets	—		2,571		12
Total assets acquired, excluding cash	12,225		238,959		6,715

Liabilities assumed:
Deferred income taxes	—		6,788		—
Accounts payable	—		4,845		—
Accrued expenses	—		2,570		12
Other liabilities	—		621		—
Total liabilities assumed	—		14,824		12

Noncontrolling interests in consolidated subsidiaries	—		36,224		—

Net assets acquired, excluding cash		$12,225		$187,911		$6,703

Electronic Technologies Group [Member] | Robertson [Member]

Business Acquisition [Line Items]

Schedule of Fair Value of Total Consideration [Table Text Block]

The following table summarizes the total consideration for the acquisition of Robertson (in thousands):



Cash paid		$256,293
Less: cash acquired	(3,271		)
Total consideration		$253,022

Schedule of Purchase Price Allocation [Table Text Block]



Assets acquired:
Goodwill		$93,425
Customer relationships	55,100
Intellectual property	39,600
Trade name	28,400
Inventories	27,417
Property, plant and equipment	7,476
Accounts receivable	4,973
Other assets	1,884
Total assets acquired, excluding cash	258,275

Liabilities assumed:
Accounts payable	4,606
Accrued expenses	647
Total liabilities assumed	5,253
Net assets acquired, excluding cash		$253,022

Schedule of Pro Forma Information [Table Text Block]

The following table presents unaudited pro forma financial information for fiscal 2015 as if the acquisition of Robertson had occurred as of November 1, 2014 (in thousands):



	Year ended October 31, 2015
Net sales		$1,275,926
Net income from consolidated operations		$162,645
Net income attributable to HEICO		$142,445
Net income per share attributable to HEICO shareholders:
Basic		$2.13
Diluted		$2.10

SELECTED FINANCIAL STATEMENT INFORMATION (Tables)

12 Months Ended

Oct. 31, 2016

Selected Financial Statement Information [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

Accounts Receivable



	As of October 31,
(in thousands)	2016			2015
Accounts receivable		$205,386			$183,631
Less: Allowance for doubtful accounts	(3,159		)	(2,038		)
Accounts receivable, net		$202,227			$181,593

Costs And Estimated Earnings On Uncompleted Percentage Of Completion Contracts [Table Text Block]

Costs and Estimated Earnings on Uncompleted Percentage-of-Completion Contracts



	As of October 31,
(in thousands)	2016			2015
Costs incurred on uncompleted contracts		$19,086			$22,645
Estimated earnings	13,887			16,116
	32,973			38,761
Less: Billings to date	(39,142		)	(36,442		)
		($6,169	)		$2,319
Included in the accompanying Consolidated Balance Sheets under the following captions:
Accounts receivable, net (costs and estimated earnings in excess of billings)		$4,839			$6,263
Accrued expenses and other current liabilities (billings in excess of costs and estimated earnings)	(11,008		)	(3,944		)
		($6,169	)		$2,319

Schedule of Inventory, Current [Table Text Block]

Inventories



	As of October 31,
(in thousands)	2016			2015
Finished products		$131,008			$119,262
Work in process	36,076			32,201
Materials, parts, assemblies and supplies	117,153			89,739
Contracts in process	3,253			4,521
Less: Billings to date	(1,188		)	(2,206		)
Inventories, net of valuation reserves		$286,302			$243,517

Property, Plant and Equipment [Table Text Block]

Property, Plant and Equipment



	As of October 31,
(in thousands)	2016			2015
Land		$5,090			$5,060
Buildings and improvements	79,205			70,626
Machinery, equipment and tooling	171,717			152,022
Construction in progress	10,453			4,668
	266,465			232,376
Less: Accumulated depreciation and amortization	(144,854		)	(126,706		)
Property, plant and equipment, net		$121,611			$105,670

Schedule Of Accrued Expenses and Other Current Liabilities [Table Text Block]

Accrued Expenses and Other Current Liabilities



	As of October 31,
(in thousands)	2016		2015
Accrued employee compensation and related payroll taxes		$67,660		$53,238
Deferred revenue	32,135		16,498
Accrued customer rebates and credits	11,881		8,072
Accrued additional purchase consideration	6,918		6,859
Other	17,459		15,488
Accrued expenses and other current liabilities		$136,053		$100,155

Schedule of Research and Development Expenses [Table Text Block]

The amount of new product research and development ("R&D") expenses included in cost of sales is as follows (in thousands):



	Year ended October 31,
	2016		2015		2014
R&D expenses		$44,726		$38,747		$37,377

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

Changes in the components of accumulated other comprehensive loss during fiscal 2016 and 2015 are as follows (in thousands):



	Foreign Currency Translation			Pension Benefit Obligation			Accumulated Other Comprehensive Loss
Balances as of October 31, 2014		($8,348	)		$59			($8,289	)
Unrealized loss	(16,020		)	(771		)	(16,791		)
Balances as of October 31, 2015	(24,368		)	(712		)	(25,080		)
Unrealized gain (loss)	415			(661		)	(246		)
Balances as of October 31, 2016		($23,953	)		($1,373	)		($25,326	)

GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

12 Months Ended

Oct. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill [Table Text Block]

Changes in the carrying amount of goodwill during fiscal 2016 and 2015 by operating segment are as follows (in thousands):



	Segment						Consolidated
	FSG			ETG			Totals
Balances as of October 31, 2014		$282,407			$403,864			$686,271
Goodwill acquired	56,441			32,703			89,144
Foreign currency translation adjustments	(1,341		)	(7,435		)	(8,776		)
Balances as of October 31, 2015	337,507			429,132			766,639
Goodwill acquired	—			100,301			100,301
Foreign currency translation adjustments	(256		)	(425		)	(681		)
Adjustments to goodwill	(570		)	28			(542		)
Balances as of October 31, 2016		$336,681			$529,036			$865,717

Schedule Of Identifiable Intangible Assets [Table Text Block]

Identifiable intangible assets consist of the following (in thousands):



	As of October 31, 2016							As of October 31, 2015
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Amortizing Assets:
Customer relationships		$248,271		($88,829	)		$159,442		$190,450		($63,461	)		$126,989
Intellectual property	139,817		(33,291		)	106,526		98,143		(22,912		)	75,231
Licenses	6,559		(2,325		)	4,234		4,200		(1,882		)	2,318
Non-compete agreements	811		(811		)	—		914		(914		)	—
Patents	779		(480		)	299		746		(447		)	299
Trade names	466		(77		)	389		166		(38		)	128
	396,703		(125,813		)	270,890		294,619		(89,654		)	204,965
Non-Amortizing Assets:
Trade names	95,973		—			95,973		67,628		—			67,628
		$492,676		($125,813	)		$366,863		$362,247		($89,654	)		$272,593

LONG-TERM DEBT (Tables)

12 Months Ended

Oct. 31, 2016

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments [Table Text Block]

Long-term debt consists of the following (in thousands):



	As of October 31,
	2016			2015
Borrowings under revolving credit facility		$455,083			$365,203
Capital leases	3,142			2,395
	458,225			367,598
Less: Current maturities of long-term debt	(411		)	(357		)
		$457,814			$367,241

Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]

The estimated future minimum lease payments of all capital leases for the next five fiscal years and thereafter are as follows (in thousands):



Year ending October 31,
2017		$554
2018	537
2019	538
2020	501
2021	497
Thereafter	1,107
Total minimum lease payments	3,734
Less: amount representing interest	(592		)
Present value of minimum lease payments		$3,142

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
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+ Details

INCOME TAXES (Tables)

12 Months Ended

Oct. 31, 2016

Income Tax Disclosure [Abstract]

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

The components of income before income taxes and noncontrolling interests are as follows (in thousands):



	Year ended October 31,
	2016		2015		2014
Domestic		$227,927		$206,612		$185,842
Foreign	29,123		18,352		12,730
Income before taxes and noncontrolling interests		$257,050		$224,964		$198,572

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

The components of the provision for income taxes on income before income taxes and noncontrolling interests are as follows (in thousands):



	Year ended October 31,
	2016			2015			2014
Current:
Federal		$75,261			$65,857			$63,264
State	7,463			8,559			10,145
Foreign	7,370			4,064			3,136
	90,094			78,480			76,545
Deferred:
Federal	(5,979		)	(4,459		)	(14,000		)
State	(2,587		)	(1,907		)	(2,871		)
Foreign	(628		)	(714		)	126
	(9,194		)	(7,080		)	(16,745		)
Total income tax expense		$80,900			$71,400			$59,800

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

A reconciliation of the federal statutory income tax rate to the Company’s effective tax rate is as follows:



	Year ended October 31,
	2016		2015		2014
Federal statutory income tax rate	35.0	%	35.0	%	35.0	%
State taxes, net of federal income tax benefit	1.7	%	2.4	%	2.9	%
Research and development tax credits	(2.7	%)	(1.9	%)	(1.2	%)
Domestic production activities tax deduction	(1.3	%)	(1.2	%)	(1.6	%)
Foreign tax differential, where permanently reinvested outside of the U.S.	(.8	%)	(.8	%)	—	%
Noncontrolling interests’ share of income	(.7	%)	(1.3	%)	(1.0	%)
Nontaxable reduction in accrued contingent consideration	—	%	(.2	%)	(3.4	%)
Tax-exempt (gains) losses on corporate-owned life insurance policies	(.1	%)	.1	%	(.6	%)
Other, net	.4	%	(.4	%)	—	%
Effective tax rate	31.5	%	31.7	%	30.1	%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

Significant components of the Company’s deferred tax assets and liabilities are as follows (in thousands):



	As of October 31,
	2016			2015
Deferred tax assets:
Deferred compensation liability		$36,134			$31,520
Inventories	27,969			24,912
Share-based compensation	11,338			9,333
Bonus accrual	4,744			3,791
Vacation accrual	2,127			1,836
R&D related carryforward	2,057			1,826
Customer rebates accrual	1,917			1,236
Deferred revenue	1,365			2,005
Other	8,489			7,450
Total deferred tax assets	96,140			83,909

Deferred tax liabilities:
Goodwill and other intangible assets	(150,185		)	(148,448		)
Property, plant and equipment	(8,291		)	(7,667		)
Other	(2,156		)	(2,005		)
Total deferred tax liabilities	(160,632		)	(158,120		)
Net deferred tax liability		($64,492	)		($74,211	)

The net deferred tax liability is classified in the Company’s Consolidated Balance Sheets as follows (in thousands):



	As of October 31,
	2016			2015
Current asset		$41,063			$35,530
Long-term asset	407			847
Long-term liability	(105,962		)	(110,588		)
Net deferred tax liability		($64,492	)		($74,211	)

Summary of Income Tax Contingencies [Table Text Block]

A reconciliation of the activity related to the liability for gross unrecognized tax benefits during fiscal 2016 and 2015 is as follows (in thousands):



	Year ended October 31,
	2016			2015
Balances as of beginning of year		$787			$879
Increases related to current year tax positions	524			279
Increases related to prior year tax positions	521			30
Decreases related to prior year tax positions	(14		)	(80		)
Settlements	—			(118		)
Lapse of statutes of limitations	(216		)	(203		)
Balances as of end of year		$1,602			$787

FAIR VALUE MEASUREMENTS (Tables)

12 Months Ended

Oct. 31, 2016

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

The Company's assets and liabilities that were measured at fair value on a recurring basis are set forth by level within the fair value hierarchy in the following tables (in thousands):



	As of October 31, 2016
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets:
Deferred compensation plans:
Corporate owned life insurance		$—		$86,004		$—		$86,004
Money market funds	2,515		—		—		2,515
Equity securities	1,832		—		—		1,832
Mutual funds	1,758		—		—		1,758
Other	1,043		50		—		1,093
Total assets		$7,148		$86,054		$—		$93,202

Liabilities:
Contingent consideration		$—		$—		$18,881		$18,881



	As of October 31, 2015
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets:
Deferred compensation plans:
Corporate owned life insurance		$—		$73,238		$—		$73,238
Money market funds	3,832		—		—		3,832
Equity securities	1,845		—		—		1,845
Mutual funds	1,665		—		—		1,665
Other	946		50		—		996
Total assets		$8,288		$73,288		$—		$81,576

Liabilities:
Contingent consideration		$—		$—		$21,405		$21,405

Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Table Text Block]

The Level 3 inputs used to derive the estimated fair value of the Company's contingent consideration liability as of October 31, 2016 are as follows:



	Fiscal 2016 Acquisition					Fiscal 2015 Acquisition
Compound annual revenue growth rate range	(3	%)	-	11	%	2	%	-	20	%
Weighted average discount rate	3.4%					1.7%

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]



	Liabilities
Balance as of October 31, 2014		$1,184
Contingent consideration related to acquisition	21,355
Increase in accrued contingent consideration, net	293
Foreign currency transaction adjustments	(1,427		)
Balance as of October 31, 2015	21,405
Increase in accrued contingent consideration	3,063
Contingent consideration related to acquisition	1,225
Payment of contingent consideration	(6,960		)
Foreign currency transaction adjustments	148
Balance as of October 31, 2016		$18,881

Included in the accompanying Consolidated Balance Sheet under the following captions:
Accrued expenses and other current liabilities		$6,918
Other long-term liabilities	11,963
		$18,881

Schedule of Impaired Intangible Assets [Table Text Block]



	Carrying Amount		Impairment Loss			Fair Value (Level 3)
Assets:
Customer relationships		$19,366		($11,200	)		$8,166
Non-amortizing trade names	10,000		(1,900		)	8,100
Intellectual property	2,302		(1,900		)	402
Impairment of intangible assets				($15,000	)

Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block]

The Level 3 inputs used to derive the estimated fair values of the customer relationships, non-amortizing trade names and intellectual property during fiscal 2014 are as follows:



	Customer Relationships	Non-Amortizing Trade Names	Intellectual Property
Valuation method	Excess Earnings	Relief from Royalty	Relief from Royalty
Discount rate	15.0% - 19.0%	14.0% - 18.0%	19.0%
Annual attrition rate	25.0% - 30.0%	N/A	20.0%
Royalty rate	N/A	1.0% - 2.5%	6.0%

SHARE-BASED COMPENSATION (Tables)

12 Months Ended

Oct. 31, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule Of Share Based Compensation Stock Options Activity And Shares Available For Grants [Table Text Block]

Information concerning share-based activity for each of the last three fiscal years ended October 31 is as follows (in thousands, except per share data):



			Shares Under Option
	Shares Available For Grant		Shares		Weighted Average Exercise Price
Outstanding as of October 31, 2013	1,840		3,142			$21.48
Granted	(161	)	161			$43.37
Stock award issuance	(62	)	—			$—
Exercised	—		(39	)		$18.36
Outstanding as of October 31, 2014	1,617		3,264			$22.59
Granted	(291	)	291			$51.85
Exercised	—		(220	)		$16.85
Outstanding as of October 31, 2015	1,326		3,335			$25.52
Granted	(300	)	300			$46.05
Exercised	—		(291	)		$20.41
Cancelled	6		(6	)		$36.37
Outstanding as of October 31, 2016	1,032		3,338			$27.79

Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding [Table Text Block]



	Options Outstanding
	Number Outstanding	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value
Common Stock	1,676		$25.08	4.3		$71,196
Class A Common Stock	1,662		$30.52	6.0	49,002
	3,338		$27.79	5.2		$120,198



	Options Exercisable
	Number Outstanding	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value
Common Stock	1,446		$21.05	3.6		$67,257
Class A Common Stock	916		$23.37	4.8	33,553
	2,362		$21.95	4.1		$100,810

Schedule of Cash Proceeds Received from Share-based Payment Awards [Table Text Block]

Information concerning stock options exercised is as follows (in thousands):



	Year ended October 31,
	2016		2015		2014
Cash proceeds from stock option exercises		$5,924		$3,673		$708
Tax benefit realized from stock option exercises	868		1,402		93
Intrinsic value of stock option exercises	9,751		6,958		929

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]



	2016				2015				2014
	Common Stock		Class A Common Stock		Common Stock		Class A Common Stock		Class A Common Stock
Expected stock price volatility	39.63	%	32.52	%	39.96	%	36.51	%	38.04	%
Risk-free interest rate	2.16	%	1.82	%	2.30	%	2.12	%	2.06	%
Dividend yield	.24	%	.32	%	.24	%	.32	%	.38	%
Forfeiture rate	.00	%	.00	%	.00	%	.00	%	.00	%
Expected option life (years)	9		6		9		7		7
Weighted average fair value	$23.62		$15.47		$28.46		$19.59		$17.23

EMPLOYEE RETIREMENT PLANS EMPLOYEE RETIREMENT PLANS (Tables)

12 Months Ended

Oct. 31, 2016

Compensation and Retirement Disclosure [Abstract]

Schedule of Other Share-based Compensation, Activity [Table Text Block]

Information concerning share-based activity pertaining to the 401(k) Plan for each of the last three fiscal years ended October 31 is as follows (in thousands):



	Common Stock		Class A Common Stock
Shares available for issuance as of October 31, 2013	125		125
Issuance of common stock to 401(k) Plan	(57	)	(57	)
Shares available for issuance as of October 31, 2014	68		68
Issuance of common stock to 401(k) Plan	(54	)	(54	)
Shares available for issuance as of October 31, 2015	14		14
Shares registered for issuance to the 401(k) Plan	300		300
Issuance of common stock to 401(k) Plan	(62	)	(62	)
Shares available for issuance as of October 31, 2016	252		252

Schedule of Changes in Projected Benefit Obligations [Table Text Block]

Changes in the Plan's projected benefit obligation and plan assets during fiscal 2016 and 2015 are as follows (in thousands):



Change in projected benefit obligation:
Projected benefit obligation as of October 31, 2014		$13,815
Actuarial loss	716
Interest cost	561
Benefits paid	(924		)
Projected benefit obligation as of October 31, 2015	14,168
Actuarial loss	655
Interest cost	613
Benefits paid	(925		)
Projected benefit obligation as of October 31, 2016		$14,511

Change in plan assets:
Fair value of plan assets as of October 31, 2014		$11,359
Actual return on plan assets	254
Employer contributions	78
Benefits paid	(924		)
Fair value of plan assets as of October 31, 2015	10,767
Actual return on plan assets	263
Employer contributions	405
Benefits paid	(925		)
Fair value of plan assets as of October 31, 2016		$10,510

Funded status as of October 31, 2015		($3,401	)
Funded status as of October 31, 2016		($4,001	)

Schedule of Assumptions Used [Table Text Block]

Weighted average assumptions used to determine the projected benefit obligation are as follows:



	As of October 31,
	2016		2015
Discount rate	3.99	%	4.47	%

Weighted average assumptions used to determine net pension income are as follows:



	Year ended October 31,
	2016		2015		2014
Discount rate	4.47	%	4.20	%	4.79	%
Expected return on plan assets	6.75	%	6.75	%	6.75	%

Schedule of Net Benefit Costs [Table Text Block]

Components of net pension income that were recorded within the Company's Consolidated Statements of Operations are as follows (in thousands):



	Year ended October 31,
	2016		2015		2014
Expected return on plan assets		$702		$738		$739
Interest cost	613		561		610
Net pension income		$89		$177		$129

Schedule of Expected Benefit Payments [Table Text Block]

Estimated future benefit payments to be made during each of the next five fiscal years and in aggregate during the succeeding five fiscal years are as follows (in thousands):



Year ending October 31,
2017		$921
2018	895
2019	925
2020	926
2021	904
2022-2026	4,424

Schedule of Allocation of Plan Assets [Table Text Block]

The fair value of the Plan's assets are set forth by level within the fair value hierarchy in the following tables (in thousands):



	As of October 31, 2016
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Fixed income securities		$5,219		$—		$—		$5,219
Equity securities	5,149		—		—		5,149
Money market funds and cash	142		—		—		142
		$10,510		$—		$—		$10,510



	As of October 31, 2015
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Fixed income securities		$5,372		$—		$—		$5,372
Equity securities	5,280		—		—		5,280
Money market funds and cash	115		—		—		115
		$10,767		$—		$—		$10,767

Fixed income securities consist of investments in mutual funds. Equity securities consist of investments in common stocks, mutual funds and exchange traded funds.

The Plan's actual and targeted asset allocations by investment category are as follows:



	As of October 31,
	2016				2015
	Actual		Target		Actual		Target
Fixed income securities	50	%	50	%	50	%	50	%
Equity securities	49	%	50	%	49	%	50	%
Money market funds and cash	1	%	—	%	1	%	—	%
	100	%	100	%	100	%	100	%

OPERATING SEGMENTS (Tables)

12 Months Ended

Oct. 31, 2016

Segment Reporting [Abstract]

Schedule of Segment Reporting Information by Segment [Table Text Block]

Information on the Company’s two operating segments, the FSG and the ETG, for each of the last three fiscal years ended October 31 is as follows (in thousands):



	Segment				Other, Primarily Corporate and Intersegment			Consolidated Totals
	FSG		ETG		Other, Primarily Corporate and Intersegment			Consolidated Totals
Year ended October 31, 2016:
Net sales		$875,870		$511,272		($10,884	)		$1,376,258
Depreciation	12,113		8,030		218			20,361
Amortization	16,590		22,664		662			39,916
Operating income	163,427		126,031		(24,113		)	265,345
Capital expenditures	18,434		11,962		467			30,863
Total assets	878,674		1,017,827		142,974			2,039,475

Year ended October 31, 2015:
Net sales		$809,700		$390,982		($12,034	)		$1,188,648
Depreciation	10,859		6,803		168			17,830
Amortization	13,470		15,945		662			30,077
Operating income	149,798		98,833		(18,975		)	229,656
Capital expenditures	11,737		6,201		311			18,249
Total assets	868,218		746,018		122,151			1,736,387

Year ended October 31, 2014:
Net sales		$762,801		$379,404		($9,894	)		$1,132,311
Depreciation	9,809		7,113		146			17,068
Amortization	10,034		19,993		662			30,689
Operating income	136,480		88,914		(22,006		)	203,388
Capital expenditures	9,437		6,327		646			16,410
Total assets	676,824		703,144		109,246			1,489,214

Schedule of Product Information [Table Text Block]

The following table summarizes the Company’s net sales to external customers by product lines included in each operating segment (in thousands):



	Year ended October 31,
	2016			2015			2014
Flight Support Group:
Aftermarket replacement parts ⁽¹⁾		$405,108			$356,070			$327,416
Repair and overhaul parts and services ⁽²⁾	251,357			258,952			253,717
Specialty products ⁽³⁾	219,405			194,678			181,668
Total net sales		$875,870			$809,700			$762,801

Electronic Technologies Group:
Electronic component parts for defense,
space and aerospace equipment ⁽⁴⁾		$371,297			$255,095			$243,130
Electronic component parts for equipment
in various other industries ⁽⁵⁾	139,975			135,887			136,274
Total net sales		$511,272			$390,982			$379,404

Other, primarily corporate and intersegment		($10,884	)		($12,034	)		($9,894	)

Total consolidated net sales		$1,376,258			$1,188,648			$1,132,311


⁽¹⁾	Includes various jet engine and aircraft component replacement parts.


⁽²⁾	Includes primarily the sale of parts consumed in various repair and overhaul services on selected jet engine and aircraft components, avionics, instruments, composites and flight surfaces of commercial and military aircraft.


⁽³⁾	Includes primarily the sale of specialty components to OEMs such as thermal insulation blankets, renewable /reusable insulation systems, advanced niche components, complex composite assemblies, and expanded foil mesh.

⁽⁴⁾


⁽⁵⁾	Includes various component parts such as electromagnetic and radio interference shielding, high voltage interconnection devices, high voltage advanced power electronics, harsh environment connectivity products, and custom molded cable assemblies.

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

The following table also summarizes the Company’s long-lived assets held within and outside of the United States as of October 31 of the last three fiscal years (in thousands). Long-lived assets consist of net property, plant and equipment.



	2016		2015		2014
Net Sales:
United States of America		$904,670		$785,567		$754,616
Other countries	471,588		403,081		377,695
Total net sales		$1,376,258		$1,188,648		$1,132,311

Long-lived assets:
United States of America		$94,889		$85,253		$84,116
Other countries	26,722		20,417		9,749
Total long-lived assets		$121,611		$105,670		$93,865

COMMITMENTS AND CONTINGENCIES (Tables)

12 Months Ended

Oct. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

Future minimum payments under non-cancelable operating leases for the next five fiscal years and thereafter are estimated to be as follows (in thousands):



Year ending October 31,
2017		$11,787
2018	8,577
2019	6,491
2020	6,063
2021	5,932
Thereafter	18,002
Total minimum lease commitments		$56,852

Schedule of Product Warranty Liability [Table Text Block]

Changes in the Company’s product warranty liability in fiscal 2016 and 2015 are as follows (in thousands):



	Year ended October 31,
	2016			2015
Balances as of beginning of year		$3,203			$4,079
Accruals for warranties	3,025			1,215
Acquired warranty liabilities	—			35
Warranty claims settled	(2,877		)	(2,126		)
Balances as of end of year		$3,351			$3,203

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	12 Months Ended
	Oct. 31, 2016
Building and Building Improvements [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Building and Building Improvements [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	40 years
Leasehold Improvements [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	2 years
Leasehold Improvements [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	20 years
Other Machinery and Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Other Machinery and Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Tooling [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	2 years
Tooling [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2)	12 Months Ended
	Oct. 31, 2016
Customer Relationships [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	6 years
Customer Relationships [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years
Intellectual Property [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years
Intellectual Property [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	22 years
Licensing Agreements [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years
Licensing Agreements [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	17 years
Patents [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	5 years
Patents [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	20 years
Trade Names [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	8 years
Trade Names [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Textuals) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014	Feb. 14, 2014
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment, Depreciation Methods	Depreciation and amortization is generally provided on the straight-line method over the estimated useful lives of the various assets.
Business Combination, Description [Abstract]
Business Acquisition, Transaction Costs	$ 3.2
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Assets, Amortization Method	The Company’s intangible assets subject to amortization are amortized on the straight-line method (except for certain customer relationships amortized on an accelerated method) over the following estimated useful lives
Revenue Recognition [Abstract]
Percent of Revenue from Services Renderred	10.00%
Net Sales Recognized from Percentage-Of-Completion Method	3.00%	4.00%	3.00%
Heico Aerospace [Member]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Percentage of interest owned by noncontrolling shareholders	20.00%			20.00%
Noncontrolling Interest, Ownership Percentage by Parent				80.00%
Lufthansa Technik AG [Member] \| Heico Aerospace [Member]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Percentage of interest owned by noncontrolling shareholders	20.00%
Heico Flight Support Corp [Member] \| Subsidiary One [Member]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Noncontrolling Interest, Ownership Percentage by Parent	80.00%
Heico Flight Support Corp [Member] \| Subsidiary Two [Member]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Noncontrolling Interest, Ownership Percentage by Parent	84.00%
Heico Flight Support Corp [Member] \| Subsidiaries [Member]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Noncontrolling Interest, Ownership Percentage by Parent	80.10%
HEICO Electronic [Member] \| Subsidiary One [Member]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Noncontrolling Interest, Ownership Percentage by Parent	80.10%
HEICO Electronic [Member] \| Subsidiary Two [Member]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Noncontrolling Interest, Ownership Percentage by Parent	80.10%
HEICO Electronic [Member] \| Subsidiary Three [Member]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Noncontrolling Interest, Ownership Percentage by Parent	82.50%
HEICO Electronic [Member] \| Subsidiary Four [Member]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Noncontrolling Interest, Ownership Percentage by Parent	95.90%
HEICO Electronic [Member] \| Subsidiary Five [Member]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Noncontrolling Interest, Ownership Percentage by Parent	78.00%
Heico Aerospace [Member] \| Subsidiary One [Member]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Noncontrolling Interest, Ownership Percentage by Parent	80.10%
Heico Aerospace [Member] \| Subsidiary Two [Member]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Noncontrolling Interest, Ownership Percentage by Parent	82.30%
Heico Aerospace [Member] \| Joint Venture [Member]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Noncontrolling Interest, Ownership Percentage by Parent	84.00%

ACQUISITIONS ACQUISITIONS (Details 1) - Electronic Technologies Group [Member] - Robertson [Member] $ in Thousands	12 Months Ended
	Oct. 31, 2016 USD ($)
Business Acquisition [Line Items]
Cash paid	$ 256,293
Less: cash acquired	(3,271)
Total purchase consideration	$ 253,022

ACQUISITIONS (Details 2) - USD ($) $ in Thousands	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Assets acquired:
Goodwill	$ 865,717	$ 766,639	$ 686,271
Electronic Technologies Group [Member]
Assets acquired:
Goodwill	529,036	$ 429,132	$ 403,864
Electronic Technologies Group [Member] \| Robertson [Member]
Assets acquired:
Goodwill	93,425
Inventories	27,417
Property, plant and equipment	7,476
Accounts receivable	4,973
Other assets	1,884
Total assets acquired, excluding cash	258,275
Liabilities assumed:
Accounts payable	4,606
Accrued expenses	647
Total liabilities assumed	5,253
Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	253,022
Customer Relationships [Member] \| Electronic Technologies Group [Member] \| Robertson [Member]
Assets acquired:
Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	55,100
Intellectual Property [Member] \| Electronic Technologies Group [Member] \| Robertson [Member]
Assets acquired:
Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	39,600
Trade Names [Member] \| Electronic Technologies Group [Member] \| Robertson [Member]
Assets acquired:
Identifiable intangible assets	$ 28,400

ACQUISITIONS ACQUISITIONS (Details 3) - Electronic Technologies Group [Member] - Robertson [Member] $ / shares in Units, $ in Thousands	12 Months Ended
	Oct. 31, 2015 USD ($) $ / shares
Business Acquisition [Line Items]
Pro Forma Revenue	$ 1,275,926
Pro Forma Net income from consolidated operations	162,645
Pro Forma Net Income (Loss) Attributable to HEICO	$ 142,445
Pro Forma Net Income (Loss) Per Share Attributable To Common Shareholders [Abstract]
Pro Forma Earnings Per Share, Basic \| $ / shares	$ 2.13
Pro Forma Earnings Per Share, Diluted \| $ / shares	$ 2.10

ACQUISITIONS ACQUISITIONS (Details 4) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Business Acquisition [Line Items]
Cash paid, net	$ 263,811	$ 166,784	$ 8,737
Additional purchase consideration	0	(204)	(56)
Other Acquisitions [Member]
Business Acquisition [Line Items]
Cash paid	11,000	171,829	6,759
Less: cash acquired	0	(5,062)	0
Cash paid, net	11,000	166,767	6,759
Contingent purchase consideration	1,225	21,355	0
Additional purchase consideration	0	(211)	(56)
Total purchase consideration	$ 12,225	$ 187,911	$ 6,703

ACQUISITIONS ACQUISITIONS (Details 5) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Assets acquired:
Goodwill	$ 865,717	$ 766,639	$ 686,271
Other Acquisitions [Member]
Assets acquired:
Identifiable intangible assets	5,100	102,981	3,400
Goodwill	6,876	88,602	2,552
Inventories	249	18,055	247
Property, plant and equipment	0	16,031	248
Accounts receivable	0	10,719	256
Other assets	0	2,571	12
Total assets acquired, excluding cash	12,225	238,959	6,715
Liabilities assumed:
Deferred income taxes	0	6,788	0
Accounts payable	0	4,845	0
Accrued expenses	0	2,570	12
Other liabilities	0	621	0
Total liabilities assumed	0	14,824	12
Noncontrolling interests in consolidated subsidiaries	0	36,224	0
Net assets acquired, excluding cash	$ 12,225	$ 187,911	$ 6,703

ACQUISITIONS ACQUISITIONS (Details 6) - FY 2015 Acquisition [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Business Acquisition [Line Items]
Pro Forma Revenue	$ 1,244,911	$ 1,228,987
Pro Forma Net income from consolidated operations	163,012	150,412
Pro Forma Net Income (Loss) Attributable to HEICO	$ 140,771	$ 130,539
Pro Forma Net Income (Loss) Per Share Attributable To Common Shareholders [Abstract]
Pro Forma Earnings Per Share, Basic	$ 2.11	$ 1.96
Pro Forma Earnings Per Share, Diluted	$ 2.08	$ 1.94

ACQUISITIONS (Details Textuals) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
ACQUISITIONS (Details Textuals) - USD ($) $ in Thousands	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired									$ 263,811	$ 166,784	$ 8,737
Net sales	$ 363,299	$ 356,084	$ 350,648	$ 306,227	$ 328,672	$ 300,370	$ 291,421	$ 268,185	1,376,258	1,188,648	1,132,311
Net income attributable to HEICO	44,262	$ 42,002	$ 38,657	$ 31,271	38,250	$ 34,369	$ 33,105	$ 27,640	156,192	133,364	121,293
Contingent consideration, liability	18,881				$ 21,405				18,881	21,405
Additional Purchase Consideration Paid											2,000
Business Acquisition, Transaction Costs	$ 3,200								3,200
FY 2015 Acquisition [Member]
Business Acquisition [Line Items]
Net sales									62,900
Net income attributable to HEICO									$ 7,900
Astroseal Products Manufacturing Corp [Member] \| Heico Flight Support Corp [Member]
Business Acquisition [Line Items]
Name of the entity in which interest is owned									Astroseal Products Mfg. Corporation
Date on which the acquirer obtains control of the acquiree									Aug. 31, 2015
Description of the acquired entity									Astroseal manufactures expanded foil mesh, which is integrated into composite aerospace structures for lighting strike protection in fixed and rotary wing aircraft.
Midwest Microwave Solutions [Member] \| HEICO Electronic [Member]
Business Acquisition [Line Items]
Name of the entity in which interest is owned									Midwest Microwave Solutions, Inc.
Date on which the acquirer obtains control of the acquiree									Aug. 31, 2015
Description of the acquired entity									MMS designs, manufactures and sells unique Size, Weight, Power and Cost (SWAP-C) optimized Communications and Electronic Intercept Receivers and Tuners for military and intelligence applications.
Percentage of interest acquired in the subsidiary	80.10%								80.10%
Percentage of interest owned by noncontrolling shareholders	19.90%								19.90%
Aerospace & Commercial Technologies [Member] \| Heico Flight Support Corp [Member]
Business Acquisition [Line Items]
Name of the entity in which interest is owned									Aerospace & Commercial Technologies, LLC
Date on which the acquirer obtains control of the acquiree									Aug. 31, 2015
Description of the acquired entity									ACT is a provider of products and services necessary to maintain up-to-date F-16 fighter aircraft operational capabilities.
Percentage of interest acquired in the subsidiary	80.10%								80.10%
Percentage of interest owned by noncontrolling shareholders	19.90%								19.90%
TEP [Member] \| Heico Flight Support Corp [Member]
Business Acquisition [Line Items]
Name of the entity in which interest is owned									Thermal Energy Products, Inc.
Date on which the acquirer obtains control of the acquiree									May 31, 2015
Description of the acquired entity									TEP engineers, designs and manufactures removable/reusable insulation systems for industrial, commercial, aerospace and defense applications.
Harter [Member] \| Heico Flight Support Corp [Member]
Business Acquisition [Line Items]
Name of the entity in which interest is owned									Harter Aerospace, LLC
Date on which the acquirer obtains control of the acquiree									Jan. 31, 2015
Description of the acquired entity									Harter is a globally recognized component and accessory maintenance, repair, and overhaul (MRO) station specializing in commercial aircraft accessories, including thrust reverse actuation systems and pneumatics, and electromechanical components.
Percentage of interest acquired in the subsidiary	80.10%								80.10%
Percentage of interest owned by noncontrolling shareholders	19.90%								19.90%
Aeroworks [Member] \| Heico Flight Support Corp [Member]
Business Acquisition [Line Items]
Name of the entity in which interest is owned									Aeroworks International Holding B.V.
Date on which the acquirer obtains control of the acquiree									Jan. 31, 2015
Description of the acquired entity									Aeroworks, which is headquartered in the Netherlands and maintains a significant portion of its production facilities in Thailand and Laos, is a manufacturer of both composite and metal parts used primarily in aircraft interior applications, including seating, galleys, lavatories, doors, and overhead bins.
Percentage of interest acquired in the subsidiary	80.00%								80.00%
Percentage of interest owned by noncontrolling shareholders	20.00%								20.00%
Quest Aviation [Member] \| Heico Flight Support Corp [Member]
Business Acquisition [Line Items]
Name of the entity in which interest is owned									Quest Aviation Supply, Inc.
Date on which the acquirer obtains control of the acquiree									Jun. 30, 2014
Description of the acquired entity									Quest Aviation is a niche supplier of parts to repair thrust reversers on various aircraft engines.
Electronic Technologies Group [Member]
Business Acquisition [Line Items]
Net sales									$ 511,272	$ 390,982	$ 379,404
Electronic Technologies Group [Member] \| Robertson [Member]
Business Acquisition [Line Items]
Name of the entity in which interest is owned									Robertson Fuel Systems, LLC
Cash Acquired from Acquisition									$ 3,271
Date on which the acquirer obtains control of the acquiree									Jan. 11, 2016
Net sales									$ 84,100
Net income attributable to HEICO									$ 12,300
Description of the acquired entity									Robertson designs and produces mission-extending, crashworthy and ballistically self-sealing auxiliary fuel systems for military rotorcraft.
Business Acquisition, Transaction Costs	$ 3,100								$ 3,100
Electronic Technologies Group [Member] \| Robertson [Member] \| Customer Relationships [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life									15 years
Electronic Technologies Group [Member] \| Robertson [Member] \| Intellectual Property [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life									22 years
Electronic Technologies Group [Member] \| Certain Assets [Member]
Business Acquisition [Line Items]
Date on which the acquirer obtains control of the acquiree									Dec. 31, 2015
Description of the acquired entity									designs and manufactures underwater locator beacons used to locate aircraft cockpit voice recorders, flight data recorders, marine ship voyage recorders and other devices which have been submerged under water
Contingent consideration, liability	1,200								$ 1,200
Amount of contingent purchase consideration, the company could be required to pay	$ 2,000								$ 2,000

SELECTED FINANCIAL STATEMENT INFORMATION, Accounts Receivable (Details) - USD ($) $ in Thousands	Oct. 31, 2016	Oct. 31, 2015
Accounts receivable	$ 205,386	$ 183,631
Less: Allowance for doubtful accounts	(3,159)	(2,038)
Accounts receivable, net	$ 202,227	$ 181,593

SELECTED FINANCIAL STATEMENT INFORMATION, Costs and Estimated Earnings on Uncompleted Percentage-of-Completion Contracts (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Costs incurred on uncompleted contracts	$ 19,086	$ 22,645
Estimated earnings	13,887	16,116
Total cost incurred and estimated earnings on uncompleted percentage-of completed contracts	32,973	38,761
Less: Billings to date	(39,142)	(36,442)
Unbilled Contracts Receivable		2,319
Billings in Excess of Cost and Estimated Earnings	6,169
Included in the accompanying Consolidated Balance Sheets under the following captions:
Accounts receivable, net (costs and estimated earnings in excess of billings)	4,839	6,263
Accrued expenses and other current liabilities (billings in excess of costs and estimated earnings)	(11,008)	(3,944)
Unbilled Contracts Receivable		$ 2,319
Billings in Excess of Cost and Estimated Earnings	$ 6,169

SELECTED FINANCIAL STATEMENT INFORMATION, Inventories (Details) - USD ($) $ in Thousands	Oct. 31, 2016	Oct. 31, 2015
Finished products	$ 131,008	$ 119,262
Work in process	36,076	32,201
Materials, parts, assemblies and supplies	117,153	89,739
Contracts-in-process	3,253	4,521
Less: Billings to date	(1,188)	(2,206)
Inventories, net of valuation reserves	$ 286,302	$ 243,517

SELECTED FINANCIAL STATEMENT INFORMATION, Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Property, Plant and Equipment [Line Items]
Land	$ 5,090	$ 5,060
Buildings and improvements	79,205	70,626
Machinery, equipment and tooling	171,717	152,022
Construction in progress	10,453	4,668
Property, Plant and Equipment, Gross	266,465	232,376
Less: Accumulated depreciation and amortization	(144,854)	(126,706)
Property, plant and equipment, net	$ 121,611	$ 105,670	$ 93,865

SELECTED FINANCIAL STATEMENT INFORMATION, Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Oct. 31, 2016	Oct. 31, 2015
Accrued employee compensation and related payroll taxes	$ 67,660	$ 53,238
Deferred revenue	32,135	16,498
Accrued customer rebates and credits	11,881	8,072
Accrued additional purchase consideration	6,918	6,859
Other Liabilities, Current	17,459	15,488
Accrued expenses and other current liabilities	$ 136,053	$ 100,155

- Definition

The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income.

+ References + Details

SELECTED FINANCIAL STATEMENT INFORMATION SELECTED FINANCIAL STATEMENT INFORMATION, Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Balance Start	$ (25,080)
Unrealized gain/(loss)	(308)	$ (17,651)	$ (8,433)
Accumulated Other Comprehensive Income (Loss), Balance End	(25,326)	(25,080)
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Balance Start	(24,368)	(8,348)
Unrealized gain/(loss)	415	(16,020)
Accumulated Other Comprehensive Income (Loss), Balance End	(23,953)	(24,368)	(8,348)
Pension Benefit Obligation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Balance Start	(712)	59
Unrealized gain/(loss)	(661)	(771)
Accumulated Other Comprehensive Income (Loss), Balance End	(1,373)	(712)	59
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Balance Start	(25,080)	(8,289)
Unrealized gain/(loss)	(246)	(16,791)
Accumulated Other Comprehensive Income (Loss), Balance End	$ (25,326)	$ (25,080)	$ (8,289)

SELECTED FINANCIAL STATEMENT INFORMATION (Details Textuals) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Property, plant and equipment, net	$ 121,611	$ 105,670	$ 93,865
Depreciation and amortization	60,277	47,907	47,757
Assets under capital lease	4,800	3,700
Assets under capital lease, accumulated depreciation	900	700
Total customer rebates and credits deducted within net sales	$ 10,800	4,700	8,300
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	50.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	6.00%
Contributions to the plan charged	$ 6,800	5,700	5,300
Deferred compensation plans	93,202	81,576
Costs in Excess of Billings, Current	4,839	6,263
Billings in Excess of Cost, Current	11,008	3,944
Corporate Owned Life Insurance [Member]
Deferred compensation plans	88,500	77,100
Other Deferred Compensation Plan [Member]
Employee related deferred compensation plans, specified as other long-term liabilities	4,700	4,500
Leadership Compensation Plan [Member]
Employee related deferred compensation plans, specified as other long-term liabilities	87,900	76,200
Tooling [Member]
Property, plant and equipment, net	7,700	6,500
Depreciation and amortization	2,900	2,400	2,400
Property, Plant and Equipment, Exclusive of Tooling [Member]
Depreciation and amortization	$ 20,400	$ 17,800	$ 17,100

GOODWILL AND OTHER INTANGIBLE ASSETS, Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Goodwill [Roll Forward]
Opening Balances	$ 766,639	$ 686,271
Goodwill acquired	100,301	89,144
Foreign currency translation adjustments	(681)	(8,776)
Adjustments to goodwill	(542)
Ending Balances	865,717	766,639
Flight Support Group [Member]
Goodwill [Roll Forward]
Opening Balances	337,507	282,407
Goodwill acquired	0	56,441
Foreign currency translation adjustments	(256)	(1,341)
Adjustments to goodwill	(570)
Ending Balances	336,681	337,507
Electronic Technologies Group [Member]
Goodwill [Roll Forward]
Opening Balances	429,132	403,864
Goodwill acquired	100,301	32,703
Foreign currency translation adjustments	(425)	(7,435)
Adjustments to goodwill	28
Ending Balances	$ 529,036	$ 429,132

GOODWILL AND OTHER INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	Oct. 31, 2016	Oct. 31, 2015
Amortizing Assets:
Customer Relationships, Gross	$ 248,271	$ 190,450
Intellectual Property, Gross	139,817	98,143
License, Gross	6,559	4,200
Noncompete Agreements, Gross	811	914
Patents, Gross	779	746
Trade Names, Gross	466	166
Gross Carrying Amount	396,703	294,619
Accumulated Amortization	(125,813)	(89,654)
Amortizing Net Carrying Amount	270,890	204,965
Non-Amortizing Assets:
Indefinite-Lived Trade Names	95,973	67,628
Total Gross Carrying Amount	492,676	362,247
Total Net Carrying Amount	366,863	272,593
Customer Relationships [Member]
Amortizing Assets:
Accumulated Amortization	(88,829)	(63,461)
Amortizing Net Carrying Amount	159,442	126,989
Intellectual Property [Member]
Amortizing Assets:
Accumulated Amortization	(33,291)	(22,912)
Amortizing Net Carrying Amount	106,526	75,231
Licensing Agreements [Member]
Amortizing Assets:
Accumulated Amortization	(2,325)	(1,882)
Amortizing Net Carrying Amount	4,234	2,318
Noncompete Agreements [Member]
Amortizing Assets:
Accumulated Amortization	(811)	(914)
Amortizing Net Carrying Amount	0	0
Patents [Member]
Amortizing Assets:
Accumulated Amortization	(480)	(447)
Amortizing Net Carrying Amount	299	299
Trade Names [Member]
Amortizing Assets:
Accumulated Amortization	(77)	(38)
Amortizing Net Carrying Amount	$ 389	$ 128

GOODWILL AND OTHER INTANGIBLE ASSETS (Details Textuals) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Acquired Indefinite-lived Intangible Assets [Line Items]
Amortization expense related to intangible assets	$ 36.4	$ 27.0	$ 27.7
Estimated Amortization expense related to intangible assets, year one	36.6
Estimated Amortization expense related to intangible assets, year two	34.6
Estimated Amortization expense related to intangible assets, year three	32.4
Estimated Amortization expense related to intangible assets, year four	29.8
Estimated Amortization expense related to intangible assets, year five	27.2
Estimated Amortization expense related to intangible assets, year, there after	110.3
FY 2015 Acquisition [Member]
Acquired Indefinite-lived Intangible Assets [Line Items]
Goodwill recognized expected tax deductible amount	$ 60.0

LONG-TERM DEBT (Details) - USD ($) $ in Thousands	Oct. 31, 2016	Oct. 31, 2015
Borrowings under revolving credit facility	$ 455,083	$ 365,203
Capital leases and notes payable	3,142	2,395
Total debt and capital leases	458,225	367,598
Less: Current maturities of long-term debt	(411)	(357)
Long-term debt, net of current maturities	$ 457,814	$ 367,241

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References + Details

LONG-TERM DEBT, Future Lease Payments (Details) $ in Thousands	Oct. 31, 2016 USD ($)
Lease payments in year one	$ 554
Lease payments in year two	537
Lease payments in year three	538
Lease payments in year four	501
Lease payments in year five	497
Thereafter	1,107
Total minimum lease payments	3,734
Less: amount representing interest	(592)
Present value of minimum lease payments	$ 3,142

LONG-TERM DEBT (Details Textuals) $ in Thousands, € in Millions	1 Months Ended		12 Months Ended
	Nov. 30, 2013	Dec. 31, 2011 USD ($)	Oct. 31, 2016 USD ($)	Oct. 31, 2015 USD ($)	Oct. 31, 2015 EUR (€)
Debt Instrument [Line Items]
Long-term Line of Credit			$ 455,083	$ 365,203
Credit Facility [Abstract]
Credit facility, interest rate description			Advances under the Credit Facility accrue interest at the Company’s choice of the “Base Rate” or the London Interbank Offered Rate (“LIBOR”) plus the applicable margin (based on the Company’s ratio of total funded debt to earnings before interest, taxes, depreciation and amortization, noncontrolling interests and non-cash charges, or “leverage ratio”). The Base Rate is the highest of (i) the Prime Rate; (ii) the Federal Funds rate plus .50% per annum; and (iii) the Adjusted LIBO Rate determined on a daily basis for an Interest Period of one month plus 1.00% per annum, as such capitalized terms are defined in the Credit Facility.
Minimum [Member]
Credit Facility [Abstract]
Credit facility unused capacity, commitment fee percentage			0.125%
Maximum [Member]
Credit Facility [Abstract]
Credit facility unused capacity, commitment fee percentage			0.35%
London Interbank Offered Rate (LIBOR) [Member] \| Minimum [Member]
Credit Facility [Abstract]
Credit facility interest rate range			0.75%
London Interbank Offered Rate (LIBOR) [Member] \| Maximum [Member]
Credit Facility [Abstract]
Credit facility interest rate range			2.25%
Base Rate [Member] \| Minimum [Member]
Credit Facility [Abstract]
Credit facility interest rate range			0.00%
Base Rate [Member] \| Maximum [Member]
Credit Facility [Abstract]
Credit facility interest rate range			1.25%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Weighted average interest rate			1.60%	1.30%	1.30%
Line of Credit Facility, Initiation Date		Dec. 31, 2011
Credit Facility [Abstract]
Credit Facility, Current Borrowing Capacity		$ 670,000
Amended Revolving Credit Facility1 [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Initiation Date	Nov. 30, 2013
Credit Facility [Abstract]
Credit Facility, Expiration Date			Dec. 31, 2018
Credit Facility, Current Borrowing Capacity			$ 800,000
Line of Credit Facility Change in Borrowing Capacity			200,000
Credit Facility, Maximum Borrowing Capacity			1,000,000
Foreign Line of Credit [Member]
Credit Facility [Abstract]
Credit Facility, Maximum Borrowing Capacity			50,000
Euro Member Countries, Euro \| Foreign Line of Credit [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 35,100		€ 32

INCOME TAXES INCOME TAXES, Domestic and Foreign Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Income Tax Disclosure [Abstract]
Domestic	$ 227,927	$ 206,612	$ 185,842
Foreign	29,123	18,352	12,730
Income before taxes and noncontrolling interests	$ 257,050	$ 224,964	$ 198,572

INCOME TAXES, Current and Deferred Expense Components (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Current:
Federal	$ 75,261	$ 65,857	$ 63,264
State	7,463	8,559	10,145
Foreign	7,370	4,064	3,136
Current income tax expense	90,094	78,480	76,545
Deferred:
Federal	(5,979)	(4,459)	(14,000)
State	(2,587)	(1,907)	(2,871)
Foreign	(628)	(714)	126
Deferred Income Tax Expense (Benefit)	(9,194)	(7,080)	(16,745)
Income tax expense	$ 80,900	$ 71,400	$ 59,800

INCOME TAXES, Rate Reconciliation (Details)	12 Months Ended
INCOME TAXES, Rate Reconciliation (Details)	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Federal statutory income tax rate	35.00%	35.00%	35.00%
State taxes, less applicable federal income tax reduction	1.70%	2.40%	2.90%
Net tax benefit on qualified research and development activities	(2.70%)	(1.90%)	(1.20%)
Net tax benefit on qualified domestic production activities	(1.30%)	(1.20%)	(1.60%)
Foreign taxes, where permanently reinvested outside of the U.S.	(0.80%)	(0.80%)	(0.00%)
Net tax benefit on noncontrolling interests' share of income	(0.70%)	(1.30%)	(1.00%)
Nontaxable reduction in accrued contingent consideration	(0.00%)	(0.20%)	(3.40%)
Net tax benefit on corporate owned life insurance policies	(0.10%)	0.10%	(0.60%)
Other, net	0.40%	(0.40%)	0.00%
Effective tax rate	31.50%	31.70%	30.10%

INCOME TAXES, Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Oct. 31, 2016	Oct. 31, 2015
Deferred tax assets:
Deferred compensation liability	$ 36,134	$ 31,520
Inventories	27,969	24,912
Share-based compensation	11,338	9,333
Bonus accrual	4,744	3,791
Vacation accrual	2,127	1,836
R and D carryforward and credit	2,057	1,826
Customer rebates accrual	1,917	1,236
Deferred revenue	1,365	2,005
Other	8,489	7,450
Deferred Tax Assets, Gross	96,140	83,909
Deferred tax liabilities:
Goodwill and other intangible assets	(150,185)	(148,448)
Property, plant and equipment	(8,291)	(7,667)
Other	(2,156)	(2,005)
Total deferred tax liabilities	(160,632)	(158,120)
Net deferred tax liabilities	$ (64,492)	$ (74,211)

INCOME TAXES, Deferred Tax Liability Balance Sheet Classifications (Details) - USD ($) $ in Thousands	Oct. 31, 2016	Oct. 31, 2015
Current asset	$ 41,063	$ 35,530
Long-term asset	407	847
Long-term liability	(105,962)	(110,588)
Net deferred tax liabilities	$ (64,492)	$ (74,211)

INCOME TAXES, Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balances as of beginning of year	$ 787	$ 879
Increases related to current year tax positions	524	279
Increases related to prior year tax positions	521	30
Decreases related to prior year tax positions	(14)	(80)
Settlements	0	(118)
Lapse of statutes of limitations	(216)	(203)
Balances as of end of year	$ 1,602	$ 787

INCOME TAXES (Details Textuals) - USD ($) $ in Thousands	12 Months Ended
INCOME TAXES (Details Textuals) - USD ($) $ in Thousands	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Income Tax Disclosure [Abstract]
Effective Income Tax Rate, Continuing Operations	31.50%	31.70%	30.10%
Net deferred tax liability	$ (64,492)	$ (74,211)
Deferred Income Tax Expense (Benefit)	(9,194)	(7,080)	$ (16,745)
Gross unrecognized tax benefits related to uncertain tax positions	1,602	787	$ 879
Unrecognized tax benefits that would impact effective tax rate	$ 1,000	$ 500

FAIR VALUE MEASUREMENTS, Assets and Liabilities, Measured on Recurring Basis (Details) - USD ($)	Oct. 31, 2016	Oct. 31, 2015
Assets [Abstract]
Deferred Compensation Plan Assets	$ 93,202,000	$ 81,576,000
Liabilities [Abstract]
Contingent consideration, liability	18,881,000	21,405,000
Fair Value, Inputs, Level 1 [Member]
Assets [Abstract]
Deferred Compensation Plan Assets	7,148,000	8,288,000
Liabilities [Abstract]
Contingent consideration, liability	0	0
Fair Value, Inputs, Level 2 [Member]
Assets [Abstract]
Deferred Compensation Plan Assets	86,054,000	73,288,000
Liabilities [Abstract]
Contingent consideration, liability	0	0
Fair Value, Inputs, Level 3 [Member]
Assets [Abstract]
Deferred Compensation Plan Assets	0	0
Liabilities [Abstract]
Contingent consideration, liability	18,881,000	21,405,000
Corporate Owned Life Insurance [Member]
Assets [Abstract]
Deferred Compensation Plan Assets	86,004,000	73,238,000
Corporate Owned Life Insurance [Member] \| Fair Value, Inputs, Level 1 [Member]
Assets [Abstract]
Deferred Compensation Plan Assets	0	0
Corporate Owned Life Insurance [Member] \| Fair Value, Inputs, Level 2 [Member]
Assets [Abstract]
Deferred Compensation Plan Assets	86,004,000	73,238,000
Corporate Owned Life Insurance [Member] \| Fair Value, Inputs, Level 3 [Member]
Assets [Abstract]
Deferred Compensation Plan Assets	0	0
Money Market Funds [Member]
Assets [Abstract]
Deferred Compensation Plan Assets	2,515,000	3,832,000
Money Market Funds [Member] \| Fair Value, Inputs, Level 1 [Member]
Assets [Abstract]
Deferred Compensation Plan Assets	2,515,000	3,832,000
Money Market Funds [Member] \| Fair Value, Inputs, Level 2 [Member]
Assets [Abstract]
Deferred Compensation Plan Assets	0	0
Money Market Funds [Member] \| Fair Value, Inputs, Level 3 [Member]
Assets [Abstract]
Deferred Compensation Plan Assets	0	0
Equity Securities [Member]
Assets [Abstract]
Deferred Compensation Plan Assets	1,832,000	1,845,000
Equity Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Assets [Abstract]
Deferred Compensation Plan Assets	1,832,000	1,845,000
Equity Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Assets [Abstract]
Deferred Compensation Plan Assets	0	0
Equity Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Assets [Abstract]
Deferred Compensation Plan Assets	0	0
Equity Funds [Member]
Assets [Abstract]
Deferred Compensation Plan Assets	1,758,000	1,665,000
Equity Funds [Member] \| Fair Value, Inputs, Level 1 [Member]
Assets [Abstract]
Deferred Compensation Plan Assets	1,758,000	1,665,000
Equity Funds [Member] \| Fair Value, Inputs, Level 2 [Member]
Assets [Abstract]
Deferred Compensation Plan Assets	0	0
Equity Funds [Member] \| Fair Value, Inputs, Level 3 [Member]
Assets [Abstract]
Deferred Compensation Plan Assets	0	0
Other Defined Deferred Compensation Plan [Member]
Assets [Abstract]
Deferred Compensation Plan Assets	1,093,000	996,000
Other Defined Deferred Compensation Plan [Member] \| Fair Value, Inputs, Level 1 [Member]
Assets [Abstract]
Deferred Compensation Plan Assets	1,043,000	946,000
Other Defined Deferred Compensation Plan [Member] \| Fair Value, Inputs, Level 2 [Member]
Assets [Abstract]
Deferred Compensation Plan Assets	50,000	50,000
Other Defined Deferred Compensation Plan [Member] \| Fair Value, Inputs, Level 3 [Member]
Assets [Abstract]
Deferred Compensation Plan Assets	$ 0	$ 0

FAIR VALUE MEASUREMENTS FAIR VALUE MEASUREMENTS, Contingent Consideration Level 3 Valuation Inputs (Details) - Fair Value, Inputs, Level 3 [Member]	12 Months Ended
	Oct. 31, 2016
FY 2016 Acquisition [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	3.40%
FY 2016 Acquisition [Member] \| Minimum [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Negative Long-term Revenue Growth Rate	(3.00%)
FY 2016 Acquisition [Member] \| Maximum [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair Value Inputs, Long-term Revenue Growth Rate	11.00%
FY 2015 Acquisition [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	1.70%
FY 2015 Acquisition [Member] \| Minimum [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair Value Inputs, Long-term Revenue Growth Rate	2.00%
FY 2015 Acquisition [Member] \| Maximum [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair Value Inputs, Long-term Revenue Growth Rate	20.00%

FAIR VALUE MEASUREMENTS, Assets and Liabilities, Measured at Fair Value Using Unobservable Inputs (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	$ (3,063)	$ (293)
Liabilities [Abstract]
Total liabilities	892,258	751,834
Fair Value, Inputs, Level 3 [Member]
Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Liabilities, Opening Balance	21,405	1,184
Contingent purchase consideration	1,225	21,355
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	(6,960)
Contingent consideration related to acquisition	3,063	293
Liabilities, Ending Balance	18,881	21,405
Liabilities [Abstract]
Accrued Liabilities, Current	6,918
Other Liabilities, Noncurrent	11,963
Total liabilities	18,881
Foreign Currency Gain (Loss) [Member] \| Fair Value, Inputs, Level 3 [Member]
Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Fair Value, Liabilities Measured on Recurring Basis, Change in Unrealized Gain (Loss)	$ 148	$ (1,427)

FAIR VALUE MEASUREMENTS FAIR VALUE MEASUREMENTS, Assets and Liabilities and Related Impairment Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Schedule of Impairment Charges, Nonfinancial Assets and Liabilities [Line Items]
Finite-Lived Intangible Assets, Net	$ 270,890	$ 204,965
Indefinite-Lived Trade Names	95,973	67,628
Impairment of Intangible Assets (Excluding Goodwill)	0	0	$ (15,000)
Customer Relationships [Member]
Schedule of Impairment Charges, Nonfinancial Assets and Liabilities [Line Items]
Finite-Lived Intangible Assets, Net	159,442	126,989
Intellectual Property [Member]
Schedule of Impairment Charges, Nonfinancial Assets and Liabilities [Line Items]
Finite-Lived Intangible Assets, Net	$ 106,526	$ 75,231
Electronic Technologies Group [Member]
Schedule of Impairment Charges, Nonfinancial Assets and Liabilities [Line Items]
Impairment of Intangible Assets (Excluding Goodwill)			(15,000)
Electronic Technologies Group [Member] \| Customer Relationships [Member]
Schedule of Impairment Charges, Nonfinancial Assets and Liabilities [Line Items]
Impairment of Intangible Assets, Finite-lived			(11,200)
Finite-Lived Intangible Assets, Net			19,366
Electronic Technologies Group [Member] \| Intellectual Property [Member]
Schedule of Impairment Charges, Nonfinancial Assets and Liabilities [Line Items]
Impairment of Intangible Assets, Finite-lived			(1,900)
Finite-Lived Intangible Assets, Net			2,302
Trade Names [Member] \| Electronic Technologies Group [Member]
Schedule of Impairment Charges, Nonfinancial Assets and Liabilities [Line Items]
Indefinite Lived Intangible Assets, Carrying Amount			10,000
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)			(1,900)
Fair Value, Inputs, Level 3 [Member] \| Electronic Technologies Group [Member] \| Customer Relationships [Member]
Schedule of Impairment Charges, Nonfinancial Assets and Liabilities [Line Items]
Finite-Lived Intangible Assets, Net			8,166
Fair Value, Inputs, Level 3 [Member] \| Electronic Technologies Group [Member] \| Intellectual Property [Member]
Schedule of Impairment Charges, Nonfinancial Assets and Liabilities [Line Items]
Finite-Lived Intangible Assets, Net			402
Fair Value, Inputs, Level 3 [Member] \| Trade Names [Member] \| Electronic Technologies Group [Member]
Schedule of Impairment Charges, Nonfinancial Assets and Liabilities [Line Items]
Indefinite-Lived Trade Names			$ 8,100

FAIR VALUE MEASUREMENTS FAIR VALUE MEASUREMENTS, Level 3 valuation inputs (2) (Details 5)	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2014
Intellectual Property [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Annual attrition rate		20.00%
Fair Value, Inputs, Level 3 [Member] \| Customer Relationships [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Measurements, Valuation Techniques	Excess Earnings
Fair Value, Inputs, Level 3 [Member] \| Intellectual Property [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Measurements, Valuation Techniques	Relief from Royalty
Fair Value Inputs, Discount Rate		19.00%
Fair Value Inputs, Royalty Rate		6.00%
Fair Value, Inputs, Level 3 [Member] \| Trade Names [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Measurements, Valuation Techniques	Relief from Royalty
Minimum [Member] \| Fair Value, Inputs, Level 3 [Member] \| Customer Relationships [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate		15.00%
Annual attrition rate		25.00%
Minimum [Member] \| Fair Value, Inputs, Level 3 [Member] \| Trade Names [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate		14.00%
Fair Value Inputs, Royalty Rate		1.00%
Maximum [Member] \| Fair Value, Inputs, Level 3 [Member] \| Customer Relationships [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate		19.00%
Annual attrition rate		30.00%
Maximum [Member] \| Fair Value, Inputs, Level 3 [Member] \| Trade Names [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate		18.00%
Fair Value Inputs, Royalty Rate		2.50%

FAIR VALUE MEASUREMENTS (Details Textuals) $ in Thousands, € in Millions	12 Months Ended
	Oct. 31, 2016 USD ($)	Oct. 31, 2015 USD ($)	Oct. 31, 2014 USD ($)	Oct. 31, 2016 EUR (€)	Oct. 31, 2013 USD ($)	Oct. 31, 2012 USD ($)
Business Acquisition, Contingent Consideration [Line Items]
Contingent consideration, liability	$ 18,881	$ 21,405
Impairment of intangible assets	0	0	$ (15,000)
Change in value of contingent consideration	3,063	293
Fair Value, Inputs, Level 3 [Member]
Business Acquisition, Contingent Consideration [Line Items]
Contingent consideration, liability	18,881	21,405
Contingent consideration related to acquisition	3,063	$ 293
Change in value of contingent consideration	6,960
Business Combination, Contingent Consideration, Liability, Current	$ 6,918
Fair Value, Inputs, Level 3 [Member] \| FY 2016 Acquisition [Member]
Business Acquisition, Contingent Consideration [Line Items]
Fair Value Inputs, Discount Rate	3.40%
Fair Value, Inputs, Level 3 [Member] \| FY 2016 Acquisition [Member] \| Maximum [Member]
Business Acquisition, Contingent Consideration [Line Items]
Fair Value Inputs, Long-term Revenue Growth Rate	11.00%
Fair Value, Inputs, Level 3 [Member] \| FY 2015 Acquisition [Member]
Business Acquisition, Contingent Consideration [Line Items]
Fair Value Inputs, Discount Rate	1.70%
Fair Value, Inputs, Level 3 [Member] \| FY 2015 Acquisition [Member] \| Minimum [Member]
Business Acquisition, Contingent Consideration [Line Items]
Fair Value Inputs, Long-term Revenue Growth Rate	2.00%
Fair Value, Inputs, Level 3 [Member] \| FY 2015 Acquisition [Member] \| Maximum [Member]
Business Acquisition, Contingent Consideration [Line Items]
Fair Value Inputs, Long-term Revenue Growth Rate	20.00%
Electronic Technologies Group [Member]
Business Acquisition, Contingent Consideration [Line Items]
Impairment of intangible assets			(15,000)
Electronic Technologies Group [Member] \| FY 2016 Acquisition [Member]
Business Acquisition, Contingent Consideration [Line Items]
Amount of contingent purchase consideration, the company could be required to pay	$ 2,000
Contingent consideration, liability	1,300
Electronic Technologies Group [Member] \| FY 2013 Acquisition [Member] \| Tranche One [Member]
Business Acquisition, Contingent Consideration [Line Items]
Contingent consideration, liability					$ 7,000
Contingent Consideration Arrangements, Per Year Amount					20,000
Electronic Technologies Group [Member] \| FY 2013 Acquisition [Member] \| Tranche Two [Member]
Business Acquisition, Contingent Consideration [Line Items]
Contingent consideration, liability			1,200		13,700
Change in value of contingent consideration			$ 12,500
Contingent Consideration Arrangements, Per Year Amount					30,000
Electronic Technologies Group [Member] \| FY12 Acquisitions [Member] \| Tranche One [Member]
Business Acquisition, Contingent Consideration [Line Items]
Contingent consideration, liability					$ 8,600
Contingent Consideration Arrangements, Per Year Amount						$ 14,600
Euro Member Countries, Euro \| Flight Support Group [Member] \| FY 2015 Acquisition [Member]
Business Acquisition, Contingent Consideration [Line Items]
Amount of contingent purchase consideration, the company could be required to pay \| €				€ 24.4
Contingent consideration, liability	17,600			16.1
Contingent Consideration Arrangements, Per Year Amount \| €				€ 6.1
Business Combination, Contingent Consideration, Liability, Current	$ 7,000

SHAREHOLDERS' EQUITY (Details Textuals) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended	12 Months Ended
	Feb. 14, 2014	Jan. 31, 2014	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Stock repurchase program, number of shares authorized to be repurchased (in shares)			2,501,813
Dividends Payable, Date to be Paid		Jan. 31, 2014
Cash dividends per share (in dollars per share)			$ 0.160	$ 0.140	$ 0.470
Cash dividends				$ 27.2
Special Dividend [Member]
Cash dividends per share (in dollars per share)		$ 0.35
Regular Semi-Annual Dividend [Member]
Cash dividends per share (in dollars per share)		$ 0.06
Heico Aerospace [Member]
Business Acquisition, Effective Date of Acquisition	Feb. 14, 2014
Percentage of interest acquired in the subsidiary	20.00%
Noncontrolling Interest, Ownership Percentage by Parent	80.00%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	20.00%		20.00%
Net assets acquired, excluding cash	$ 67.4

SHARE-BASED COMPENSATION, Share-based Activity (Details) - $ / shares shares in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Shares Available for Grant [Roll Forward]
Opening Balance Outstanding Shares (Shares Available For Grant)	1,326	1,617	1,840
Shares approved by Shareholders (Shares Available for Grant)	2,700
Granted (Available for Grant)	(300)	(291)	(161)
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period			(62)
Cancelled (Available for Grant)	6
Ending Balance Outstanding Shares (Shares Available For Grant)	1,032	1,326	1,617
Shares Outstanding [Roll Forward]
Outstanding (Shares Under Option)	3,335	3,264	3,142
Granted (Shares Under Option)	300	291	161
Exercised (Shares Under Option)	(291)	(220)	(39)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period	(6)
Outstanding (Shares Under Option)	3,338	3,335	3,264
Weighted Average Exercise Price [Roll Forward]
Outstanding (in dollars per share)	$ 25.52	$ 22.59	$ 21.48
Granted (in dollars per share)	46.05	51.85	43.37
Exercised (in dollars per share)	20.41	16.85	18.36
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price	36.37
Outstanding (in dollars per share)	$ 27.79	$ 25.52	$ 22.59

SHARE-BASED COMPENSATION, Options Outstanding and Exercisable (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Number Outstanding (in shares)	3,338	3,335	3,264	3,142
Outstanding Weighted Average Exercise Price (in dollars per share)	$ 27.79	$ 25.52	$ 22.59	$ 21.48
Outstanding Weighted Average Contractual Life (in years)	5 years 2 months 12 days
Outstanding Aggregated Intrinsic Value (in dollars)	$ 120,198
Number Exercisable (in shares)	2,362
Exercisable Weighted Average Exercise Price (in dollars per share)	$ 21.95
Exercisable Weighted Average Contractual Life (in years)	4 years 1 month 6 days
Exercisable Aggregate Intrinsic Value (in dollars)	$ 100,810
Heico Common Stock [Member]
Number Outstanding (in shares)	1,676
Outstanding Weighted Average Exercise Price (in dollars per share)	$ 25.08
Outstanding Weighted Average Contractual Life (in years)	4 years 4 months
Outstanding Aggregated Intrinsic Value (in dollars)	$ 71,196
Number Exercisable (in shares)	1,446
Exercisable Weighted Average Exercise Price (in dollars per share)	$ 21.05
Exercisable Weighted Average Contractual Life (in years)	3 years 7 months 7 days
Exercisable Aggregate Intrinsic Value (in dollars)	$ 67,257
Common Class A [Member]
Number Outstanding (in shares)	1,662
Outstanding Weighted Average Exercise Price (in dollars per share)	$ 30.52
Outstanding Weighted Average Contractual Life (in years)	6 years
Outstanding Aggregated Intrinsic Value (in dollars)	$ 49,002
Number Exercisable (in shares)	916
Exercisable Weighted Average Exercise Price (in dollars per share)	$ 23.37
Exercisable Weighted Average Contractual Life (in years)	4 years 9 months 18 days
Exercisable Aggregate Intrinsic Value (in dollars)	$ 33,553

SHARE-BASED COMPENSATION, Information on Options Exercised (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Proceeds from stock option exercises	$ 5,924	$ 3,673	$ 708
Tax benefit from stock option exercises	868	1,402	93
Intrinsic value of stock option exercises	$ 9,751	$ 6,958	$ 929

SHARE-BASED COMPENSATION, Assumptions for Option Grants Fair Value Calculation (Details) - $ / shares	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Common Class A [Member]
Expected stock price volatility	32.52%	36.51%	38.04%
Risk-free interest rate	1.82%	2.12%	2.06%
Dividend yield	0.32%	0.32%	0.38%
Forfeiture rate	0.00%	0.00%	0.00%
Expected option life (years)	6 years	7 years	7 years
Weighted average fair value	$ 15.47	$ 19.59	$ 17.23
Heico Common Stock [Member]
Expected stock price volatility	39.63%	39.96%
Risk-free interest rate	2.16%	2.30%
Dividend yield	0.24%	0.24%
Forfeiture rate	0.00%	0.00%
Expected option life (years)	9 years	9 years
Weighted average fair value	$ 23.62	$ 28.46

SHARE-BASED COMPENSATION (Details Textuals) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Shares approved by Shareholders (Shares Available for Grant)	2,700,000
Number Outstanding (in shares)	3,338,000	3,335,000	3,264,000	3,142,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	1,032,000	1,326,000	1,617,000	1,840,000
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	5 years
Pre-tax unrecognized compensation expense related to nonvested stock options	$ 14,400
Pre-tax unrecognized compensation expense related to nonvested stock options, expected to be recognized over a weighted average period (in years)	3 years 2 months 13 days
Fair value of stock options, Vested	$ 5,800	$ 5,500	$ 5,900
Excess tax benefit from stock option exercises	$ 881	1,402	$ 93
Deferred Compensation Arrangement with Individual, Shares Issued			24,982
Deferred Compensation Arrangement with Individual, Common Stock Reserved for Future Issuance			62,455
Common Class A [Member]
Number Outstanding (in shares)	1,662,000
Stock Option and Future Grants [Member]
Shares approved by Shareholders (Shares Available for Grant)	4,300,000
Number Outstanding (in shares)	3,300,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	1,000,000
Employee Stock Option [Member]
Allocated Share-based Compensation Expense	$ 6,400	5,800	$ 6,200
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	$ 2,400	$ 2,200	$ 2,400

EMPLOYEE RETIREMENT PLANS EMPLOYEE RETIREMENT PLANS, Defined Contribution Plan Share-based Activity (Details) - shares shares in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Defined Contribution Plan Disclosure [Line Items]
Shares available for issuance, Opening Balance	14	68	125
Shares registered for issuance to the 401(k) Plan	300
Issuance of common stock to 401(k) Plan	(62)	(54)	(57)
Shares available for issuance, Ending Balance	252	14	68
Common Class A [Member]
Defined Contribution Plan Disclosure [Line Items]
Shares available for issuance, Opening Balance	14	68	125
Shares registered for issuance to the 401(k) Plan	300
Issuance of common stock to 401(k) Plan	(62)	(54)	(57)
Shares available for issuance, Ending Balance	252	14	68

EMPLOYEE RETIREMENT PLANS EMPLOYEE RETIREMENT PLANS, Projected Benefit Obligation and Plan Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Change in projected benefit obligation:
Projected benefit obligation, Opening balance	$ 14,168	$ 13,815
Actuarial gain	655	716
Interest cost	613	561
Benefits paid	(925)	(924)
Projected benefit obligation, Ending balance	14,511	14,168	$ 13,815
Change in plan assets:
Fair value of plan assets, Opening balance	10,767	11,359
Actual return on plan assets	263	254
Employer contributions	405	78
Benefits paid	(925)	(924)
Fair value of plan assets, Ending balance	10,510	10,767	11,359
Funded status	$ 4,001	3,401
FY 2013 Acquisition [Member]
Change in projected benefit obligation:
Interest cost		$ 561	$ 610

EMPLOYEE RETIREMENT PLANS EMPLOYEE RETIREMENT PLANS, Weighted Average Assumptions (Details)	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Weighted Average Discount Rate [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	3.99%	4.47%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate	4.47%	4.20%	4.79%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets	6.75%	6.75%	6.75%

EMPLOYEE RETIREMENT PLANS EMPLOYEE RETIREMENT PLANS, Net Pension Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Expected return on plan assets	$ 702
Interest cost	613	$ 561
Net pension income	$ 89
FY 2013 Acquisition [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected return on plan assets		738	$ 739
Interest cost		561	610
Net pension income		$ 177	$ 129

EMPLOYEE RETIREMENT PLANS EMPLOYEE RETIREMENT PLANS, Estimated Future Benefit Payments (Details) $ in Thousands	Oct. 31, 2016 USD ($)
Year ending October 31,
Next Twelve Months	$ 921
Year Two	895
Year Three	925
Year Four	926
Year Five	904
Five Fiscal Years Thereafter	$ 4,424

EMPLOYEE RETIREMENT PLANS EMPLOYEE RETIREMENT PLANS, Plan Assets Fair Value (Details) - USD ($) $ in Thousands	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	$ 10,510	$ 10,767	$ 11,359
Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	10,510	10,767
Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	5,219	5,372
Fixed Income Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	5,219	5,372
Fixed Income Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Fixed Income Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	5,149	5,280
Equity Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	5,149	5,280
Equity Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Equity Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Money Market Funds and Cash [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	142	115
Money Market Funds and Cash [Member] \| Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	142	115
Money Market Funds and Cash [Member] \| Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Money Market Funds and Cash [Member] \| Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	$ 0	$ 0

EMPLOYEE RETIREMENT PLANS EMPLOYEE RETIREMENT PLANS, Actual and Targeted Asset Allocations (Details)	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations	100.00%	100.00%
Defined Benefit Plan, Target Plan Asset Allocations	100.00%	100.00%
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations	50.00%	50.00%
Defined Benefit Plan, Target Plan Asset Allocations	50.00%	50.00%
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations	49.00%	49.00%
Defined Benefit Plan, Target Plan Asset Allocations	50.00%	50.00%
Money Market Funds and Cash [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations	1.00%	1.00%
Defined Benefit Plan, Target Plan Asset Allocations	0.00%	0.00%

EMPLOYEE RETIREMENT PLANS (Details Textuals) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Defined contribution plan partcipants range minimum	6.00%
Defined contribution plan partcipants employees range maximum	6.00%
Defined contribution plan, vesting of employee contribution and cash dividends, percent	100.00%
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 7,000	$ 6,100	$ 6,300
Employer contributions	405	78
Defined Benefit Plan, Funded Status of Plan	4,001	3,401
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Gains (Losses), before Tax	(2,200)
Defined Benefit Plan, Actuarial Gain (Loss)	(655)	(716)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, before Reclassification Adjustments, Tax		(400)
Defined Benefit Plan, Actuarial Gain (Loss) before Tax	(1,100)	$ (1,200)
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year	400
Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss), before Tax, Expected Next Fiscal Year	$ (100)
Minimum [Member]
Defined contribution plan partcipants range minimum	25.00%
Maximum [Member]
Defined contribution plan partcipants range minimum	50.00%

REDEEMABLE NONCONTROLLING INTERESTS REDEEMABLE NONCONTROLLING INTERESTS (Details)

12 Months Ended

Oct. 31, 2016

Electronic Technologies Group [Member] | Subsidiary One [Member]

Business Acquisition [Line Items]

Business Acquisition, Effective Date of Acquisition

Oct. 31, 2005

Percentage of interest acquired in the subsidiary

95.90%

Class of Warrant or Right, Date from which Warrants or Rights Exercisable

Oct. 31, 2017

^[1]

Put Rights Purchase Period

4 years

^[2]

Electronic Technologies Group [Member] | Subsidiary Four [Member]

Business Acquisition [Line Items]

Business Acquisition, Effective Date of Acquisition

Oct. 31, 2009

Percentage of interest acquired in the subsidiary

82.50%

Class of Warrant or Right, Date from which Warrants or Rights Exercisable

Oct. 31, 2017

^[1]

Put Rights Purchase Period

1 year

Electronic Technologies Group [Member] | Subsidiary Six [Member]

Business Acquisition [Line Items]

Business Acquisition, Effective Date of Acquisition

Oct. 31, 2012

Percentage of interest acquired in the subsidiary

78.00%

Class of Warrant or Right, Date from which Warrants or Rights Exercisable

Oct. 31, 2017

Put Rights Purchase Period

2 years

Electronic Technologies Group [Member] | Subsidiary Eleven [Member]

Business Acquisition [Line Items]

Business Acquisition, Effective Date of Acquisition

Oct. 31, 2015

Percentage of interest acquired in the subsidiary

80.10%

Class of Warrant or Right, Date from which Warrants or Rights Exercisable

Oct. 31, 2020

Put Rights Purchase Period

2 years

Flight Support Group [Member] | Subsidiary Two [Member]

Business Acquisition [Line Items]

Business Acquisition, Effective Date of Acquisition

Oct. 31, 2006

Percentage of interest acquired in the subsidiary

80.10%

Class of Warrant or Right, Date from which Warrants or Rights Exercisable

Oct. 31, 2017

^[1]

Put Rights Purchase Period

4 years

Flight Support Group [Member] | Subsidiary Three [Member]

Business Acquisition [Line Items]

Business Acquisition, Effective Date of Acquisition

Oct. 31, 2008

Percentage of interest acquired in the subsidiary

82.30%

Class of Warrant or Right, Date from which Warrants or Rights Exercisable

Oct. 31, 2017

^[1]

Put Rights Purchase Period

5 years

Flight Support Group [Member] | Subsidiary Five [Member]

Business Acquisition [Line Items]

Business Acquisition, Effective Date of Acquisition

Oct. 31, 2011

Percentage of interest acquired in the subsidiary

90.10%

Class of Warrant or Right, Date from which Warrants or Rights Exercisable

^[3]

Put Rights Purchase Period

1 year

^[4]

Flight Support Group [Member] | Subsidiary Seven [Member]

Business Acquisition [Line Items]

Business Acquisition, Effective Date of Acquisition

Oct. 31, 2012

Percentage of interest acquired in the subsidiary

84.00%

Class of Warrant or Right, Date from which Warrants or Rights Exercisable

Oct. 31, 2018

Put Rights Purchase Period

4 years

Flight Support Group [Member] | Subsidiary Eight [Member]

Business Acquisition [Line Items]

Business Acquisition, Effective Date of Acquisition

Oct. 31, 2012

Percentage of interest acquired in the subsidiary

80.10%

Class of Warrant or Right, Date from which Warrants or Rights Exercisable

Oct. 31, 2019

Put Rights Purchase Period

4 years

Flight Support Group [Member] | Subsidiary Nine [Member]

Business Acquisition [Line Items]

Business Acquisition, Effective Date of Acquisition

Oct. 31, 2015

Percentage of interest acquired in the subsidiary

80.00%

Class of Warrant or Right, Date from which Warrants or Rights Exercisable

Oct. 31, 2019

Put Rights Purchase Period

4 years

Flight Support Group [Member] | Subsidiary Ten [Member]

Business Acquisition [Line Items]

Business Acquisition, Effective Date of Acquisition

Oct. 31, 2015

Percentage of interest acquired in the subsidiary

80.10%

Class of Warrant or Right, Date from which Warrants or Rights Exercisable

Oct. 31, 2020

Put Rights Purchase Period

4 years

Flight Support Group [Member] | Subsidiary Twelve [Member]

Business Acquisition [Line Items]

Business Acquisition, Effective Date of Acquisition

Oct. 31, 2015

Percentage of interest acquired in the subsidiary

80.10%

Class of Warrant or Right, Date from which Warrants or Rights Exercisable

Oct. 31, 2022

Put Rights Purchase Period

4 years

[1]	(1) Currently puttable
[2]	(2) A portion is to be purchased in a lump sum
[3]	(3) Put Right previously exercised
[4]	(4) Represents remaining purchase period for previously exercised Put Right

REDEEMABLE NONCONTROLLING INTERESTS (Details Textuals) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Business Acquisition [Line Items]
Management's estimate of the aggregate redemption amount of all put rights	$ 99,512	$ 91,282
Estimated Redemption Amount of equity interest redeemable at fair value	85,600
Estimated Redemption Amount of equity interest redeemable based on a multiple of future earnings	13,900
Payments For Repurchase Of Redeemable Noncontrolling Interest	(3,599)	$ 0	$ (1,243)
Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition [Line Items]
Aggregate Redemption Amount Puttable	28,200
Potential Redemption Amount Payable	17,600
Potential Redemption of Previously Exercised Put Rights	$ 4,000
Subsidiary One [Member] \| Electronic Technologies Group [Member]
Business Acquisition [Line Items]
Percentage of interest acquired in the subsidiary	95.90%
Subsidiary Two [Member] \| Flight Support Group [Member]
Business Acquisition [Line Items]
Percentage of interest acquired in the subsidiary	80.10%
Subsidiary Three [Member] \| Flight Support Group [Member]
Business Acquisition [Line Items]
Percentage of interest acquired in the subsidiary	82.30%
Subsidiary Four [Member] \| Electronic Technologies Group [Member]
Business Acquisition [Line Items]
Percentage of interest acquired in the subsidiary	82.50%
Subsidiary Five [Member] \| Flight Support Group [Member]
Business Acquisition [Line Items]
Percentage of interest acquired in the subsidiary	90.10%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	19.90%
Percentage of company total ownership interest	90.10%
Subsidiary Six [Member] \| Electronic Technologies Group [Member]
Business Acquisition [Line Items]
Percentage of interest acquired in the subsidiary	78.00%

NET INCOME PER SHARE ATTRIBUTABLE TO HEICO SHAREHOLDERS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Numerator:
Net income attributable to HEICO	$ 44,262	$ 42,002	$ 38,657	$ 31,271	$ 38,250	$ 34,369	$ 33,105	$ 27,640	$ 156,192	$ 133,364	$ 121,293
Denominator:
Weighted average common shares outstanding - basic									67,045	66,740	66,463
Effect of dilutive stock options									1,125	1,071	990
Weighted Average Number of Shares Outstanding, Diluted									68,170	67,811	67,453
Basic	$ 0.66	$ 0.63	$ 0.58	$ 0.47	$ 0.57	$ 0.51	$ 0.50	$ 0.42	$ 2.33	$ 2.00	$ 1.82
Diluted	$ 0.65	$ 0.62	$ 0.57	$ 0.46	$ 0.56	$ 0.51	$ 0.49	$ 0.41	$ 2.29	$ 1.97	$ 1.80
Anti-dilutive stock options excluded									580	412	430

QUARTERLY FINANCIAL INFORMATION (UNAUDITED) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Net sales:
Net sales	$ 363,299	$ 356,084	$ 350,648	$ 306,227	$ 328,672	$ 300,370	$ 291,421	$ 268,185	$ 1,376,258	$ 1,188,648	$ 1,132,311
Gross profit:
Gross profit	135,684	133,583	134,029	112,196	126,796	108,092	105,494	93,797
Net income from consolidated operations:
Net income from consolidated operations	49,521	46,976	43,729	35,924	44,031	38,938	38,504	32,091	176,150	153,564	138,772
Net income attributable to HEICO:
Net income attributable to HEICO	$ 44,262	$ 42,002	$ 38,657	$ 31,271	$ 38,250	$ 34,369	$ 33,105	$ 27,640	$ 156,192	$ 133,364	$ 121,293
Basic:
Basic (in dollars per share)	$ 0.66	$ 0.63	$ 0.58	$ 0.47	$ 0.57	$ 0.51	$ 0.50	$ 0.42	$ 2.33	$ 2.00	$ 1.82
Diluted:
Diluted (in dollars per share)	$ 0.65	$ 0.62	$ 0.57	$ 0.46	$ 0.56	$ 0.51	$ 0.49	$ 0.41	$ 2.29	$ 1.97	$ 1.80

QUARTERLY FINANCIAL INFORMATION (UNAUDITED) (Details Textuals) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Jan. 31, 2016	Jan. 31, 2015
Net Income Impact From Research And Development Credits Net Of Expenses	$ 1.7	$ 1.8
Impact from US Federal R&D Tax Credit on Earnings Per Share, Basic	$ 0.03
Impact from US Federal R&D Tax Credit on Earnings Per Share, Diluted	$ 0.02
Earnings Per Share Impact From Research And Development Credits Net Of Expenses		$ 0.03
FY 2016 Acquisition [Member]
Business Combination, Acquisition Related Costs	$ 3.1
Impact to Net Income from Acquisition Costs, Net of Tax	$ 2.0
Impact to Net Income from Acquisition Costs, Net of Tax Per Basic and Diluted Share	$ 0.03

OPERATING SEGMENTS (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
OPERATING SEGMENTS (Details) - USD ($) $ in Thousands	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Segment Reporting, Reconciling Item For Operating Profit (Loss) and Capital Expenditure From Segment To Consolidated [Line Items]
Net sales	$ 363,299	$ 356,084	$ 350,648	$ 306,227	$ 328,672	$ 300,370	$ 291,421	$ 268,185	$ 1,376,258	$ 1,188,648	$ 1,132,311
Depreciation									20,361	17,830	17,068
Amortization									39,916	30,077	30,689
Depreciation and amortization									60,277	47,907	47,757
Operating income									265,345	229,656	203,388
Capital expenditures									30,863	18,249	16,410
Total assets	2,039,475				1,736,387				2,039,475	1,736,387	1,489,214
Flight Support Group [Member]
Segment Reporting, Reconciling Item For Operating Profit (Loss) and Capital Expenditure From Segment To Consolidated [Line Items]
Net sales									875,870	809,700	762,801
Depreciation									12,113	10,859	9,809
Amortization									16,590	13,470	10,034
Operating income									163,427	149,798	136,480
Capital expenditures									18,434	11,737	9,437
Total assets	878,674				868,218				878,674	868,218	676,824
Electronic Technologies Group [Member]
Segment Reporting, Reconciling Item For Operating Profit (Loss) and Capital Expenditure From Segment To Consolidated [Line Items]
Net sales									511,272	390,982	379,404
Depreciation									8,030	6,803	7,113
Amortization									22,664	15,945	19,993
Operating income									126,031	98,833	88,914
Capital expenditures									11,962	6,201	6,327
Total assets	1,017,827				746,018				1,017,827	746,018	703,144
Other Primarily Corporate and Inter Segment [Member]
Segment Reporting, Reconciling Item For Operating Profit (Loss) and Capital Expenditure From Segment To Consolidated [Line Items]
Depreciation									218	168	146
Amortization									662	662	662
Operating income									(24,113)	(18,975)	(22,006)
Capital expenditures									467	311	646
Total assets	$ 142,974				$ 122,151				142,974	122,151	109,246
Consolidation, Eliminations [Member] \| Other Primarily Corporate and Inter Segment [Member]
Segment Reporting, Reconciling Item For Operating Profit (Loss) and Capital Expenditure From Segment To Consolidated [Line Items]
Net sales									$ (10,884)	$ (12,034)	$ (9,894)

OPERATING SEGMENTS OPERATING SEGMENTS, Information by Product Line (Details) - USD ($)
$ in Thousands

3 Months Ended

12 Months Ended

Oct. 31, 2016

Jul. 31, 2016

Apr. 30, 2016

Jan. 31, 2016

Oct. 31, 2015

Jul. 31, 2015

Apr. 30, 2015

Jan. 31, 2015

Oct. 31, 2016

Oct. 31, 2015

Oct. 31, 2014

Product Information [Line Items]

Net sales

$ 363,299

$ 356,084

$ 350,648

$ 306,227

$ 328,672

$ 300,370

$ 291,421

$ 268,185

$ 1,376,258

$ 1,188,648

$ 1,132,311

Flight Support Group [Member]

Product Information [Line Items]

Net sales

875,870

809,700

762,801

Flight Support Group [Member] | Aftermarket Replacement Parts [Member]

Product Information [Line Items]

Net sales

^[1]

405,108

356,070

327,416

Flight Support Group [Member] | Repair and Overhaul Parts and Services [Member]

Product Information [Line Items]

Net sales

^[2]

251,357

258,952

253,717

Flight Support Group [Member] | Specialty Products [Member]

Product Information [Line Items]

Net sales

^[3]

219,405

194,678

181,668

Electronic Technologies Group [Member]

Product Information [Line Items]

Net sales

511,272

390,982

379,404

Electronic Technologies Group [Member] | Electronic Components for Defense, Space and Aerospace [Member]

Product Information [Line Items]

Net sales

^[4]

371,297

255,095

243,130

Electronic Technologies Group [Member] | Other Electronic Components [Member]

Product Information [Line Items]

Net sales

^[5]

139,975

135,887

136,274

Consolidation, Eliminations [Member] | Other Primarily Corporate and Inter Segment [Member]

Product Information [Line Items]

Net sales

$ (10,884)

$ (12,034)

$ (9,894)

[1]	(1) Includes various jet engine and aircraft component replacement parts.
[2]	(2) Includes primarily the sale of parts consumed in various repair and overhaul services on selected jet engine and aircraft components, avionics, instruments, composites and flight surfaces of commercial and military aircraft.
[3]	(3) Includes primarily the sale of specialty components to OEMs such as thermal insulation blankets, renewable /reusable insulation systems, advanced niche components, complex composite assemblies, and expanded foil mesh.
[4]	(4) Includes various component parts such as electro-optical infrared simulation and test equipment, electro-optical laser products, electro-optical, microwave and other power equipment, high-speed interface products, power conversion products, underwater locator beacons, traveling wave tube amplifiers, microwave power modules, three-dimensional microelectronic and stacked memory products, crashworthy and ballistically self-sealing auxiliary fuel systems, RF and microwave amplifiers, transmitters and receivers, and high performance communications and electronic intercept receivers and tuners.
[5]	(5) Includes various component parts such as electromagnetic and radio interference shielding, high voltage interconnection devices, high voltage advanced power electronics, harsh environment connectivity products, and custom molded cable assemblies.

OPERATING SEGMENTS (Details 2) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
OPERATING SEGMENTS (Details 2) - USD ($) $ in Thousands	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 363,299	$ 356,084	$ 350,648	$ 306,227	$ 328,672	$ 300,370	$ 291,421	$ 268,185	$ 1,376,258	$ 1,188,648	$ 1,132,311
Property, Plant and Equipment, Net	121,611				105,670				121,611	105,670	93,865
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									904,670	785,567	754,616
Property, Plant and Equipment, Net	94,889				85,253				94,889	85,253	84,116
Other Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									471,588	403,081	377,695
Property, Plant and Equipment, Net	$ 26,722				$ 20,417				$ 26,722	$ 20,417	$ 9,749

COMMITMENTS AND CONTINGENCIES (Details) $ in Thousands	Oct. 31, 2016 USD ($)
Year One	$ 11,787
Year Two	8,577
Year Three	6,491
Year Four	6,063
Year Five	5,932
Thereafter	18,002
Total minimum lease commitments	$ 56,852

COMMITMENTS AND CONTINGENCIES (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Balances as of beginning of year	$ 3,203	$ 4,079
Accruals for warranties	3,025	1,215
Acquired warranty liabilities	0	35
Warranty claims settled	(2,877)	(2,126)
Balances as of end of year	$ 3,351	$ 3,203

SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Cash paid for income taxes	$ 87,486	$ 76,021	$ 72,723
Cash received from income tax refunds	(1,906)	(1,211)	(395)
Cash paid for interest	8,288	4,598	5,550
Other Significant Noncash Transaction, Value of Consideration Received	0	(204)	(56)
Property, plant and equipment acquired through capital lease obligations	1,111	59	131
Other Acquisitions [Member]
Contingent purchase consideration	1,225	21,355	0
Other Significant Noncash Transaction, Value of Consideration Received	$ 0	$ (211)	$ (56)

VALUATION AND QUALIFYING ACCOUNTS VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($)
$ in Thousands

12 Months Ended

Oct. 31, 2016

Oct. 31, 2015

Oct. 31, 2014

Allowance for Doubtful Accounts [Member]

Movement in Valuation Allowances and Reserves [Roll Forward]

Valuation Allowances and Reserves, Opening Balance

$ 2,038

$ 2,143

$ 3,096

Valuation Allowances and Reserves, Charged to Cost and Expense

390

248

Deductions Charged to Costs and Expenses

(232)

Deductions to Other Accounts

^[1]

(31)

Valuation Allowances and Reserves, Charged to Other Accounts

^[1]

973

Valuation Allowances and Reserves, Deductions

^[2]

(242)

(408)

(690)

Valuation Allowances and Reserves, Ending Balance

3,159

2,038

2,143

Inventory Valuation Reserve [Member]

Movement in Valuation Allowances and Reserves [Roll Forward]

Valuation Allowances and Reserves, Opening Balance

69,654

60,608

54,577

Valuation Allowances and Reserves, Charged to Cost and Expense

10,270

7,779

9,398

Deductions to Other Accounts

^[3]

(322)

Valuation Allowances and Reserves, Charged to Other Accounts

^[3]

6,268

4,598

Valuation Allowances and Reserves, Deductions

^[4]

(4,743)

(3,331)

(3,045)

Valuation Allowances and Reserves, Ending Balance

$ 81,449

$ 69,654

$ 60,608

[1]	Principally additions from acquisitions and foreign currency translation adjustments.
[2]	Principally write-offs of uncollectible accounts receivable, net of recoveries.
[3]	Principally additions from acquisitions and foreign currency translation adjustments
[4]	Principally write-offs of slow-moving, obsolete or damaged inventory

Buildings and improvements

Leasehold improvements

Machinery and equipment