SEC Filings

Filing date	Form	Description	View
Jan 17, 2006	10-K	Annual report which provides a comprehensive overview of the company for the past year	View HTML 0001133796-06-000006.pdf 0001133796-06-000006.xls
Jan 12, 2004	10-K	Annual report which provides a comprehensive overview of the company for the past year	View HTML 0001140437-04-000027.pdf 0001140437-04-000027.xls
Dec 22, 2011	10-K	Annual report which provides a comprehensive overview of the company for the past year	View HTML 0001133796-11-000362.pdf 0001133796-11-000362.xls EX-101.INS - XBRL INSTANCE DOCUMENT
Jan 12, 2007	10-K	Annual report which provides a comprehensive overview of the company for the past year	View HTML 0001133796-07-000024.pdf 0001133796-07-000024.xls
Jan 27, 2000	10-K	Annual report which provides a comprehensive overview of the company for the past year	View HTML 0000950170-00-000090.pdf 0000950170-00-000090.xls
Dec 28, 2007	10-K	Annual report which provides a comprehensive overview of the company for the past year	View HTML 0001133796-07-000411.pdf 0001133796-07-000411.xls
Jan 27, 1998	10-K	Annual report which provides a comprehensive overview of the company for the past year	View HTML 0000950170-98-000125.pdf 0000950170-98-000125.xls
Jan 14, 2005	10-K	Annual report which provides a comprehensive overview of the company for the past year	View HTML 0001133796-05-000008.pdf 0001133796-05-000008.xls
Jan 22, 2003	10-K	Annual report which provides a comprehensive overview of the company for the past year	View HTML 0001133796-03-000006.pdf 0001133796-03-000006.xls
Jan 28, 1997	10-K	Annual report which provides a comprehensive overview of the company for the past year	View HTML 0000950170-97-000063.pdf 0000950170-97-000063.xls
Dec 23, 2009	10-K	Annual report which provides a comprehensive overview of the company for the past year	View HTML 0001133796-09-000266.pdf 0001133796-09-000266.xls
Dec 22, 2010	10-K	Annual report which provides a comprehensive overview of the company for the past year	View HTML 0001133796-10-000375.pdf 0001133796-10-000375.xls EX-101.INS - XBRL INSTANCE DOCUMENT
Dec 24, 2008	10-K	Annual report which provides a comprehensive overview of the company for the past year	View HTML 0001133796-08-000357.pdf 0001133796-08-000357.xls
Dec 20, 2012	10-K	Annual report which provides a comprehensive overview of the company for the past year	View HTML 0000046619-12-000009.pdf 0000046619-12-000009.xls EX-101.INS - XBRL INSTANCE DOCUMENT
Dec 19, 2013	10-K	Annual report which provides a comprehensive overview of the company for the past year	View HTML 0000046619-13-000017.pdf 0000046619-13-000017.xls EX-101.INS - XBRL INSTANCE DOCUMENT
Dec 18, 2014	10-K	Annual report which provides a comprehensive overview of the company for the past year	View HTML 0000046619-14-000056.pdf 0000046619-14-000056.xls EX-101.INS - XBRL INSTANCE DOCUMENT
Dec 17, 2015	10-K	Annual report which provides a comprehensive overview of the company for the past year	View HTML 0000046619-15-000078.pdf 0000046619-15-000078.xls EX-101.INS - XBRL INSTANCE DOCUMENT
Dec 15, 2016	10-K	Annual report which provides a comprehensive overview of the company for the past year	View HTML 0000046619-16-000162.pdf 0000046619-16-000162.xls EX-101.INS - XBRL INSTANCE DOCUMENT
Dec 21, 2017	10-K	Annual report which provides a comprehensive overview of the company for the past year	View HTML 0000046619-17-000085.pdf 0000046619-17-000085.xls EX-101.INS - XBRL INSTANCE DOCUMENT
Dec 20, 2018	10-K	Annual report which provides a comprehensive overview of the company for the past year	View HTML 10.31.2018 Form 10K.pdf 2.6 MB 0000046619-18-000117.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
Dec 19, 2019	10-K	Annual report which provides a comprehensive overview of the company for the past year	View HTML 10.31.2019 Form 10K.pdf 2.6 MB 0000046619-19-000095.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
Dec 23, 2020	10-K	Annual report which provides a comprehensive overview of the company for the past year	View HTML Q4-2020-12-23-15-35.cleaned.pdf 1.2 MB 0000046619-20-000078.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
Dec 21, 2021	10-K	Annual report which provides a comprehensive overview of the company for the past year	View HTML 10.31.21 Q4 10K-2021-12-21-16-08.pdf 1.1 MB 0000046619-21-000085.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
Dec 21, 2022	10-K	Annual report which provides a comprehensive overview of the company for the past year	View HTML 10.31.2022 HEI Q4 10K-2022-12-21-16-13.pdf 0000046619-22-000066.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
Dec 20, 2023	10-K	Annual report which provides a comprehensive overview of the company for the past year	View HTML 10.31.23 10K-2023-12-20-16-45.pdf 0000046619-23-000163.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA

Data provided by Kaleidoscope.