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Filing date	Form	Description	View
Apr 24, 2020	10-Q	Quarterly report which provides a continuing view of a company's financial position	View HTML 0000808362-20-000009.pdf 0000808362-20-000009.rtf 0000808362-20-000009.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
Jul 24, 2020	10-Q	Quarterly report which provides a continuing view of a company's financial position	View HTML 0000808362-20-000012.pdf 0000808362-20-000012.rtf 0000808362-20-000012.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
Oct 23, 2020	10-Q	Quarterly report which provides a continuing view of a company's financial position	View HTML 0000808362-20-000014.pdf 0000808362-20-000014.rtf 0000808362-20-000014.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
Apr 23, 2021	10-Q	Quarterly report which provides a continuing view of a company's financial position	View HTML 0000808362-21-000010.pdf 0000808362-21-000010.rtf 0000808362-21-000010.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
Jul 23, 2021	10-Q	Quarterly report which provides a continuing view of a company's financial position	View HTML 0000808362-21-000031.pdf 0000808362-21-000031.rtf 0000808362-21-000031.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
Dec 10, 1996	10-K405	Annual report. The Regulation S-K Item 405 box on the cover page is checked	View HTML 0000899243-96-001570.pdf 0000899243-96-001570.rtf
Mar 16, 2000	10-K405	Annual report. The Regulation S-K Item 405 box on the cover page is checked	View HTML 0000950129-00-001215.pdf 0000950129-00-001215.rtf
Jul 19, 1999	10-K/A	Amendment to a previously filed 10-K	View HTML 0000950129-99-003218.pdf 0000950129-99-003218.rtf
Mar 04, 2011	10-K/A	Amendment to a previously filed 10-K	View HTML 0000950123-11-022278.pdf 0000950123-11-022278.rtf 0000950123-11-022278.xls EX-101.INS - EX-101 INSTANCE DOCUMENT
Feb 19, 2016	10-K/A	Amendment to a previously filed 10-K	View HTML 0000808362-16-000055.pdf 0000808362-16-000055.rtf 0000808362-16-000055.xls EX-101.INS - XBRL INSTANCE DOCUMENT