Financials & Filings Proxy Statements Filing date View Jan 22, 2021 View HTML 0000807863-21-000008.pdf 0000807863-21-000008.xls Jan 27, 2020 View HTML 0000807863-20-000012.pdf 0000807863-20-000012.xls Form 10-Q Filing date View Aug 5, 2021 View HTML 0000807863-21-000084.pdf 0000807863-21-000084.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA May 6, 2021 View HTML 0000807863-21-000063.pdf 0000807863-21-000063.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA Form 10-K Filing date View Dec 11, 2020 View HTML 0000807863-20-000140.pdf 0000807863-20-000140.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA Dec 7, 2020 View HTML 0000807863-20-000136.pdf 0000807863-20-000136.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA