Annuals and Proxies Form 10-Ks Filing date View Aug 22, 2023 View HTML 0000807863-23-000075.pdf 0000807863-23-000075.xls Jul 31, 2023 View HTML 0000807863-23-000049.pdf 0000807863-23-000049.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA Dec 19, 2022 View HTML 0000807863-22-000139.pdf 0000807863-22-000139.xls Dec 15, 2022 View HTML 0000807863-22-000136.pdf 0000807863-22-000136.xls Dec 13, 2021 View HTML 0000807863-21-000098.pdf 0000807863-21-000098.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA Proxy Statements Filing date View Aug 22, 2023 View HTML 0000807863-23-000073.pdf 0000807863-23-000073.xls Jan 26, 2022 View HTML 0000807863-22-000012.pdf 0000807863-22-000012.xls 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 Jan 28, 2019 View HTML 0000807863-19-000005.pdf 0000807863-19-000005.xls