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Validate a separately constructed return series with the validation API; accounting values are not returns.", "concepts": [ { "tag": "Assets", "taxonomy": "us-gaap", "label": "Total assets", "kind": "instant", "meaning": "Resources recognized on the balance sheet. 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Restricted cash and longer-term investments may be reported separately.", "observations": [ { "end": "2019-12-31", "val": 14433000, "accn": "0000765207-20-000010", "fy": 2019, "fp": "FY", "form": "10-K", "filed": "2020-03-06", "frame": "CY2019Q4I", "unit": "USD" }, { "end": "2018-12-31", "val": 19134000, "accn": "0000765207-20-000010", "fy": 2019, "fp": "FY", "form": "10-K", "filed": "2020-03-06", "frame": "CY2018Q4I", "unit": "USD" }, { "end": "2017-12-31", "val": 19207000, "accn": "0000765207-20-000010", "fy": 2019, "fp": "FY", "form": "10-K", "filed": "2020-03-06", "frame": "CY2017Q4I", "unit": "USD" }, { "end": "2016-12-31", "val": 17366000, "accn": "0000765207-20-000010", "fy": 2019, "fp": "FY", "form": "10-K", "filed": "2020-03-06", "frame": "CY2016Q4I", "unit": "USD" }, { "end": "2015-12-31", "val": 14299000, "accn": "0000765207-19-000008", "fy": 2018, "fp": "FY", "form": "10-K", "filed": "2019-03-08", "frame": "CY2015Q4I", "unit": "USD" }, { "end": "2014-12-31", "val": 13057000, "accn": "0000765207-18-000008", "fy": 2017, "fp": "FY", "form": "10-K", "filed": "2018-03-14", "frame": "CY2014Q4I", "unit": "USD" }, { "end": "2013-12-31", "val": 16570000, "accn": "0000765207-17-000008", "fy": 2016, "fp": "FY", "form": "10-K", "filed": "2017-03-10", "frame": "CY2013Q4I", "unit": "USD" }, { "end": "2012-12-31", "val": 14958000, "accn": "0000765207-16-000060", "fy": 2015, "fp": "FY", "form": "10-K", "filed": "2016-03-11", "frame": "CY2012Q4I", "unit": "USD" }, { "end": "2011-12-31", "val": 14115000, "accn": "0000765207-15-000010", "fy": 2014, "fp": "FY", "form": "10-K", "filed": "2015-03-13", "frame": "CY2011Q4I", "unit": "USD" }, { "end": "2010-12-31", "val": 13838000, "accn": "0000765207-13-000009", "fy": 2012, "fp": "FY", "form": "10-K", "filed": "2013-03-08", "frame": "CY2010Q4I", "unit": "USD" }, { "end": "2009-12-31", "val": 13838000, "accn": "0000765207-14-000009", "fy": 2013, "fp": "FY", "form": "10-K", "filed": "2014-03-14", "frame": "CY2009Q4I", "unit": "USD" }, { "end": "2008-12-31", "val": 16856000, "accn": "0000765207-12-000010", "fy": 2011, "fp": "FY", "form": "10-K", "filed": "2012-03-12", "frame": "CY2008Q4I", "unit": "USD" }, { "end": "2007-12-31", "val": 17254000, "accn": "0000765207-11-000023", "fy": 2010, "fp": "FY", "form": "10-K", "filed": "2011-03-11", "frame": "CY2007Q4I", "unit": "USD" } ] }, { "tag": "NetIncomeLoss", "taxonomy": "us-gaap", "label": "Net income or loss", "kind": "duration", "meaning": "Reported profit or loss for the period. Check the filing for attribution, exceptional items and discontinued operations before comparing companies.", "observations": [ { "start": "2025-01-01", "end": "2025-12-31", "val": 34394000, "accn": "0000765207-26-000067", "fy": 2025, "fp": "FY", "form": "10-K", "filed": "2026-03-06", "frame": "CY2025", "unit": "USD" }, { "start": "2024-01-01", "end": "2024-12-31", "val": 27045000, "accn": "0000765207-26-000067", "fy": 2025, "fp": "FY", "form": "10-K", "filed": "2026-03-06", "frame": "CY2024", "unit": "USD" }, { "start": "2023-01-01", "end": "2023-12-31", "val": 29518000, "accn": "0000765207-26-000067", "fy": 2025, "fp": "FY", "form": "10-K", "filed": "2026-03-06", "frame": "CY2023", "unit": "USD" }, { "start": "2022-01-01", "end": "2022-12-31", "val": 38990000, "accn": "0000765207-25-000018", "fy": 2024, "fp": "FY", "form": "10-K", "filed": "2025-03-07", "frame": "CY2022", "unit": "USD" }, { "start": "2021-01-01", "end": "2021-12-31", "val": 36269000, "accn": "0000765207-24-000010", "fy": 2023, "fp": "FY", "form": "10-K", "filed": "2024-03-08", "frame": "CY2021", "unit": "USD" }, { "start": "2020-01-01", "end": "2020-12-31", "val": 27129000, "accn": "0000765207-23-000010", "fy": 2022, "fp": "FY", "form": "10-K", "filed": "2023-03-10", "frame": "CY2020", "unit": "USD" }, { "start": "2019-01-01", "end": "2019-12-31", "val": 25525000, "accn": "0000765207-22-000010", "fy": 2021, "fp": "FY", "form": "10-K", "filed": "2022-03-11", "frame": "CY2019", "unit": "USD" }, { "start": "2018-01-01", "end": "2018-12-31", "val": 23536000, "accn": "0000765207-21-000013", "fy": 2020, "fp": "FY", "form": "10-K", "filed": "2021-03-05", "frame": "CY2018", "unit": "USD" }, { "start": "2017-01-01", "end": "2017-12-31", "val": 19588000, "accn": "0000765207-20-000010", "fy": 2019, "fp": "FY", "form": "10-K", "filed": "2020-03-06", "frame": "CY2017", "unit": "USD" }, { "start": "2016-01-01", "end": "2016-12-31", "val": 18009000, "accn": "0000765207-19-000008", "fy": 2018, "fp": "FY", "form": "10-K", "filed": "2019-03-08", "frame": "CY2016", "unit": "USD" }, { "start": "2015-01-01", "end": "2015-12-31", "val": 16206000, "accn": "0000765207-18-000008", "fy": 2017, "fp": "FY", "form": "10-K", "filed": "2018-03-14", "frame": "CY2015", "unit": "USD" }, { "start": "2014-01-01", "end": "2014-12-31", "val": 14709000, "accn": "0000765207-17-000008", "fy": 2016, "fp": "FY", "form": "10-K", "filed": "2017-03-10", "frame": "CY2014", "unit": "USD" }, { "start": "2013-01-01", "end": "2013-12-31", "val": 12965000, "accn": "0000765207-16-000060", "fy": 2015, "fp": "FY", "form": "10-K", "filed": "2016-03-11", "frame": "CY2013", "unit": "USD" }, { "start": "2012-01-01", "end": "2012-12-31", "val": 12688000, "accn": "0000765207-15-000010", "fy": 2014, "fp": "FY", "form": "10-K", "filed": "2015-03-13", "frame": "CY2012", "unit": "USD" }, { "start": "2011-01-01", "end": "2011-12-31", "val": 12364000, "accn": "0000765207-14-000009", "fy": 2013, "fp": "FY", "form": "10-K", "filed": "2014-03-14", "frame": "CY2011", "unit": "USD" }, { "start": "2010-01-01", "end": "2010-12-31", "val": 12116000, "accn": "0000765207-13-000009", "fy": 2012, "fp": "FY", "form": "10-K", "filed": "2013-03-08", "frame": "CY2010", "unit": "USD" }, { "start": "2009-01-01", "end": "2009-12-31", "val": 13042000, "accn": "0000765207-12-000010", "fy": 2011, "fp": "FY", "form": "10-K", "filed": "2012-03-12", "frame": "CY2009", "unit": "USD" }, { "start": "2008-01-01", "end": "2008-12-31", "val": 14034000, "accn": "0000765207-11-000023", "fy": 2010, "fp": "FY", "form": "10-K", "filed": "2011-03-11", "frame": "CY2008", "unit": "USD" } ] }, { "tag": "NetCashProvidedByUsedInOperatingActivities", "taxonomy": "us-gaap", "label": "Operating cash flow", "kind": "duration", "meaning": "Cash generated or used by operating activities. Working-capital timing can make this differ substantially from reported income.", "observations": [ { "start": "2025-01-01", "end": "2025-12-31", "val": 37814000, "accn": "0000765207-26-000067", "fy": 2025, "fp": "FY", "form": "10-K", "filed": "2026-03-06", "frame": "CY2025", "unit": "USD" }, { "start": "2024-01-01", "end": "2024-12-31", "val": 26047000, "accn": "0000765207-26-000067", "fy": 2025, "fp": "FY", "form": "10-K", "filed": "2026-03-06", "frame": "CY2024", "unit": "USD" }, { "start": "2023-01-01", "end": "2023-12-31", "val": 36919000, "accn": "0000765207-26-000067", "fy": 2025, "fp": "FY", "form": "10-K", "filed": "2026-03-06", "frame": "CY2023", "unit": "USD" }, { "start": "2022-01-01", "end": "2022-12-31", "val": 41213000, "accn": "0000765207-25-000018", "fy": 2024, "fp": "FY", "form": "10-K", "filed": "2025-03-07", "frame": "CY2022", "unit": "USD" }, { "start": "2021-01-01", "end": "2021-12-31", "val": 56693000, "accn": "0000765207-24-000010", "fy": 2023, "fp": "FY", "form": "10-K", "filed": "2024-03-08", "frame": "CY2021", "unit": "USD" }, { "start": "2020-01-01", "end": "2020-12-31", "val": 22698000, "accn": "0000765207-23-000010", "fy": 2022, "fp": "FY", "form": "10-K", "filed": "2023-03-10", "frame": "CY2020", "unit": "USD" }, { "start": "2019-01-01", "end": "2019-12-31", "val": 26053000, "accn": "0000765207-22-000010", "fy": 2021, "fp": "FY", "form": "10-K", "filed": "2022-03-11", "frame": "CY2019", "unit": "USD" }, { "start": "2018-01-01", "end": "2018-12-31", "val": 33840000, "accn": "0000765207-21-000013", "fy": 2020, "fp": "FY", "form": "10-K", "filed": "2021-03-05", "frame": "CY2018", "unit": "USD" }, { "start": "2017-01-01", "end": "2017-12-31", "val": 22273000, "accn": "0000765207-20-000010", "fy": 2019, "fp": "FY", "form": "10-K", "filed": "2020-03-06", "frame": "CY2017", "unit": "USD" }, { "start": "2016-01-01", "end": "2016-12-31", "val": 21190000, "accn": "0000765207-19-000008", "fy": 2018, "fp": "FY", "form": "10-K", "filed": "2019-03-08", "frame": "CY2016", "unit": "USD" }, { "start": "2015-01-01", "end": "2015-12-31", "val": 20742000, "accn": "0000765207-18-000008", "fy": 2017, "fp": "FY", "form": "10-K", "filed": "2018-03-14", "frame": "CY2015", "unit": "USD" }, { "start": "2014-01-01", "end": "2014-12-31", "val": 20463000, "accn": "0000765207-17-000008", "fy": 2016, "fp": "FY", "form": "10-K", "filed": "2017-03-10", "frame": "CY2014", "unit": "USD" }, { "start": "2013-01-01", "end": "2013-12-31", "val": 24984000, "accn": "0000765207-16-000060", "fy": 2015, "fp": "FY", "form": "10-K", "filed": "2016-03-11", "frame": "CY2013", "unit": "USD" }, { "start": "2012-01-01", "end": "2012-12-31", "val": 25023000, "accn": "0000765207-15-000010", "fy": 2014, "fp": "FY", "form": "10-K", "filed": "2015-03-13", "frame": "CY2012", "unit": "USD" }, { "start": "2011-01-01", "end": "2011-12-31", "val": 29725000, "accn": "0000765207-14-000009", "fy": 2013, "fp": "FY", "form": "10-K", "filed": "2014-03-14", "frame": "CY2011", "unit": "USD" }, { "start": "2010-01-01", "end": "2010-12-31", "val": 25650000, "accn": "0000765207-13-000009", "fy": 2012, "fp": "FY", "form": "10-K", "filed": "2013-03-08", "frame": "CY2010", "unit": "USD" }, { "start": "2009-01-01", "end": "2009-12-31", "val": 18735000, "accn": "0000765207-12-000010", "fy": 2011, "fp": "FY", "form": "10-K", "filed": "2012-03-12", "frame": "CY2009", "unit": "USD" }, { "start": "2008-01-01", "end": "2008-12-31", "val": 10877000, "accn": "0000765207-11-000023", "fy": 2010, "fp": "FY", "form": "10-K", "filed": "2011-03-11", "frame": "CY2008", "unit": "USD" } ] }, { "tag": "PaymentsToAcquirePropertyPlantAndEquipment", "taxonomy": "us-gaap", "label": "Capital expenditure payments", "kind": "duration", "meaning": "Cash payments to acquire property, plant and equipment. This taxonomy concept does not capture every form of investment or acquisition.", "observations": [ { "start": "2025-01-01", "end": "2025-12-31", "val": 3220000, "accn": "0000765207-26-000067", "fy": 2025, "fp": "FY", "form": "10-K", "filed": "2026-03-06", "frame": "CY2025", "unit": "USD" }, { "start": "2024-01-01", "end": "2024-12-31", "val": 1475000, "accn": "0000765207-26-000067", "fy": 2025, "fp": "FY", "form": "10-K", "filed": "2026-03-06", "frame": "CY2024", "unit": "USD" }, { "start": "2023-01-01", "end": "2023-12-31", "val": 2635000, "accn": "0000765207-26-000067", "fy": 2025, "fp": "FY", "form": "10-K", "filed": "2026-03-06", "frame": "CY2023", "unit": "USD" }, { "start": "2022-01-01", "end": "2022-12-31", "val": 1404000, "accn": "0000765207-25-000018", "fy": 2024, "fp": "FY", "form": "10-K", "filed": "2025-03-07", "frame": "CY2022", "unit": "USD" }, { "start": "2021-01-01", "end": "2021-12-31", "val": 3757000, "accn": "0000765207-24-000010", "fy": 2023, "fp": "FY", "form": "10-K", "filed": "2024-03-08", "frame": "CY2021", "unit": "USD" }, { "start": "2020-01-01", "end": "2020-12-31", "val": 2540000, "accn": "0000765207-23-000010", "fy": 2022, "fp": "FY", "form": "10-K", "filed": "2023-03-10", "frame": "CY2020", "unit": "USD" }, { "start": "2019-01-01", "end": "2019-12-31", "val": 1573000, "accn": "0000765207-22-000010", "fy": 2021, "fp": "FY", "form": "10-K", "filed": "2022-03-11", "frame": "CY2019", "unit": "USD" }, { "start": "2018-01-01", "end": "2018-12-31", "val": 1484000, "accn": "0000765207-21-000013", "fy": 2020, "fp": "FY", "form": "10-K", "filed": "2021-03-05", "frame": "CY2018", "unit": "USD" }, { "start": "2017-01-01", "end": "2017-12-31", "val": 2529000, "accn": "0000765207-20-000010", "fy": 2019, "fp": "FY", "form": "10-K", "filed": "2020-03-06", "frame": "CY2017", "unit": "USD" }, { "start": "2016-01-01", "end": "2016-12-31", "val": 2131000, "accn": "0000765207-19-000008", "fy": 2018, "fp": "FY", "form": "10-K", "filed": "2019-03-08", "frame": "CY2016", "unit": "USD" }, { "start": "2015-01-01", "end": "2015-12-31", "val": 927000, "accn": "0000765207-18-000008", "fy": 2017, "fp": "FY", "form": "10-K", "filed": "2018-03-14", "frame": "CY2015", "unit": "USD" }, { "start": "2014-01-01", "end": "2014-12-31", "val": 1909000, "accn": "0000765207-17-000008", "fy": 2016, "fp": "FY", "form": "10-K", "filed": "2017-03-10", "frame": "CY2014", "unit": "USD" }, { "start": "2013-01-01", "end": "2013-12-31", "val": 2363000, "accn": "0000765207-16-000060", "fy": 2015, "fp": "FY", "form": "10-K", "filed": "2016-03-11", "frame": "CY2013", "unit": "USD" }, { "start": "2012-01-01", "end": "2012-12-31", "val": 1726000, "accn": "0000765207-15-000010", "fy": 2014, "fp": "FY", "form": "10-K", "filed": "2015-03-13", "frame": "CY2012", "unit": "USD" }, { "start": "2011-01-01", "end": "2011-12-31", "val": 1222000, "accn": "0000765207-14-000009", "fy": 2013, "fp": "FY", "form": "10-K", "filed": "2014-03-14", "frame": "CY2011", "unit": "USD" }, { "start": "2010-01-01", "end": "2010-12-31", "val": 2043000, "accn": "0000765207-13-000009", "fy": 2012, "fp": "FY", "form": "10-K", "filed": "2013-03-08", "frame": "CY2010", "unit": "USD" }, { "start": "2009-01-01", "end": "2009-12-31", "val": 3798000, "accn": "0000765207-12-000010", "fy": 2011, "fp": "FY", "form": "10-K", "filed": "2012-03-12", "frame": "CY2009", "unit": "USD" }, { "start": "2008-01-01", "end": "2008-12-31", "val": 796000, "accn": "0000765207-11-000023", "fy": 2010, "fp": "FY", "form": "10-K", "filed": "2011-03-11", "frame": "CY2008", "unit": "USD" } ] }, { "tag": "NetCashProvidedByUsedInFinancingActivities", "taxonomy": "us-gaap", "label": "Financing cash flow", "kind": "duration", "unitKind": "money", "meaning": "Net cash from financing activities, including borrowing, repayments and transactions with owners. A positive amount does not establish operating profitability.", "observations": [ { "start": "2025-01-01", "end": "2025-12-31", "val": -34669000, "accn": "0000765207-26-000067", "fy": 2025, "fp": "FY", "form": "10-K", "filed": "2026-03-06", "frame": "CY2025", "unit": "USD" }, { "start": "2024-01-01", "end": "2024-12-31", "val": 187067000, "accn": "0000765207-26-000067", "fy": 2025, "fp": "FY", "form": "10-K", "filed": "2026-03-06", "frame": "CY2024", "unit": "USD" }, { "start": "2023-01-01", "end": "2023-12-31", "val": 172103000, "accn": "0000765207-26-000067", "fy": 2025, "fp": "FY", "form": "10-K", "filed": "2026-03-06", "frame": "CY2023", "unit": "USD" }, { "start": "2022-01-01", "end": "2022-12-31", "val": 208461000, "accn": "0000765207-25-000018", "fy": 2024, "fp": "FY", "form": "10-K", "filed": "2025-03-07", "frame": "CY2022", "unit": "USD" }, { "start": "2021-01-01", "end": "2021-12-31", "val": 139478000, "accn": "0000765207-24-000010", "fy": 2023, "fp": "FY", "form": "10-K", "filed": "2024-03-08", "frame": "CY2021", "unit": "USD" }, { "start": "2020-01-01", "end": "2020-12-31", "val": 239152000, "accn": "0000765207-23-000010", "fy": 2022, "fp": "FY", "form": "10-K", "filed": "2023-03-10", "frame": "CY2020", "unit": "USD" }, { "start": "2019-01-01", "end": "2019-12-31", "val": 85526000, "accn": "0000765207-22-000010", "fy": 2021, "fp": "FY", "form": "10-K", "filed": "2022-03-11", "frame": "CY2019", "unit": "USD" }, { "start": "2018-01-01", "end": "2018-12-31", "val": 78164000, "accn": "0000765207-21-000013", "fy": 2020, "fp": "FY", "form": "10-K", "filed": "2021-03-05", "frame": "CY2018", "unit": "USD" }, { "start": "2017-01-01", "end": "2017-12-31", "val": 109628000, "accn": "0000765207-20-000010", "fy": 2019, "fp": "FY", "form": "10-K", "filed": "2020-03-06", "frame": "CY2017", "unit": "USD" }, { "start": "2016-01-01", "end": "2016-12-31", "val": 130054000, "accn": "0000765207-19-000008", "fy": 2018, "fp": "FY", "form": "10-K", "filed": "2019-03-08", "frame": "CY2016", "unit": "USD" }, { "start": "2015-01-01", "end": "2015-12-31", "val": 66847000, "accn": "0000765207-18-000008", "fy": 2017, "fp": "FY", "form": "10-K", "filed": "2018-03-14", "frame": "CY2015", "unit": "USD" }, { "start": "2014-01-01", "end": "2014-12-31", "val": -7225000, "accn": "0000765207-17-000008", "fy": 2016, "fp": "FY", "form": "10-K", "filed": "2017-03-10", "frame": "CY2014", "unit": "USD" }, { "start": "2013-01-01", "end": "2013-12-31", "val": 52585000, "accn": "0000765207-16-000060", "fy": 2015, "fp": "FY", "form": "10-K", "filed": "2016-03-11", "frame": "CY2013", "unit": "USD" }, { "start": "2012-01-01", "end": "2012-12-31", "val": -4910000, "accn": "0000765207-15-000010", "fy": 2014, "fp": "FY", "form": "10-K", "filed": "2015-03-13", "frame": "CY2012", "unit": "USD" }, { "start": "2011-01-01", "end": "2011-12-31", "val": -45633000, "accn": "0000765207-14-000009", "fy": 2013, "fp": "FY", "form": "10-K", "filed": "2014-03-14", "frame": "CY2011", "unit": "USD" }, { "start": "2010-01-01", "end": "2010-12-31", "val": 50986000, "accn": "0000765207-13-000009", "fy": 2012, "fp": "FY", "form": "10-K", "filed": "2013-03-08", "frame": "CY2010", "unit": "USD" }, { "start": "2009-01-01", "end": "2009-12-31", "val": -8418000, "accn": "0000765207-12-000010", "fy": 2011, "fp": "FY", "form": "10-K", "filed": "2012-03-12", "frame": "CY2009", "unit": "USD" }, { "start": "2008-01-01", "end": "2008-12-31", "val": 91892000, "accn": "0000765207-11-000023", "fy": 2010, "fp": "FY", "form": "10-K", "filed": "2011-03-11", "frame": "CY2008", "unit": "USD" } ] }, { "tag": "NetCashProvidedByUsedInInvestingActivities", "taxonomy": "us-gaap", "label": "Investing cash flow", "kind": "duration", "unitKind": "money", "meaning": "Net cash from investing activities, including asset purchases, disposals and investment transactions. 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Potential shares are included under the applicable dilution rules, not simply added to outstanding shares.", "observations": [ { "start": "2025-01-01", "end": "2025-12-31", "val": 11204567, "accn": "0000765207-26-000067", "fy": 2025, "fp": "FY", "form": "10-K", "filed": "2026-03-06", "frame": "CY2025", "unit": "shares" }, { "start": "2024-01-01", "end": "2024-12-31", "val": 11138835, "accn": "0000765207-26-000067", "fy": 2025, "fp": "FY", "form": "10-K", "filed": "2026-03-06", "frame": "CY2024", "unit": "shares" }, { "start": "2023-01-01", "end": "2023-12-31", "val": 11081888, "accn": "0000765207-26-000067", "fy": 2025, "fp": "FY", "form": "10-K", "filed": "2026-03-06", "frame": "CY2023", "unit": "shares" }, { "start": "2022-01-01", "end": "2022-12-31", "val": 11030658, "accn": "0000765207-25-000018", "fy": 2024, "fp": "FY", "form": "10-K", "filed": "2025-03-07", "frame": "CY2022", "unit": "shares" }, { "start": "2021-01-01", "end": "2021-12-31", "val": 10987179, "accn": "0000765207-24-000010", "fy": 2023, "fp": "FY", "form": "10-K", "filed": "2024-03-08", "frame": "CY2021", "unit": "shares" }, { "start": "2020-01-01", "end": "2020-12-31", "val": 10932818, "accn": "0000765207-23-000010", "fy": 2022, "fp": "FY", "form": "10-K", "filed": "2023-03-10", "frame": "CY2020", "unit": "shares" }, { "start": "2019-01-01", "end": "2019-12-31", "val": 10889309, "accn": "0000765207-22-000010", "fy": 2021, "fp": "FY", "form": "10-K", "filed": "2022-03-11", "frame": "CY2019", "unit": "shares" }, { "start": "2018-01-01", "end": "2018-12-31", "val": 10852474, "accn": "0000765207-21-000013", "fy": 2020, "fp": "FY", "form": "10-K", "filed": "2021-03-05", "frame": "CY2018", "unit": "shares" }, { "start": "2017-01-01", "end": "2017-12-31", "val": 10819018, "accn": "0000765207-20-000010", "fy": 2019, "fp": "FY", "form": "10-K", "filed": "2020-03-06", "frame": "CY2017", "unit": "shares" }, { "start": "2016-01-01", "end": "2016-12-31", "val": 10829802, "accn": "0000765207-19-000008", "fy": 2018, "fp": "FY", "form": "10-K", "filed": "2019-03-08", "frame": "CY2016", "unit": "shares" }, { "start": "2015-01-01", "end": "2015-12-31", "val": 10764869, "accn": "0000765207-18-000008", "fy": 2017, "fp": "FY", "form": "10-K", "filed": "2018-03-14", "frame": "CY2015", "unit": "shares" }, { "start": "2014-01-01", "end": "2014-12-31", "val": 10710864, "accn": "0000765207-17-000008", "fy": 2016, "fp": "FY", "form": "10-K", "filed": "2017-03-10", "frame": "CY2014", "unit": "shares" }, { "start": "2013-01-01", "end": "2013-12-31", "val": 10521055, "accn": "0000765207-16-000060", "fy": 2015, "fp": "FY", "form": "10-K", "filed": "2016-03-11", "frame": "CY2013", "unit": "shares" }, { "start": "2012-01-01", "end": "2012-12-31", "val": 9846531, "accn": "0000765207-15-000010", "fy": 2014, "fp": "FY", "form": "10-K", "filed": "2015-03-13", "frame": "CY2012", "unit": "shares" }, { "start": "2011-01-01", "end": "2011-12-31", "val": 9798229, "accn": "0000765207-14-000009", "fy": 2013, "fp": "FY", "form": "10-K", "filed": "2014-03-14", "frame": "CY2011", "unit": "shares" }, { "start": "2010-01-01", "end": "2010-12-31", "val": 9765486, "accn": "0000765207-13-000009", "fy": 2012, "fp": "FY", "form": "10-K", "filed": "2013-03-08", "frame": "CY2010", "unit": "shares" } ] }, { "tag": "EarningsPerShareBasic", "taxonomy": "us-gaap", "label": "Basic earnings per share", "kind": "duration", "unitKind": "per-share", "meaning": "Reported earnings or loss per basic common share or unit. Inspect attribution, share classes and restatements before comparing periods. This is not a market return.", "observations": [ { "start": "2025-01-01", "end": "2025-12-31", "val": 3.1, "accn": "0000765207-26-000067", "fy": 2025, "fp": "FY", "form": "10-K", "filed": "2026-03-06", "frame": "CY2025", "unit": "USD/shares" }, { "start": "2024-01-01", "end": "2024-12-31", "val": 2.45, "accn": "0000765207-26-000067", "fy": 2025, "fp": "FY", "form": "10-K", "filed": "2026-03-06", "frame": "CY2024", "unit": "USD/shares" }, { "start": "2023-01-01", "end": "2023-12-31", "val": 2.68, "accn": "0000765207-26-000067", "fy": 2025, "fp": "FY", "form": "10-K", "filed": "2026-03-06", "frame": "CY2023", "unit": "USD/shares" }, { "start": "2022-01-01", "end": "2022-12-31", "val": 3.56, "accn": "0000765207-25-000018", "fy": 2024, "fp": "FY", "form": "10-K", "filed": "2025-03-07", "frame": "CY2022", "unit": "USD/shares" }, { "start": "2021-01-01", "end": "2021-12-31", "val": 3.33, "accn": "0000765207-24-000010", "fy": 2023, "fp": "FY", "form": "10-K", "filed": "2024-03-08", "frame": "CY2021", "unit": "USD/shares" }, { "start": "2020-01-01", "end": "2020-12-31", "val": 2.5, "accn": "0000765207-23-000010", "fy": 2022, "fp": "FY", "form": "10-K", "filed": "2023-03-10", "frame": "CY2020", "unit": "USD/shares" }, { "start": "2019-01-01", "end": "2019-12-31", "val": 2.36, "accn": "0000765207-22-000010", "fy": 2021, "fp": "FY", "form": "10-K", "filed": "2022-03-11", "frame": "CY2019", "unit": "USD/shares" }, { "start": "2018-01-01", "end": "2018-12-31", "val": 2.18, "accn": "0000765207-21-000013", "fy": 2020, "fp": "FY", "form": "10-K", "filed": "2021-03-05", "frame": "CY2018", "unit": "USD/shares" }, { "start": "2017-01-01", "end": "2017-12-31", "val": 1.82, "accn": "0000765207-20-000010", "fy": 2019, "fp": "FY", "form": "10-K", "filed": "2020-03-06", "frame": "CY2017", "unit": "USD/shares" }, { "start": "2016-01-01", "end": "2016-12-31", "val": 1.68, "accn": "0000765207-19-000008", "fy": 2018, "fp": "FY", "form": "10-K", "filed": "2019-03-08", "frame": "CY2016", "unit": "USD/shares" }, { "start": "2015-01-01", "end": "2015-12-31", "val": 1.52, "accn": "0000765207-18-000008", "fy": 2017, "fp": "FY", "form": "10-K", "filed": "2018-03-14", "frame": "CY2015", "unit": "USD/shares" }, { "start": "2014-01-01", "end": "2014-12-31", "val": 1.38, "accn": "0000765207-17-000008", "fy": 2016, "fp": "FY", "form": "10-K", "filed": "2017-03-10", "frame": "CY2014", "unit": "USD/shares" }, { "start": "2013-01-01", "end": "2013-12-31", "val": 1.2, "accn": "0000765207-16-000060", "fy": 2015, "fp": "FY", "form": "10-K", "filed": "2016-03-11", "frame": "CY2013", "unit": "USD/shares" }, { "start": "2012-01-01", "end": "2012-12-31", "val": 1.22, "accn": "0000765207-15-000010", "fy": 2014, "fp": "FY", "form": "10-K", "filed": "2015-03-13", "frame": "CY2012", "unit": "USD/shares" }, { "start": "2011-01-01", "end": "2011-12-31", "val": 1.14, "accn": "0000765207-14-000009", "fy": 2013, "fp": "FY", "form": "10-K", "filed": "2014-03-14", "frame": "CY2011", "unit": "USD/shares" }, { "start": "2010-01-01", "end": "2010-12-31", "val": 1.1, "accn": "0000765207-13-000009", "fy": 2012, "fp": "FY", "form": "10-K", "filed": "2013-03-08", "frame": "CY2010", "unit": "USD/shares" }, { "start": "2009-01-01", "end": "2009-12-31", "val": 1.22, "accn": "0000765207-12-000010", "fy": 2011, "fp": "FY", "form": "10-K", "filed": "2012-03-12", "frame": "CY2009", "unit": "USD/shares" }, { "start": "2008-01-01", "end": "2008-12-31", "val": 1.45, "accn": "0000765207-11-000023", "fy": 2010, "fp": "FY", "form": "10-K", "filed": "2011-03-11", "frame": "CY2008", "unit": "USD/shares" } ] }, { "tag": "EarningsPerShareDiluted", "taxonomy": "us-gaap", "label": "Diluted earnings per share", "kind": "duration", "unitKind": "per-share", "meaning": "Reported earnings or loss per share under dilution rules. Antidilutive instruments may be excluded. A diluted value can equal the basic value without implying no potential dilution.", "observations": [ { "start": "2025-01-01", "end": "2025-12-31", "val": 3.07, "accn": "0000765207-26-000067", "fy": 2025, "fp": "FY", "form": "10-K", "filed": "2026-03-06", "frame": "CY2025", "unit": "USD/shares" }, { "start": "2024-01-01", "end": "2024-12-31", "val": 2.43, "accn": "0000765207-26-000067", "fy": 2025, "fp": "FY", "form": "10-K", "filed": "2026-03-06", "frame": "CY2024", "unit": "USD/shares" }, { "start": "2023-01-01", "end": "2023-12-31", "val": 2.66, "accn": "0000765207-26-000067", "fy": 2025, "fp": "FY", "form": "10-K", "filed": "2026-03-06", "frame": "CY2023", "unit": "USD/shares" }, { "start": "2022-01-01", "end": "2022-12-31", "val": 3.53, "accn": "0000765207-25-000018", "fy": 2024, "fp": "FY", "form": "10-K", "filed": "2025-03-07", "frame": "CY2022", "unit": "USD/shares" }, { "start": "2021-01-01", "end": "2021-12-31", "val": 3.3, "accn": "0000765207-24-000010", "fy": 2023, "fp": "FY", "form": "10-K", "filed": "2024-03-08", "frame": "CY2021", "unit": "USD/shares" }, { "start": "2020-01-01", "end": "2020-12-31", "val": 2.48, "accn": "0000765207-23-000010", "fy": 2022, "fp": "FY", "form": "10-K", "filed": "2023-03-10", "frame": "CY2020", "unit": "USD/shares" }, { "start": "2019-01-01", "end": "2019-12-31", "val": 2.34, "accn": "0000765207-22-000010", "fy": 2021, "fp": "FY", "form": "10-K", "filed": "2022-03-11", "frame": "CY2019", "unit": "USD/shares" }, { "start": "2018-01-01", "end": "2018-12-31", "val": 2.17, "accn": "0000765207-21-000013", "fy": 2020, "fp": "FY", "form": "10-K", "filed": "2021-03-05", "frame": "CY2018", "unit": "USD/shares" }, { "start": "2017-01-01", "end": "2017-12-31", "val": 1.81, "accn": "0000765207-20-000010", "fy": 2019, "fp": "FY", "form": "10-K", "filed": "2020-03-06", "frame": "CY2017", "unit": "USD/shares" }, { "start": "2016-01-01", "end": "2016-12-31", "val": 1.66, "accn": "0000765207-19-000008", "fy": 2018, "fp": "FY", "form": "10-K", "filed": "2019-03-08", "frame": "CY2016", "unit": "USD/shares" }, { "start": "2015-01-01", "end": "2015-12-31", "val": 1.51, "accn": "0000765207-18-000008", "fy": 2017, "fp": "FY", "form": "10-K", "filed": "2018-03-14", "frame": "CY2015", "unit": "USD/shares" }, { "start": "2014-01-01", "end": "2014-12-31", "val": 1.37, "accn": "0000765207-17-000008", "fy": 2016, "fp": "FY", "form": "10-K", "filed": "2017-03-10", "frame": "CY2014", "unit": "USD/shares" }, { "start": "2013-01-01", "end": "2013-12-31", "val": 1.2, "accn": "0000765207-16-000060", "fy": 2015, "fp": "FY", "form": "10-K", "filed": "2016-03-11", "frame": "CY2013", "unit": "USD/shares" }, { "start": "2012-01-01", "end": "2012-12-31", "val": 1.22, "accn": "0000765207-15-000010", "fy": 2014, "fp": "FY", "form": "10-K", "filed": "2015-03-13", "frame": "CY2012", "unit": "USD/shares" }, { "start": "2011-01-01", "end": "2011-12-31", "val": 1.14, "accn": "0000765207-14-000009", "fy": 2013, "fp": "FY", "form": "10-K", "filed": "2014-03-14", "frame": "CY2011", "unit": "USD/shares" }, { "start": "2010-01-01", "end": "2010-12-31", "val": 1.1, "accn": "0000765207-13-000009", "fy": 2012, "fp": "FY", "form": "10-K", "filed": "2013-03-08", "frame": "CY2010", "unit": "USD/shares" }, { "start": "2009-01-01", "end": "2009-12-31", "val": 1.22, "accn": "0000765207-12-000010", "fy": 2011, "fp": "FY", "form": "10-K", "filed": "2012-03-12", "frame": "CY2009", "unit": "USD/shares" }, { "start": "2008-01-01", "end": "2008-12-31", "val": 1.44, "accn": "0000765207-11-000023", "fy": 2010, "fp": "FY", "form": "10-K", "filed": "2011-03-11", "frame": "CY2008", "unit": "USD/shares" } ] }, { "tag": "IncomeTaxExpenseBenefit", "taxonomy": "us-gaap", "label": "Income tax expense or benefit", "kind": "duration", "unitKind": "money", "meaning": "Current and deferred income tax expense or benefit for continuing operations. 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