{
  "schema": "canli.company-reference.v1",
  "cik": "0000350852",
  "name": "COMMUNITY TRUST BANCORP, INC.",
  "selection_policy": "extended-v22",
  "source_url": "https://data.sec.gov/api/xbrl/companyfacts/CIK0000350852.json",
  "source_sha256": "9b2c8cb1de5dc633ea97d77792dcb69935088ce7331aa2b01cfe1d6599b1aacf",
  "fetched_at": "2026-09-19T14:56:59.871Z",
  "policy": "Latest-filed annual-report facts per unit and reporting period at capture time. Duration facts cover 300 to 400 days. This selection can include restatements and is not a point-in-time backtest dataset. Missing concepts are omitted, never zero-filled. Values retain original units and are not currency converted. Extended concepts require compatible unit shapes and at least three reporting ends with changing values within one unit. Constant or incompatible added histories are omitted.",
  "claim_boundary": "Public company accounting reference, not market prices, returns, an investment recommendation, or ALPHAC performance. 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. Book assets are not the market value of the business.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 6684138000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 6193245000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 5769696000,
          "accn": "0001140361-25-006428",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-02-28",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 5380316000,
          "accn": "0001140361-24-009933",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-02-28",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 5418257000,
          "accn": "0001140361-23-009057",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-02-28",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 5139141000,
          "accn": "0001140361-22-006937",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-02-28",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 4366003000,
          "accn": "0001140361-21-006318",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-02-26",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 4201616000,
          "accn": "0001140361-20-004386",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-28",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 4136231000,
          "accn": "0000350852-19-000039",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 3932169000,
          "accn": "0000350852-18-000045",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-02-28",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 3903934000,
          "accn": "0000350852-17-000031",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-15",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 3723765000,
          "accn": "0000350852-16-000152",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 3581716000,
          "accn": "0000350852-15-000038",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 3635664000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 3591179000,
          "accn": "0000350852-13-000041",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 3355872000,
          "accn": "0000350852-12-000047",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-15",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "Liabilities",
      "taxonomy": "us-gaap",
      "label": "Total liabilities",
      "kind": "instant",
      "meaning": "Recognized obligations at the reporting date. The definition and scope differ from interest-bearing debt.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 5828066000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 5435661000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 5067488000,
          "accn": "0001140361-25-006428",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-02-28",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 4752269000,
          "accn": "0001140361-24-009933",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-02-28",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 4720055000,
          "accn": "0001140361-23-009057",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-02-28",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 4484276000,
          "accn": "0001140361-22-006937",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-02-28",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 3751117000,
          "accn": "0001140361-21-006318",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-02-26",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 3637466000,
          "accn": "0001140361-20-004386",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-28",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 3605532000,
          "accn": "0000350852-19-000039",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 3431554000,
          "accn": "0000350852-18-000045",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-02-28",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 3428351000,
          "accn": "0000350852-17-000031",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-15",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 3275888000,
          "accn": "0000350852-16-000152",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 3169224000,
          "accn": "0000350852-15-000038",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 3235320000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 3224313000,
          "accn": "0000350852-13-000041",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 3017234000,
          "accn": "0000350852-12-000047",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-15",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "StockholdersEquity",
      "taxonomy": "us-gaap",
      "label": "Stockholders equity",
      "kind": "instant",
      "meaning": "The reported residual interest after liabilities. It is an accounting amount, not market capitalization.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 856072000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 757584000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 702208000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 628047000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 698202000,
          "accn": "0001140361-25-006428",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-02-28",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 654865000,
          "accn": "0001140361-24-009933",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-02-28",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 614886000,
          "accn": "0001140361-23-009057",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-02-28",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 564150000,
          "accn": "0001140361-22-006937",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-02-28",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 530699000,
          "accn": "0001140361-21-006318",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-02-26",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 500615000,
          "accn": "0001140361-20-004386",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-28",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 475583000,
          "accn": "0000350852-17-000031",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-15",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 447877000,
          "accn": "0000350852-16-000152",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 412492000,
          "accn": "0000350852-15-000038",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 400344000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 366866000,
          "accn": "0000350852-13-000041",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 338638000,
          "accn": "0000350852-12-000047",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-15",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "CashAndCashEquivalentsAtCarryingValue",
      "taxonomy": "us-gaap",
      "label": "Cash and cash equivalents",
      "kind": "instant",
      "meaning": "Cash and qualifying short-term liquid investments under the filer’s accounting policy. Restricted cash and longer-term investments may be reported separately.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 363684000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 369505000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 271400000,
          "accn": "0001140361-25-006428",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-02-28",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 128686000,
          "accn": "0001140361-24-009933",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-02-28",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 311756000,
          "accn": "0001140361-23-009057",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-02-28",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 338235000,
          "accn": "0001140361-22-006937",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-02-28",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 264683000,
          "accn": "0001140361-21-006318",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-02-26",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 141450000,
          "accn": "0001140361-20-004386",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-28",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 175274000,
          "accn": "0000350852-19-000039",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 144716000,
          "accn": "0000350852-19-000039",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 187611000,
          "accn": "0000350852-19-000039",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 105517000,
          "accn": "0000350852-18-000045",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-02-28",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 106641000,
          "accn": "0000350852-17-000031",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-15",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 207560000,
          "accn": "0000350852-16-000152",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 238481000,
          "accn": "0000350852-15-000038",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 158983000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2010Q4I",
          "unit": "USD"
        },
        {
          "end": "2009-12-31",
          "val": 142129000,
          "accn": "0000350852-13-000041",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2009Q4I",
          "unit": "USD"
        },
        {
          "end": "2008-12-31",
          "val": 140878000,
          "accn": "0000350852-12-000047",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-15",
          "frame": "CY2008Q4I",
          "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": 98058000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 82813000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 78004000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 81814000,
          "accn": "0001140361-25-006428",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-02-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 87939000,
          "accn": "0001140361-24-009933",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-02-28",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 59504000,
          "accn": "0001140361-23-009057",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-02-28",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 64540000,
          "accn": "0001140361-22-006937",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-02-28",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 59228000,
          "accn": "0001140361-21-006318",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-02-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 51493000,
          "accn": "0001140361-20-004386",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-28",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 47346000,
          "accn": "0000350852-19-000039",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 46432000,
          "accn": "0000350852-18-000045",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-02-28",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 43251000,
          "accn": "0000350852-17-000031",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-15",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 45172000,
          "accn": "0000350852-16-000152",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 44862000,
          "accn": "0000350852-15-000038",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 38827000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 33034000,
          "accn": "0000350852-13-000041",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 25059000,
          "accn": "0000350852-12-000047",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-15",
          "frame": "CY2009",
          "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": 104991000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 105326000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 85850000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 99684000,
          "accn": "0001140361-25-006428",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-02-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 115695000,
          "accn": "0001140361-24-009933",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-02-28",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 62379000,
          "accn": "0001140361-23-009057",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-02-28",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 83458000,
          "accn": "0001140361-22-006937",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-02-28",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 65487000,
          "accn": "0001140361-21-006318",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-02-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 62351000,
          "accn": "0001140361-20-004386",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-28",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 61425000,
          "accn": "0000350852-19-000039",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 54979000,
          "accn": "0000350852-18-000045",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-02-28",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 90716000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 57896000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 64326000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 61304000,
          "accn": "0000350852-13-000041",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 37709000,
          "accn": "0000350852-12-000047",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-15",
          "frame": "CY2009",
          "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": 7603000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 8078000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 6322000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 6218000,
          "accn": "0001140361-25-006428",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-02-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 2373000,
          "accn": "0001140361-24-009933",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-02-28",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 1482000,
          "accn": "0001140361-23-009057",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-02-28",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 2570000,
          "accn": "0001140361-22-006937",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-02-28",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 2832000,
          "accn": "0001140361-21-006318",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-02-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 2400000,
          "accn": "0001140361-20-004386",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-28",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 3498000,
          "accn": "0000350852-19-000039",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 2246000,
          "accn": "0000350852-18-000045",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-02-28",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 2081000,
          "accn": "0000350852-17-000031",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-15",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 2105000,
          "accn": "0000350852-16-000152",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 4301000,
          "accn": "0000350852-15-000038",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 3116000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 2426000,
          "accn": "0000350852-13-000041",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 2265000,
          "accn": "0000350852-12-000047",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-15",
          "frame": "CY2009",
          "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": 352408000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 328452000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 283463000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": -2747000,
          "accn": "0001140361-25-006428",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-02-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 216446000,
          "accn": "0001140361-24-009933",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-02-28",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 704699000,
          "accn": "0001140361-23-009057",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-02-28",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 74266000,
          "accn": "0001140361-22-006937",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-02-28",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 1279000,
          "accn": "0001140361-21-006318",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-02-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 154793000,
          "accn": "0001140361-20-004386",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-28",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -18213000,
          "accn": "0000350852-19-000039",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 135464000,
          "accn": "0000350852-18-000045",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-02-28",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -69589000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -17854000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 187465000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 67353000,
          "accn": "0000350852-13-000041",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 97838000,
          "accn": "0000350852-12-000047",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-15",
          "frame": "CY2009",
          "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. This differs from capital expenditure payments alone.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": -463220000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": -335673000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": -226599000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": -280007000,
          "accn": "0001140361-25-006428",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-02-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -358620000,
          "accn": "0001140361-24-009933",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-02-28",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -693526000,
          "accn": "0001140361-23-009057",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-02-28",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": -34491000,
          "accn": "0001140361-22-006937",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-02-28",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -100590000,
          "accn": "0001140361-21-006318",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-02-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -186586000,
          "accn": "0001140361-20-004386",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-28",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -86107000,
          "accn": "0000350852-19-000039",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -108349000,
          "accn": "0000350852-18-000045",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-02-28",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -122046000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -70963000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -172293000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -111803000,
          "accn": "0000350852-13-000041",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": -134296000,
          "accn": "0000350852-12-000047",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-15",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "RetainedEarningsAccumulatedDeficit",
      "taxonomy": "us-gaap",
      "label": "Retained earnings or deficit",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Accumulated undistributed earnings or deficit at the reporting date. This balance is not cash available for distribution.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 593888000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 531861000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 484400000,
          "accn": "0001140361-25-006428",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-02-28",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 438596000,
          "accn": "0001140361-24-009933",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-02-28",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 386750000,
          "accn": "0001140361-23-009057",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-02-28",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 326738000,
          "accn": "0001140361-22-006937",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-02-28",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 296760000,
          "accn": "0001140361-21-006318",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-02-26",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 258935000,
          "accn": "0001140361-20-004386",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-28",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 224268000,
          "accn": "0000350852-19-000039",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 195078000,
          "accn": "0000350852-18-000045",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-02-28",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 169855000,
          "accn": "0000350852-17-000031",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-15",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 144697000,
          "accn": "0000350852-16-000152",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 174289000,
          "accn": "0000350852-15-000038",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 148944000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 123431000,
          "accn": "0000350852-13-000041",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 103439000,
          "accn": "0000350852-12-000047",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-15",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "WeightedAverageNumberOfSharesOutstandingBasic",
      "taxonomy": "us-gaap",
      "label": "Basic weighted-average shares",
      "kind": "duration",
      "unitKind": "shares",
      "meaning": "Time-weighted shares used for basic earnings per share. This denominator differs from shares outstanding at a single reporting date.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": 18013000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2025",
          "unit": "shares"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 17950000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2024",
          "unit": "shares"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 17887000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2023",
          "unit": "shares"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 17836000,
          "accn": "0001140361-25-006428",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-02-28",
          "frame": "CY2022",
          "unit": "shares"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 17786000,
          "accn": "0001140361-24-009933",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-02-28",
          "frame": "CY2021",
          "unit": "shares"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 17748000,
          "accn": "0001140361-23-009057",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-02-28",
          "frame": "CY2020",
          "unit": "shares"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 17724000,
          "accn": "0001140361-22-006937",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-02-28",
          "frame": "CY2019",
          "unit": "shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 17687000,
          "accn": "0001140361-21-006318",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-02-26",
          "frame": "CY2018",
          "unit": "shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 17631000,
          "accn": "0001140361-20-004386",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-28",
          "frame": "CY2017",
          "unit": "shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 17548000,
          "accn": "0000350852-19-000039",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 17431000,
          "accn": "0000350852-18-000045",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-02-28",
          "frame": "CY2015",
          "unit": "shares"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 17326000,
          "accn": "0000350852-17-000031",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-15",
          "frame": "CY2014",
          "unit": "shares"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 17158000,
          "accn": "0000350852-16-000152",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2013",
          "unit": "shares"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 17013000,
          "accn": "0000350852-15-000038",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "shares"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 15313000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "shares"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 15233858,
          "accn": "0000350852-13-000041",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "unit": "shares"
        }
      ]
    },
    {
      "tag": "WeightedAverageNumberOfDilutedSharesOutstanding",
      "taxonomy": "us-gaap",
      "label": "Diluted weighted-average shares",
      "kind": "duration",
      "unitKind": "shares",
      "meaning": "Weighted-average shares used for diluted earnings per share. 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": 18044000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2025",
          "unit": "shares"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 17977000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2024",
          "unit": "shares"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 17900000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2023",
          "unit": "shares"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 17851000,
          "accn": "0001140361-25-006428",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-02-28",
          "frame": "CY2022",
          "unit": "shares"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 17804000,
          "accn": "0001140361-24-009933",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-02-28",
          "frame": "CY2021",
          "unit": "shares"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 17756000,
          "accn": "0001140361-23-009057",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-02-28",
          "frame": "CY2020",
          "unit": "shares"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 17740000,
          "accn": "0001140361-22-006937",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-02-28",
          "frame": "CY2019",
          "unit": "shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 17703000,
          "accn": "0001140361-21-006318",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-02-26",
          "frame": "CY2018",
          "unit": "shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 17653000,
          "accn": "0001140361-20-004386",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-28",
          "frame": "CY2017",
          "unit": "shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 17566000,
          "accn": "0000350852-19-000039",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 17483000,
          "accn": "0000350852-18-000045",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-02-28",
          "frame": "CY2015",
          "unit": "shares"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 17397000,
          "accn": "0000350852-17-000031",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-15",
          "frame": "CY2014",
          "unit": "shares"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 17240000,
          "accn": "0000350852-16-000152",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2013",
          "unit": "shares"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 17073000,
          "accn": "0000350852-15-000038",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "shares"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 15364000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "shares"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 15258794,
          "accn": "0000350852-13-000041",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "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": 5.44,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2025",
          "unit": "USD/shares"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 4.61,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2024",
          "unit": "USD/shares"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 4.36,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2023",
          "unit": "USD/shares"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 4.59,
          "accn": "0001140361-25-006428",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-02-28",
          "frame": "CY2022",
          "unit": "USD/shares"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 4.94,
          "accn": "0001140361-24-009933",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-02-28",
          "frame": "CY2021",
          "unit": "USD/shares"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 3.35,
          "accn": "0001140361-23-009057",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-02-28",
          "frame": "CY2020",
          "unit": "USD/shares"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 3.64,
          "accn": "0001140361-22-006937",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-02-28",
          "frame": "CY2019",
          "unit": "USD/shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 3.35,
          "accn": "0001140361-21-006318",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-02-26",
          "frame": "CY2018",
          "unit": "USD/shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 2.92,
          "accn": "0001140361-20-004386",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-28",
          "frame": "CY2017",
          "unit": "USD/shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 2.7,
          "accn": "0000350852-19-000039",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD/shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 2.66,
          "accn": "0000350852-18-000045",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-02-28",
          "frame": "CY2015",
          "unit": "USD/shares"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 2.5,
          "accn": "0000350852-17-000031",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-15",
          "frame": "CY2014",
          "unit": "USD/shares"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 2.63,
          "accn": "0000350852-16-000152",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2013",
          "unit": "USD/shares"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 2.64,
          "accn": "0000350852-15-000038",
          "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": 2.54,
          "accn": "0000350852-14-000034",
          "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": 2.17,
          "accn": "0000350852-13-000041",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "unit": "USD/shares"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 1.66,
          "accn": "0000350852-12-000047",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-15",
          "frame": "CY2009",
          "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": 5.43,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2025",
          "unit": "USD/shares"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 4.61,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2024",
          "unit": "USD/shares"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 4.36,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2023",
          "unit": "USD/shares"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 4.58,
          "accn": "0001140361-25-006428",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-02-28",
          "frame": "CY2022",
          "unit": "USD/shares"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 4.94,
          "accn": "0001140361-24-009933",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-02-28",
          "frame": "CY2021",
          "unit": "USD/shares"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 3.35,
          "accn": "0001140361-23-009057",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-02-28",
          "frame": "CY2020",
          "unit": "USD/shares"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 3.64,
          "accn": "0001140361-22-006937",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-02-28",
          "frame": "CY2019",
          "unit": "USD/shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 3.35,
          "accn": "0001140361-21-006318",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-02-26",
          "frame": "CY2018",
          "unit": "USD/shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 2.92,
          "accn": "0001140361-20-004386",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-28",
          "frame": "CY2017",
          "unit": "USD/shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 2.7,
          "accn": "0000350852-19-000039",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD/shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 2.66,
          "accn": "0000350852-18-000045",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-02-28",
          "frame": "CY2015",
          "unit": "USD/shares"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 2.49,
          "accn": "0000350852-17-000031",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-15",
          "frame": "CY2014",
          "unit": "USD/shares"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 2.62,
          "accn": "0000350852-16-000152",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2013",
          "unit": "USD/shares"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 2.63,
          "accn": "0000350852-15-000038",
          "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": 2.53,
          "accn": "0000350852-14-000034",
          "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": 2.16,
          "accn": "0000350852-13-000041",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "unit": "USD/shares"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 1.65,
          "accn": "0000350852-12-000047",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-15",
          "frame": "CY2009",
          "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. This accounting expense differs from cash taxes paid.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": 29034000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 23873000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 20564000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 19228000,
          "accn": "0001140361-25-006428",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-02-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 22704000,
          "accn": "0001140361-24-009933",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-02-28",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 10761000,
          "accn": "0001140361-23-009057",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-02-28",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 7452000,
          "accn": "0001140361-22-006937",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-02-28",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 11314000,
          "accn": "0001140361-21-006318",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-02-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 17018000,
          "accn": "0001140361-20-004386",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-28",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 19118000,
          "accn": "0000350852-19-000039",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 18531000,
          "accn": "0000350852-18-000045",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-02-28",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 19146000,
          "accn": "0000350852-17-000031",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-15",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 20000000,
          "accn": "0000350852-16-000152",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 20225000,
          "accn": "0000350852-15-000038",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 16811000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 14612000,
          "accn": "0000350852-13-000041",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 10602000,
          "accn": "0000350852-12-000047",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-15",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "PropertyPlantAndEquipmentNet",
      "taxonomy": "us-gaap",
      "label": "Net property, plant and equipment",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Carrying amount of property, plant and equipment after accumulated depreciation, depletion and amortization. It is not replacement cost or market value.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 52611000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 49630000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 45311000,
          "accn": "0001140361-25-006428",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-02-28",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 42633000,
          "accn": "0001140361-24-009933",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-02-28",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 40479000,
          "accn": "0001140361-23-009057",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-02-28",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 42001000,
          "accn": "0001140361-22-006937",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-02-28",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 44046000,
          "accn": "0001140361-21-006318",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-02-26",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 45291000,
          "accn": "0001140361-20-004386",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-28",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 46318000,
          "accn": "0000350852-19-000039",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 47940000,
          "accn": "0000350852-18-000045",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-02-28",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 48188000,
          "accn": "0000350852-17-000031",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-15",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 49980000,
          "accn": "0000350852-16-000152",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 52000000,
          "accn": "0000350852-15-000038",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 54321000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 54297000,
          "accn": "0000350852-13-000041",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 55343000,
          "accn": "0000350852-12-000047",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-15",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "ShareBasedCompensation",
      "taxonomy": "us-gaap",
      "label": "Share-based compensation expense",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Reported noncash expense for share-based payment arrangements. Noncash treatment does not mean the awards have no economic cost to shareholders.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": 1774000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 1354000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 1576000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 1366000,
          "accn": "0001140361-25-006428",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-02-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 850000,
          "accn": "0001140361-24-009933",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-02-28",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 944000,
          "accn": "0001140361-23-009057",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-02-28",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 859000,
          "accn": "0001140361-22-006937",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-02-28",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 710000,
          "accn": "0001140361-21-006318",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-02-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 636000,
          "accn": "0001140361-20-004386",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-28",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 458000,
          "accn": "0000350852-19-000039",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 783000,
          "accn": "0000350852-18-000045",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-02-28",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 852000,
          "accn": "0000350852-17-000031",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-15",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 698000,
          "accn": "0000350852-16-000152",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 592000,
          "accn": "0000350852-15-000038",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 650000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 804000,
          "accn": "0000350852-13-000041",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 536000,
          "accn": "0000350852-12-000047",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-15",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "InterestExpense",
      "taxonomy": "us-gaap",
      "label": "Interest expense",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Borrowing costs recognized as interest expense. This is distinct from cash interest paid and may not include every capitalized borrowing cost.",
      "observations": [
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 95540000,
          "accn": "0001140361-24-009933",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-02-28",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 28640000,
          "accn": "0001140361-24-009933",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-02-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 15090000,
          "accn": "0001140361-24-009933",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-02-28",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 25450000,
          "accn": "0001140361-23-009057",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-02-28",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 40513000,
          "accn": "0001140361-22-006937",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-02-28",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 29295000,
          "accn": "0001140361-21-006318",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-02-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 18294000,
          "accn": "0001140361-20-004386",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-28",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 13555000,
          "accn": "0000350852-19-000039",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 11773000,
          "accn": "0000350852-18-000045",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-02-28",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 11797000,
          "accn": "0000350852-17-000031",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-15",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 13440000,
          "accn": "0000350852-16-000152",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 21588000,
          "accn": "0000350852-15-000038",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 27005000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 35257000,
          "accn": "0000350852-13-000041",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 47540000,
          "accn": "0000350852-12-000047",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-15",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "Goodwill",
      "taxonomy": "us-gaap",
      "label": "Goodwill carrying amount",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Recognized goodwill remaining after accumulated impairment. It arises from business combinations and does not measure the current value of the company’s brand.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 65490000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 65490000,
          "accn": "0001140361-26-007058",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-02-27",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 65490000,
          "accn": "0001140361-25-006428",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-02-28",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 65490000,
          "accn": "0001140361-24-009933",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-02-28",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 65490000,
          "accn": "0001140361-23-009057",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-02-28",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 65490000,
          "accn": "0001140361-22-006937",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-02-28",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 65490000,
          "accn": "0001140361-21-006318",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-02-26",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 65490000,
          "accn": "0001140361-20-004386",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-28",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 65490000,
          "accn": "0000350852-19-000039",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 65490000,
          "accn": "0000350852-18-000045",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-02-28",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 65490000,
          "accn": "0000350852-17-000031",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-15",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 65490000,
          "accn": "0000350852-16-000152",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 65490000,
          "accn": "0000350852-15-000038",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 65490000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 65490000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 65499000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2010Q4I",
          "unit": "USD"
        },
        {
          "end": "2009-12-31",
          "val": 65059000,
          "accn": "0000350852-13-000041",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2009Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "FiniteLivedIntangibleAssetsNet",
      "taxonomy": "us-gaap",
      "label": "Net finite-lived intangible assets",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Finite-lived intangible assets after amortization. This excludes goodwill and should not be combined with indefinite-lived intangible assets without checking scope.",
      "observations": [
        {
          "end": "2017-12-31",
          "val": 0,
          "accn": "0000350852-18-000045",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-02-28",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 133000,
          "accn": "0000350852-18-000045",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-02-28",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 291000,
          "accn": "0000350852-17-000031",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-15",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 477000,
          "accn": "0000350852-16-000152",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 690000,
          "accn": "0000350852-15-000038",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 904000,
          "accn": "0000350852-14-000034",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 1117000,
          "accn": "0000350852-13-000041",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 1342000,
          "accn": "0000350852-12-000047",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-15",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "PaymentsForRepurchaseOfCommonStock",
      "taxonomy": "us-gaap",
      "label": "Common-stock repurchase payments",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Cash paid to reacquire common stock during the period. This is not an authorization limit or a direct measure of the net change in share count.",
      "observations": [
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 0,
          "accn": "0001140361-23-009057",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-02-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 0,
          "accn": "0001140361-23-009057",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-02-28",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 1099000,
          "accn": "0001140361-23-009057",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-02-28",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 0,
          "accn": "0001140361-22-006937",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-02-28",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 0,
          "accn": "0001140361-21-006318",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-02-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 0,
          "accn": "0000350852-19-000039",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 382000,
          "accn": "0000350852-19-000039",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 189000,
          "accn": "0000350852-18-000045",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-02-28",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 0,
          "accn": "0000350852-17-000031",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-15",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 0,
          "accn": "0000350852-16-000152",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2013",
          "unit": "USD"
        }
      ]
    }
  ],
  "source_snapshot": "/company-data/sources/9b2c8cb1de5dc633ea97d77792dcb69935088ce7331aa2b01cfe1d6599b1aacf.json.gz"
}
