{
  "schema": "canli.company-reference.v1",
  "cik": "0000842518",
  "name": "EVANS BANCORP, INC.",
  "selection_policy": "extended-v23",
  "source_url": "https://data.sec.gov/api/xbrl/companyfacts/CIK0000842518.json",
  "source_sha256": "a4e12a51af7fd0b8717d7895f18924af4baf3030718709f857979afc63111542",
  "fetched_at": "2026-09-21T17:17:34.038Z",
  "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": "2024-12-31",
          "val": 2187465000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 2108663000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 2178510000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 2210640000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 2044115000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 1460230000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 1388207000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 1295633000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 1100709000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 939107000,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 846809000,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 833498000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 809676000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 740902000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 671523000,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "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": "2024-12-31",
          "val": 2004322000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 1930444000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 2024517000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 2026748000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 1875210000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 1311777000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 1256561000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 1177291000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 1003961000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 847851000,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 761021000,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 752786000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 734848000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 671914000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 608459000,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "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": "2024-12-31",
          "val": 183143000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 178219000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 153993000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 183892000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 168905000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 148453000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 131646000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 118342000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 96748000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 91256000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 85788000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 80712000,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 74828000,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 68988000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 63064000,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "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": "2020-12-31",
          "val": 97604000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 38857000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 39915000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 21330000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 13084000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 22621000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 10898000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 41954000,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 90477000,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 14678000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 13722000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2010Q4I",
          "unit": "USD"
        },
        {
          "end": "2009-12-31",
          "val": 12983000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2009Q4I",
          "unit": "USD"
        },
        {
          "end": "2008-12-31",
          "val": 9151000,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "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": "2015-01-01",
          "end": "2015-12-31",
          "val": 7843000,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 8187000,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 7857000,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 8132000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 6112000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 4840000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 707000,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "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": "2024-01-01",
          "end": "2024-12-31",
          "val": -2757000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 15699000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 26407000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 20512000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 7787000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 21073000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 25123000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 13480000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 11540000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 8098000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 11021000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 13101000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 12602000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 10815000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 9614000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 10697000,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "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": "2024-01-01",
          "end": "2024-12-31",
          "val": 343000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 517000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 1008000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 1033000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 5822000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 4640000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 1106000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 483000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 1452000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 1888000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 580000,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 1448000,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 2002000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 726000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 2767000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 196000,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "RevenueFromContractWithCustomerExcludingAssessedTax",
      "taxonomy": "us-gaap",
      "label": "Contract revenue excluding tax",
      "kind": "duration",
      "meaning": "Revenue from customer contracts excluding assessed taxes under this specific taxonomy concept. It is not automatically comparable to older revenue tags.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 655000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 10261000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 10453000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 10457000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 10610000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 10688000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 9365000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 7898000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 6519000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "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": "2024-01-01",
          "end": "2024-12-31",
          "val": 73115000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": -104653000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": -11563000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 149289000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 264351000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 47751000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 76029000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 181289000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 151768000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 86090000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 2733000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 17908000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 60533000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 60576000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 46443000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 39731000,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "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": "2024-01-01",
          "end": "2024-12-31",
          "val": -51109000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 89367000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": -236575000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -22620000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -213391000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": -69882000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -82567000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -186523000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -172845000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -82465000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -44810000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -79532000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 2664000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -70435000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -55318000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": -46596000,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "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": "2024-12-31",
          "val": 142943000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 138631000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 123356000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 108024000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 90522000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 85267000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 73345000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 59921000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 52630000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 47616000,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 42822000,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 37370000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 30611000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 25304000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 20836000,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "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": "2024-01-01",
          "end": "2024-12-31",
          "val": 5527422,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024",
          "unit": "shares"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 5456250,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023",
          "unit": "shares"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 5495044,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2022",
          "unit": "shares"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 5447057,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2021",
          "unit": "shares"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 5232881,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2020",
          "unit": "shares"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 4897803,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2019",
          "unit": "shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 4814882,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2018",
          "unit": "shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 4738394,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2017",
          "unit": "shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 4281885,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 4235048,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2015",
          "unit": "shares"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 4186786,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "shares"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 4189769,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2013",
          "unit": "shares"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 4144322,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2012",
          "unit": "shares"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 4102142,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2011",
          "unit": "shares"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 3613746,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2010",
          "unit": "shares"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 2788507,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "frame": "CY2009",
          "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": "2024-01-01",
          "end": "2024-12-31",
          "val": 5541373,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024",
          "unit": "shares"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 5471033,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023",
          "unit": "shares"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 5536375,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2022",
          "unit": "shares"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 5501511,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2021",
          "unit": "shares"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 5268560,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2020",
          "unit": "shares"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 4968172,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2019",
          "unit": "shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 4933743,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2018",
          "unit": "shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 4860828,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2017",
          "unit": "shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 4358517,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 4307368,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2015",
          "unit": "shares"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 4264406,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "shares"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 4239037,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2013",
          "unit": "shares"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 4159690,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2012",
          "unit": "shares"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 4104533,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2011",
          "unit": "shares"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 3616551,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2010",
          "unit": "shares"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 2793612,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "frame": "CY2009",
          "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": "2024-01-01",
          "end": "2024-12-31",
          "val": 2.16,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024",
          "unit": "USD/shares"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 4.49,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023",
          "unit": "USD/shares"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 4.07,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2022",
          "unit": "USD/shares"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 4.41,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2021",
          "unit": "USD/shares"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 2.15,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2020",
          "unit": "USD/shares"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 3.47,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2019",
          "unit": "USD/shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 3.4,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2018",
          "unit": "USD/shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 2.21,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2017",
          "unit": "USD/shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 1.93,
          "accn": "0000842518-19-000010",
          "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": 1.85,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2015",
          "unit": "USD/shares"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 1.96,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD/shares"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 1.88,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2013",
          "unit": "USD/shares"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 1.96,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2012",
          "unit": "USD/shares"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 1.49,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2011",
          "unit": "USD/shares"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 1.34,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2010",
          "unit": "USD/shares"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 0.25,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "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": "2024-01-01",
          "end": "2024-12-31",
          "val": 2.16,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024",
          "unit": "USD/shares"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 4.48,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023",
          "unit": "USD/shares"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 4.04,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2022",
          "unit": "USD/shares"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 4.37,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2021",
          "unit": "USD/shares"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 2.13,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2020",
          "unit": "USD/shares"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 3.42,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2019",
          "unit": "USD/shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 3.32,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2018",
          "unit": "USD/shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 2.16,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2017",
          "unit": "USD/shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 1.9,
          "accn": "0000842518-19-000010",
          "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": 1.82,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2015",
          "unit": "USD/shares"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 1.92,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD/shares"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 1.85,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2013",
          "unit": "USD/shares"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 1.95,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2012",
          "unit": "USD/shares"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 1.49,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2011",
          "unit": "USD/shares"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 1.34,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2010",
          "unit": "USD/shares"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 0.25,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "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": "2024-01-01",
          "end": "2024-12-31",
          "val": 2314000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 10206000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 7163000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 7883000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 1562000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 5228000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 2283000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 5209000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 1923000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 3767000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 704000,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 1731000,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 3747000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 2583000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 2238000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": -603000,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "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": "2024-12-31",
          "val": 14152000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 15397000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 16999000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 17789000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 19305000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 13754000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 10485000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 10564000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 11310000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 11051000,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 10224000,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 11163000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 11368000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 10477000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 10841000,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "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": "2024-01-01",
          "end": "2024-12-31",
          "val": 1283000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 980000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 1206000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 947000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 883000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 937000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 791000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 623000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 553000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 495000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2015",
          "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": 35642000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 6527000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 4795000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 9051000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 12685000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 9505000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 5731000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 4707000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 3824000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 3616000,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 4057000,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 5597000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 6727000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 6922000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 8107000,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "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": "2024-12-31",
          "val": 1768000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 1768000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 12702000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 12700000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 12713000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 10520000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 10500000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 8100000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 8100000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 8101000,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 8101000,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 8101000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 8101000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 8101000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 8101000,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "frame": "CY2010Q4I",
          "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": "2024-12-31",
          "val": 78000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 94000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 1227000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 1627000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 2238000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 2025000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 2472000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 452000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 305000,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 108000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 329000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 678000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2011Q4I",
          "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": "2024-01-01",
          "end": "2024-12-31",
          "val": 204000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 4140000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 342000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 80000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 210000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 1436000,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 250000,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 27000,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "CommonStockSharesOutstanding",
      "taxonomy": "us-gaap",
      "label": "Common shares outstanding",
      "kind": "instant",
      "unitKind": "shares",
      "meaning": "Common shares outstanding at the reporting date. This point-in-time count differs from the weighted-average shares used for earnings per share and can exclude other share classes.",
      "observations": [
        {
          "end": "2024-12-31",
          "val": 5567833,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024Q4I",
          "unit": "shares"
        },
        {
          "end": "2023-12-31",
          "val": 5499772,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023Q4I",
          "unit": "shares"
        },
        {
          "end": "2022-12-31",
          "val": 5437048,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2022Q4I",
          "unit": "shares"
        },
        {
          "end": "2021-12-31",
          "val": 5482756,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2021Q4I",
          "unit": "shares"
        },
        {
          "end": "2020-12-31",
          "val": 5411384,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2020Q4I",
          "unit": "shares"
        },
        {
          "end": "2019-12-31",
          "val": 4929283,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2019Q4I",
          "unit": "shares"
        },
        {
          "end": "2018-12-31",
          "val": 4852868,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2018Q4I",
          "unit": "shares"
        },
        {
          "end": "2017-12-31",
          "val": 4782505,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2017Q4I",
          "unit": "shares"
        },
        {
          "end": "2016-12-31",
          "val": 4300634,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2016Q4I",
          "unit": "shares"
        },
        {
          "end": "2015-12-31",
          "val": 4257179,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2015Q4I",
          "unit": "shares"
        },
        {
          "end": "2014-12-31",
          "val": 4203684,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2014Q4I",
          "unit": "shares"
        },
        {
          "end": "2013-12-31",
          "val": 4201362,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2013Q4I",
          "unit": "shares"
        },
        {
          "end": "2012-12-31",
          "val": 4171473,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2012Q4I",
          "unit": "shares"
        },
        {
          "end": "2011-12-31",
          "val": 4124892,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2011Q4I",
          "unit": "shares"
        },
        {
          "end": "2010-12-31",
          "val": 4081887,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "frame": "CY2010Q4I",
          "unit": "shares"
        }
      ]
    },
    {
      "tag": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents",
      "taxonomy": "us-gaap",
      "label": "Cash including restricted cash",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Cash, cash equivalents and restricted cash as reported in the cash flow reconciliation. Restricted amounts are not freely available, so this is not the same as unrestricted cash.",
      "observations": [
        {
          "end": "2024-12-31",
          "val": 42716000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 23467000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 23054000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 244785000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 97604000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 38857000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 39915000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2018Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "AccumulatedOtherComprehensiveIncomeLossNetOfTax",
      "taxonomy": "us-gaap",
      "label": "Accumulated other comprehensive income or loss",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Cumulative other comprehensive items after tax, such as translation and unrealized hedging or securities effects. These amounts have not passed through net income.",
      "observations": [
        {
          "end": "2024-12-31",
          "val": -43943000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": -42271000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": -49278000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": -5671000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": -719000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": -2583000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": -5353000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": -3417000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": -2424000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": -1810000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": -1508000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": -1263000,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 101000,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 346000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": -473000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest",
      "taxonomy": "us-gaap",
      "label": "Total equity including noncontrolling interests",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Equity including the portion attributable to noncontrolling interests. It is larger than or equal to parent stockholders equity and is not market capitalization.",
      "observations": [
        {
          "end": "2014-12-31",
          "val": 85788000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 80712000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 74828000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 68988000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 63064000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2010Q4I",
          "unit": "USD"
        },
        {
          "end": "2009-12-31",
          "val": 45959000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2009Q4I",
          "unit": "USD"
        },
        {
          "end": "2008-12-31",
          "val": 45919000,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "frame": "CY2008Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "OperatingLeaseRightOfUseAsset",
      "taxonomy": "us-gaap",
      "label": "Operating lease right-of-use asset",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Carrying amount of the right to use leased assets under operating leases. It reflects discounted remaining payments, not the value of the underlying property.",
      "observations": [
        {
          "end": "2024-12-31",
          "val": 3828000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 3781000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 4392000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 4826000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 5282000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 3720000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2019Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "OperatingLeaseLiability",
      "taxonomy": "us-gaap",
      "label": "Operating lease liability",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Present value of remaining operating lease payments. Discount-rate choices and lease terms affect the amount; it is not the sum of undiscounted future rent.",
      "observations": [
        {
          "end": "2024-12-31",
          "val": 4072000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 4063000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 4723000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 5210000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 5694000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 4154000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2019Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "LongTermDebt",
      "taxonomy": "us-gaap",
      "label": "Long-term debt",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Long-term borrowings under this concept, which can include the current portion depending on presentation. It is not total liabilities and may exclude leases and other obligations.",
      "observations": [
        {
          "end": "2012-12-31",
          "val": 9000000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 19000000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 22000000,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "PropertyPlantAndEquipmentGross",
      "taxonomy": "us-gaap",
      "label": "Gross property, plant and equipment",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Cost of property, plant and equipment before accumulated depreciation. Historical cost does not indicate current value or replacement cost.",
      "observations": [
        {
          "end": "2024-12-31",
          "val": 28278000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 27935000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 28595000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 28072000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 39268000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 34436000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 29901000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 28819000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 28322000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 26850000,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 25353000,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 25389000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 25624000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 23622000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2011Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment",
      "taxonomy": "us-gaap",
      "label": "Accumulated depreciation on property, plant and equipment",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Cumulative depreciation, depletion and amortization recorded against property, plant and equipment. It measures cost allocation to date, not physical wear or market value.",
      "observations": [
        {
          "end": "2024-12-31",
          "val": 14126000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 12538000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 11596000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 10283000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 19963000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 20682000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 19416000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 18255000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 17012000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 15799000,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 15129000,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 14226000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 14256000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 13145000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 12054000,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "IntangibleAssetsNetExcludingGoodwill",
      "taxonomy": "us-gaap",
      "label": "Net intangible assets excluding goodwill",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Intangible assets other than goodwill after amortization and impairment. Internally developed intangibles are usually not recognized, so this understates what a company relies on.",
      "observations": [
        {
          "end": "2024-12-31",
          "val": 78000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 94000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 1227000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 1627000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 2238000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 2025000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 108000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 329000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 678000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 1168000,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "OtherLiabilitiesNoncurrent",
      "taxonomy": "us-gaap",
      "label": "Other noncurrent liabilities",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Noncurrent liabilities the filer does not present separately. The composition differs by filer and is described only in the filing.",
      "observations": [
        {
          "end": "2020-12-31",
          "val": 141000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 138000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 193000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 293000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 300000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 858000,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 21000,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 1058000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 543000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 481000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2011Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest",
      "taxonomy": "us-gaap",
      "label": "Pre-tax income or loss from continuing operations",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Income or loss from continuing operations before income taxes and noncontrolling interests. It excludes discontinued operations and is not net income.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 14268000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 34730000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 29552000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 31926000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2021",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "ComprehensiveIncomeNetOfTax",
      "taxonomy": "us-gaap",
      "label": "Comprehensive income or loss",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Net income plus other comprehensive income after tax. It includes unrealized items that net income excludes and is not a cash measure.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 10282000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 31531000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": -21218000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 19091000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 13110000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 19784000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 14420000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 10117000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 7658000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 7541000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 7942000,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 6493000,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 7887000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 6931000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 4475000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "NetIncomeLossAvailableToCommonStockholdersBasic",
      "taxonomy": "us-gaap",
      "label": "Net income available to common stockholders",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Net income after preferred dividends and similar adjustments, the numerator for basic earnings per share. It can be lower than reported net income.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 11954000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 24524000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 22389000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 24043000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 11246000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 17014000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 16356000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 10479000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 8272000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 7843000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 8187000,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "Depreciation",
      "taxonomy": "us-gaap",
      "label": "Depreciation expense",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Depreciation recognized for the period under this concept. It is a noncash allocation of asset cost and may exclude amortization and depletion reported elsewhere.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 1500000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 1700000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 1700000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 1800000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 1600000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 1300000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 1200000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 1200000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 1200000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 1000000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 1100000,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 1100000,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 1100000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 1300000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 1200000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "AmortizationOfIntangibleAssets",
      "taxonomy": "us-gaap",
      "label": "Amortization of intangible assets",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Amortization recognized on finite-lived intangible assets. It follows acquisition accounting and does not indicate the intangibles are losing usefulness at that rate.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 17000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 367000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 400000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 537000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 533000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 448000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 280000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 113000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 108000,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 221000,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 349000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 490000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 900000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 930000,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "CurrentIncomeTaxExpenseBenefit",
      "taxonomy": "us-gaap",
      "label": "Current income tax expense or benefit",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Income tax expense or benefit for the period that is currently payable or refundable. It differs from cash taxes paid and from total tax expense.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 3280000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 11106000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 6912000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 6363000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 3414000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 5799000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 1788000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 2059000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 1994000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 2787000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 2164000,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 2103000,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 3208000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 2905000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 3590000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "DeferredIncomeTaxExpenseBenefit",
      "taxonomy": "us-gaap",
      "label": "Deferred income tax expense or benefit",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "The deferred portion of income tax expense or benefit, arising from timing differences. It is not tax paid in the period.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": -966000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": -900000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 251000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 1520000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -1852000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": -571000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 495000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 3150000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -71000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 980000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -1460000,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -372000,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 539000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -322000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -1352000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": -1357000,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "IncomeTaxesPaidNet",
      "taxonomy": "us-gaap",
      "label": "Income taxes paid, net",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Cash income taxes paid net of refunds during the period. It differs from income tax expense and can reflect prior years and estimated payments.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 8962000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 8681000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 3327000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 5790000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 2953000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 3102000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -3314000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 3029000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 1534000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "ProceedsFromIssuanceOfCommonStock",
      "taxonomy": "us-gaap",
      "label": "Proceeds from issuing common stock",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Cash received from issuing common stock during the period. It is gross of costs only where the filer reports it so, and it does not include noncash issuances.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 385000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 743000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 1051000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 890000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 717000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 1178000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 1025000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 14804000,
          "accn": "0000842518-20-000010",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-12",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 499000,
          "accn": "0000842518-19-000010",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-02-28",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 216000,
          "accn": "0000842518-18-000031",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-01",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 238000,
          "accn": "0000842518-17-000028",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 248000,
          "accn": "0000842518-16-000092",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-03",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 467000,
          "accn": "0000842518-15-000019",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-09",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 360000,
          "accn": "0000842518-14-000016",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-03",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 13800000,
          "accn": "0001562762-13-000070",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-04",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 454000,
          "accn": "0001193125-12-098751",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-06",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "OperatingLeasePayments",
      "taxonomy": "us-gaap",
      "label": "Operating lease payments",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Cash paid for operating lease liabilities during the period. It differs from lease expense recognized and excludes variable payments in some presentations.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 1000000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 1100000,
          "accn": "0000842518-25-000011",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K/A",
          "filed": "2025-03-27",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 1000000,
          "accn": "0000842518-24-000014",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-04",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 1100000,
          "accn": "0000842518-23-000016",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-03",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 1000000,
          "accn": "0000842518-22-000009",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-09",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 700000,
          "accn": "0000842518-21-000010",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-19",
          "frame": "CY2019",
          "unit": "USD"
        }
      ]
    }
  ],
  "source_snapshot": "/company-data/sources/a4e12a51af7fd0b8717d7895f18924af4baf3030718709f857979afc63111542.json.gz"
}
