{
  "schema": "canli.company-reference.v1",
  "cik": "0001320854",
  "name": "FREIGHTCAR AMERICA, INC.",
  "selection_policy": "extended-v22",
  "source_url": "https://data.sec.gov/api/xbrl/companyfacts/CIK0001320854.json",
  "source_sha256": "ec6c8640a3c10de5c7ca80b3d160b4ea859e06a8575dcea5ed83b35b3eb0c2da",
  "fetched_at": "2026-09-20T07:52:12.269Z",
  "policy": "Latest-filed annual-report facts per unit and reporting period at capture time. Duration facts cover 300 to 400 days. This selection can include restatements and is not a point-in-time backtest dataset. Missing concepts are omitted, never zero-filled. Values retain original units and are not currency converted. Extended concepts require compatible unit shapes and at least three reporting ends with changing values within one unit. Constant or incompatible added histories are omitted.",
  "claim_boundary": "Public company accounting reference, not market prices, returns, an investment recommendation, or ALPHAC performance. Validate a separately constructed return series with the validation API; accounting values are not returns.",
  "concepts": [
    {
      "tag": "Assets",
      "taxonomy": "us-gaap",
      "label": "Total assets",
      "kind": "instant",
      "meaning": "Resources recognized on the balance sheet. Book assets are not the market value of the business.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 290049000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 224216000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 259459000,
          "accn": "0000950170-25-037977",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-12",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 199738000,
          "accn": "0000950170-24-032849",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-18",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 200664000,
          "accn": "0000950170-23-010051",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 182742000,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 245202000,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 289737000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 295904000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 339255000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 406904000,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 385252000,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 417719000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 388565000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 345463000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 310643000,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "Liabilities",
      "taxonomy": "us-gaap",
      "label": "Total liabilities",
      "kind": "instant",
      "meaning": "Recognized obligations at the reporting date. The definition and scope differ from interest-bearing debt.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 397462000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 374489000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 222207000,
          "accn": "0000950170-25-037977",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-12",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 228322000,
          "accn": "0000950170-24-032849",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-18",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 202320000,
          "accn": "0000950170-23-010051",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 152245000,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 128048000,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 96127000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 64172000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 82341000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 171793000,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 186557000,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 215184000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 177234000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 148129000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 118063000,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "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": "2020-12-31",
          "val": 30497000,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 117209000,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 193610000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 231732000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 256914000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 235111000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 198695000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 202535000,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 211331000,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 197334000,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 192584000,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "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": "2017-12-31",
          "val": 87788000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 92750000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 83068000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 113532000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 145506000,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 98509000,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 101870000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 61780000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2010Q4I",
          "unit": "USD"
        },
        {
          "end": "2009-12-31",
          "val": 98015000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2009Q4I",
          "unit": "USD"
        },
        {
          "end": "2008-12-31",
          "val": 129192000,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "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": "2021-01-01",
          "end": "2021-12-31",
          "val": -41447000,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -84443000,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": -75183000,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -40581000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -22562000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 12324000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 31805000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 5904000,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -19295000,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 19095000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 4935000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -12771000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 4940000,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "NetCashProvidedByUsedInOperatingActivities",
      "taxonomy": "us-gaap",
      "label": "Operating cash flow",
      "kind": "duration",
      "meaning": "Cash generated or used by operating activities. Working-capital timing can make this differ substantially from reported income.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": 34776000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 44933000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 4769000,
          "accn": "0000950170-25-037977",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-12",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 11503000,
          "accn": "0000950170-24-032849",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-18",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -55397000,
          "accn": "0000950170-23-010051",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -58905000,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": -18979000,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -31644000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 40341000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 215000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -65685000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -6026000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 32243000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 53002000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 29969000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -42071000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 22864000,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "PaymentsToAcquirePropertyPlantAndEquipment",
      "taxonomy": "us-gaap",
      "label": "Capital expenditure payments",
      "kind": "duration",
      "meaning": "Cash payments to acquire property, plant and equipment. This taxonomy concept does not capture every form of investment or acquisition.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": 3376000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 5019000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 12722000,
          "accn": "0000950170-25-037977",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-12",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 7816000,
          "accn": "0000950170-24-032849",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-18",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 2290000,
          "accn": "0000950170-23-010051",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 9849000,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 5573000,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 2185000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 967000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 13846000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 16699000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 11802000,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 17317000,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 9088000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 1830000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 1431000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 4317000,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "Revenues",
      "taxonomy": "us-gaap",
      "label": "Revenue",
      "kind": "duration",
      "meaning": "Revenue under this specific accounting concept. A missing value is not zero; filers can use other revenue concepts.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": 500991000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 559425000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 358093000,
          "accn": "0000950170-25-037977",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-12",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 364754000,
          "accn": "0000950170-24-032849",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-18",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 203050000,
          "accn": "0000950170-23-010051",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 108447000,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 229958000,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 316519000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 409474000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 523731000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 772854000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 598518000,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 290393000,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 677449000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 486986000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 142889000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 248462000,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "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": "2025-01-01",
          "end": "2025-12-31",
          "val": 500676000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 557699000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 356822000,
          "accn": "0000950170-25-037977",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-12",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 361497000,
          "accn": "0000950170-24-032849",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-18",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 199807000,
          "accn": "0000950170-23-010051",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 104052000,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 223506000,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 310633000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 407176000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "NetCashProvidedByUsedInFinancingActivities",
      "taxonomy": "us-gaap",
      "label": "Financing cash flow",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Net cash from financing activities, including borrowing, repayments and transactions with owners. A positive amount does not establish operating profitability.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": -5791000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": -36024000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 2245000,
          "accn": "0000950170-25-037977",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-12",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 7985000,
          "accn": "0000950170-24-032849",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-18",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 29265000,
          "accn": "0000950170-23-010051",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 52787000,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 9212000,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -128000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -3374000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -4616000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -511000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -22742000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 15373000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -2938000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -72000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -1072000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": -2757000,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "NetCashProvidedByUsedInInvestingActivities",
      "taxonomy": "us-gaap",
      "label": "Investing cash flow",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Net cash from investing activities, including asset purchases, disposals and investment transactions. This differs from capital expenditure payments alone.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": -9140000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": -5019000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": -4366000,
          "accn": "0000950170-25-037977",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-12",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": -7816000,
          "accn": "0000950170-24-032849",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-18",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -1675000,
          "accn": "0000950170-23-010051",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -6092000,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 30954000,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -10946000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -45289000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 14083000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 35732000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -3206000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -619000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -53425000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 10193000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 6908000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": -51284000,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "RetainedEarningsAccumulatedDeficit",
      "taxonomy": "us-gaap",
      "label": "Retained earnings or deficit",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Accumulated undistributed earnings or deficit at the reporting date. This balance is not cash available for distribution.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": -182515000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": -220619000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": -142848000,
          "accn": "0000950170-25-037977",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-12",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": -118913000,
          "accn": "0000950170-24-032849",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-18",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": -80066000,
          "accn": "0000950170-23-010051",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": -38619000,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 45824000,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 120799000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 161380000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 187508000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 179639000,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 152253000,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 149245000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 171429000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 155209000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 150274000,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "WeightedAverageNumberOfSharesOutstandingBasic",
      "taxonomy": "us-gaap",
      "label": "Basic weighted-average shares",
      "kind": "duration",
      "unitKind": "shares",
      "meaning": "Time-weighted shares used for basic earnings per share. This denominator differs from shares outstanding at a single reporting date.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": 31806004,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2025",
          "unit": "shares"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 30726916,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2024",
          "unit": "shares"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 28366457,
          "accn": "0000950170-25-037977",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-12",
          "frame": "CY2023",
          "unit": "shares"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 24838399,
          "accn": "0000950170-24-032849",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-18",
          "frame": "CY2022",
          "unit": "shares"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 20766398,
          "accn": "0000950170-23-010051",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "shares"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 13432428,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020",
          "unit": "shares"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 12352142,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019",
          "unit": "shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 12318861,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018",
          "unit": "shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 12285566,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017",
          "unit": "shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 12262275,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016",
          "unit": "shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 12175955,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2015",
          "unit": "shares"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 12001587,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2014",
          "unit": "shares"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 11954238,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2013",
          "unit": "shares"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 11932926,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "shares"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 11916292,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "shares"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 11896148,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2010",
          "unit": "shares"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 11861366,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "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": "2025-01-01",
          "end": "2025-12-31",
          "val": 33788463,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2025",
          "unit": "shares"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 30726916,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2024",
          "unit": "shares"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 28366457,
          "accn": "0000950170-25-037977",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-12",
          "frame": "CY2023",
          "unit": "shares"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 24838399,
          "accn": "0000950170-24-032849",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-18",
          "frame": "CY2022",
          "unit": "shares"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 20766398,
          "accn": "0000950170-23-010051",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "shares"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 13432428,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020",
          "unit": "shares"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 12352142,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019",
          "unit": "shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 12318861,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018",
          "unit": "shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 12285566,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017",
          "unit": "shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 12262275,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016",
          "unit": "shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 12217755,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2015",
          "unit": "shares"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 12103520,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2014",
          "unit": "shares"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 11954238,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2013",
          "unit": "shares"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 11969367,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "shares"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 11962196,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "shares"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 11896148,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2010",
          "unit": "shares"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 11870350,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "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": "2025-01-01",
          "end": "2025-12-31",
          "val": 1.16,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2025",
          "unit": "USD/shares"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": -3.12,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2024",
          "unit": "USD/shares"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": -1.18,
          "accn": "0000950170-25-037977",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-12",
          "frame": "CY2023",
          "unit": "USD/shares"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": -1.56,
          "accn": "0000950170-24-032849",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-18",
          "frame": "CY2022",
          "unit": "USD/shares"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -2,
          "accn": "0000950170-23-010051",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD/shares"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -6.29,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020",
          "unit": "USD/shares"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": -5.95,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019",
          "unit": "USD/shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -3.26,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018",
          "unit": "USD/shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -1.82,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017",
          "unit": "USD/shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 1,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016",
          "unit": "USD/shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 2.59,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2015",
          "unit": "USD/shares"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 0.49,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2014",
          "unit": "USD/shares"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -1.61,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2013",
          "unit": "USD/shares"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 1.6,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD/shares"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 0.41,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD/shares"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -1.07,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2010",
          "unit": "USD/shares"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 0.42,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2009",
          "unit": "USD/shares"
        }
      ]
    },
    {
      "tag": "EarningsPerShareDiluted",
      "taxonomy": "us-gaap",
      "label": "Diluted earnings per share",
      "kind": "duration",
      "unitKind": "per-share",
      "meaning": "Reported earnings or loss per share under dilution rules. Antidilutive instruments may be excluded. A diluted value can equal the basic value without implying no potential dilution.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": 1.09,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2025",
          "unit": "USD/shares"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": -3.12,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2024",
          "unit": "USD/shares"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": -1.18,
          "accn": "0000950170-25-037977",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-12",
          "frame": "CY2023",
          "unit": "USD/shares"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": -1.56,
          "accn": "0000950170-24-032849",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-18",
          "frame": "CY2022",
          "unit": "USD/shares"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -2,
          "accn": "0000950170-23-010051",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD/shares"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -6.29,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020",
          "unit": "USD/shares"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": -5.95,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019",
          "unit": "USD/shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -3.26,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018",
          "unit": "USD/shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -1.82,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017",
          "unit": "USD/shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 1,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016",
          "unit": "USD/shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 2.58,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2015",
          "unit": "USD/shares"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 0.49,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2014",
          "unit": "USD/shares"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -1.61,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2013",
          "unit": "USD/shares"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 1.6,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD/shares"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 0.41,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD/shares"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -1.07,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2010",
          "unit": "USD/shares"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 0.42,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2009",
          "unit": "USD/shares"
        }
      ]
    },
    {
      "tag": "IncomeTaxExpenseBenefit",
      "taxonomy": "us-gaap",
      "label": "Income tax expense or benefit",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Current and deferred income tax expense or benefit for continuing operations. This accounting expense differs from cash taxes paid.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": -48976000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 5838000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 1501000,
          "accn": "0000950170-25-037977",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-12",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 2312000,
          "accn": "0000950170-24-032849",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-18",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 1413000,
          "accn": "0000950170-23-010051",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 199000,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": -115000,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 10169000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -8845000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 3464000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 14831000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 2568000,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -5537000,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 13771000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 354000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -9511000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 248000,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "PropertyPlantAndEquipmentNet",
      "taxonomy": "us-gaap",
      "label": "Net property, plant and equipment",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Carrying amount of property, plant and equipment after accumulated depreciation, depletion and amortization. It is not replacement cost or market value.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 30969000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 30107000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 31258000,
          "accn": "0000950170-25-037977",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-12",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 23248000,
          "accn": "0000950170-24-032849",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-18",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 18236000,
          "accn": "0000950170-23-010051",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 19642000,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 38564000,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 45317000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 38253000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 46347000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 42596000,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 43239000,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 39396000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 39343000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 35984000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 40503000,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "ShareBasedCompensation",
      "taxonomy": "us-gaap",
      "label": "Share-based compensation expense",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Reported noncash expense for share-based payment arrangements. Noncash treatment does not mean the awards have no economic cost to shareholders.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": 3630000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 3110000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 1240000,
          "accn": "0000950170-25-037977",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-12",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 2106000,
          "accn": "0000950170-24-032849",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-18",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 2977000,
          "accn": "0000950170-23-010051",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 1034000,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 1225000,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 3198000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 1162000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 1149000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 2183000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 2084000,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 2289000,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 1703000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 2189000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 1675000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 1829000,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "OperatingIncomeLoss",
      "taxonomy": "us-gaap",
      "label": "Operating income or loss",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Operating revenue less operating expenses for the reporting period. It excludes items outside the reported operating result and is not free cash flow.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": 33920000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 37341000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 10492000,
          "accn": "0000950170-25-037977",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-12",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": -15024000,
          "accn": "0000950170-24-032849",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-18",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -22762000,
          "accn": "0000950170-23-010051",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -80593000,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": -75602000,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -32105000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -31783000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 15848000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 46763000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 9507000,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -24087000,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 33239000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 5513000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -21497000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 5701000,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "AssetsCurrent",
      "taxonomy": "us-gaap",
      "label": "Current assets",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Assets classified as current under the normal operating cycle or one-year boundary. Not all current assets can be converted immediately into cash.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 160005000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 145031000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 180421000,
          "accn": "0000950170-25-037977",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-12",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 128888000,
          "accn": "0000950170-24-032849",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-18",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 136726000,
          "accn": "0000950170-23-010051",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 120978000,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 109679000,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 155833000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 199947000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 241170000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 280681000,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 273165000,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 297388000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 261225000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 200287000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 150476000,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010Q4I",
          "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": "2019-01-01",
          "end": "2019-12-31",
          "val": 609000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 155000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 163000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 171000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 243000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 1077000,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 809000,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 384000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 226000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -965000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "LiabilitiesCurrent",
      "taxonomy": "us-gaap",
      "label": "Current liabilities",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Obligations classified as current under the operating-cycle or one-year boundary. The balance includes more than short-term borrowing.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 85597000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 80825000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 137361000,
          "accn": "0000950170-25-037977",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-12",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 105985000,
          "accn": "0000950170-24-032849",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-18",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 69320000,
          "accn": "0000950170-23-010051",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 71149000,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 49430000,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 62050000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 40317000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 54135000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 72557000,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 98325000,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 147228000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 96576000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 69698000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 38681000,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "AccountsPayableCurrent",
      "taxonomy": "us-gaap",
      "label": "Current accounts payable",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Current amounts owed to suppliers for goods and services received. This is one component of current liabilities, not all accrued obligations.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 55671000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 49574000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 84417000,
          "accn": "0000950170-25-037977",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-12",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 48449000,
          "accn": "0000950170-24-032849",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-18",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 41185000,
          "accn": "0000950170-23-010051",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 17840000,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 11713000,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 34749000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 23329000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 34536000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 34304000,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 34010000,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 16016000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 33453000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 28110000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 12882000,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010Q4I",
          "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": "2018-12-31",
          "val": 21521000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 21521000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 21521000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 21521000,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 22128000,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 22128000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 22128000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 22128000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 22052000,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "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": "2016-12-31",
          "val": 0,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 359000,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 1653000,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 2372000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 3218000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 3957000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "AccountsReceivableNetCurrent",
      "taxonomy": "us-gaap",
      "label": "Net current accounts receivable",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Current customer receivables after the allowance for credit loss. The balance is not cash collected or a guarantee of collection.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 12443000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 12506000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 6408000,
          "accn": "0000950170-25-037977",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-12",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 9571000,
          "accn": "0000950170-24-032849",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-18",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 9571000,
          "accn": "0000950170-23-010051",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 9421000,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 6991000,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 18218000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 7581000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 25207000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 39708000,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 4086000,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 4034000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 12987000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 10125000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 4106000,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "InventoryNet",
      "taxonomy": "us-gaap",
      "label": "Net inventory",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Inventory carrying amount after applicable valuation and LIFO reserves. It does not establish realizable selling proceeds or inventory turnover without other inputs.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 68295000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 75281000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 125022000,
          "accn": "0000950170-25-037977",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-12",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 64317000,
          "accn": "0000950170-24-032849",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-18",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 56012000,
          "accn": "0000950170-23-010051",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 38831000,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 25092000,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 64562000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 45292000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 97904000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 115354000,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 82259000,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 66340000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 73842000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 72877000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 57713000,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "GrossProfit",
      "taxonomy": "us-gaap",
      "label": "Gross profit",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Revenue less the costs directly attributed to the goods or services sold. It precedes other operating expenses and is not net income.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": 73193000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 67042000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 41763000,
          "accn": "0000950170-25-037977",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-12",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 25823000,
          "accn": "0000950170-24-032849",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-18",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 11458000,
          "accn": "0000950170-23-010051",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -13502000,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": -14300000,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -3627000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 2996000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 40179000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 82661000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 42343000,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 13225000,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 64986000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 31946000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 2722000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 36522000,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "CostOfRevenue",
      "taxonomy": "us-gaap",
      "label": "Cost of revenue",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Costs attributed to goods produced and sold and services provided during the period. This is not the sum of every operating expense.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": 427798000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 492383000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 316330000,
          "accn": "0000950170-25-037977",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-12",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 338931000,
          "accn": "0000950170-24-032849",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-18",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 191592000,
          "accn": "0000950170-23-010051",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 121949000,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 244258000,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 320146000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 406478000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 483552000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 690193000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 556175000,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 277168000,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 612463000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 455040000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 140167000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 211940000,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "SellingGeneralAndAdministrativeExpense",
      "taxonomy": "us-gaap",
      "label": "Selling, general and administrative expense",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Selling and general administrative costs reported under this concept. It is an expense category, not a substitute for total operating expenses.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": 39273000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 32915000,
          "accn": "0001193125-26-098668",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-09",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 27489000,
          "accn": "0000950170-25-037977",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-12",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 28227000,
          "accn": "0000950170-24-032849",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-18",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 27532000,
          "accn": "0000950170-23-010051",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 29815000,
          "accn": "0000950170-22-004254",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-22",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 38302000,
          "accn": "0001562762-21-000129",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-24",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 29051000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 32987000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 36376000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 41663000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 35317000,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 27464000,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 32736000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 28660000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 24618000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 31316000,
          "accn": "0001193125-12-139911",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "ResearchAndDevelopmentExpense",
      "taxonomy": "us-gaap",
      "label": "Research and development expense",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Research and development costs recognized as expense. Capitalization policies and acquired projects can make this differ from total cash invested in development.",
      "observations": [
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 955000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 42000,
          "accn": "0001193125-20-061709",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 298000,
          "accn": "0001193125-19-062501",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 386000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 379000,
          "accn": "0001193125-18-077273",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-09",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 332000,
          "accn": "0001193125-17-069639",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-03",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 382000,
          "accn": "0001193125-16-493293",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-04",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 393000,
          "accn": "0001193125-15-091243",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 1957000,
          "accn": "0001193125-14-100078",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 849000,
          "accn": "0001193125-13-109977",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    }
  ],
  "source_snapshot": "/company-data/sources/ec6c8640a3c10de5c7ca80b3d160b4ea859e06a8575dcea5ed83b35b3eb0c2da.json.gz"
}
