{
  "schema": "canli.company-reference.v1",
  "cik": "0001340652",
  "name": "ChemoCentryx, Inc.",
  "selection_policy": "extended-v23",
  "source_url": "https://data.sec.gov/api/xbrl/companyfacts/CIK0001340652.json",
  "source_sha256": "10cc63e9e10c71496c86f20b5b4616d8f0672bbc3356615999f217a544688eac",
  "fetched_at": "2026-09-22T19:44:27.938Z",
  "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": "2021-12-31",
          "val": 425652000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 518899000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 209083000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 183310000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 189328000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 155872000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 78155000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 116981000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 152422000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 122323000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 101551000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2011Q4I",
          "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": "2021-12-31",
          "val": 139532000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 133286000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 143083000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 168572000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 110061000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 105983000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 5648000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 8375000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 7114000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 11977000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 25554000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2011Q4I",
          "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": "2021-12-31",
          "val": 286120000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 385613000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 66000000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 14738000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 79267000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 49889000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 72507000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 108606000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 145308000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 110346000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 75997000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2011Q4I",
          "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": "2021-12-31",
          "val": 49978000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 32297000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 39179000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 28088000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 40020000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 12024000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 12823000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 16075000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 10258000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 8460000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 40155000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 12056000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2010Q4I",
          "unit": "USD"
        },
        {
          "end": "2009-12-31",
          "val": 21076000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2009Q4I",
          "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": -131755000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -55356000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": -55489000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -37966000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 17859000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -39963000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -47305000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -46929000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -38673000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -39891000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -4617000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -3096000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "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": "2021-01-01",
          "end": "2021-12-31",
          "val": -75621000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -81143000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": -70123000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 16436000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 4878000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 39145000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -33318000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -32227000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 3420000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 18637000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "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": "2021-01-01",
          "end": "2021-12-31",
          "val": 19020000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 15409000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 790000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 838000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 723000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 304000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 218000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 352000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 554000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 472000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 166000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 1193000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "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": "2020-01-01",
          "end": "2020-12-31",
          "val": 0,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 82497000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 11935000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2016",
          "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": "2021-01-01",
          "end": "2021-12-31",
          "val": 32224000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 64891000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 36128000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 42875000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 82497000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 11935000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2016",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "NetCashProvidedByUsedInFinancingActivities",
      "taxonomy": "us-gaap",
      "label": "Financing cash flow",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Net cash from financing activities, including borrowing, repayments and transactions with owners. A positive amount does not establish operating profitability.",
      "observations": [
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 1083000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 356621000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 94820000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 24700000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 7516000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 8820000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 66784000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 57436000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 11484000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 945000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "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": "2021-01-01",
          "end": "2021-12-31",
          "val": 92219000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -282360000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": -12526000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -53068000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 15602000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -48764000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -31668000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -56904000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 13195000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -28602000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "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": "2021-12-31",
          "val": -617097000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": -485342000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": -429986000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": -374497000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": -289200000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": -307059000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": -267096000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": -219791000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": -172862000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": -134189000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": -94298000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2011Q4I",
          "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": "2019-01-01",
          "end": "2019-12-31",
          "val": 56898000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2019",
          "unit": "shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 49814000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2018",
          "unit": "shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 48413000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2017",
          "unit": "shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 46432000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2016",
          "unit": "shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 43890,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2015",
          "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": "2019-01-01",
          "end": "2019-12-31",
          "val": 56898000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2019",
          "unit": "shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 49814000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2018",
          "unit": "shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 49615000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2017",
          "unit": "shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 46432000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2016",
          "unit": "shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 43890,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2015",
          "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": "2019-01-01",
          "end": "2019-12-31",
          "val": -0.98,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2019",
          "unit": "USD/shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -0.76,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2018",
          "unit": "USD/shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 0.37,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2017",
          "unit": "USD/shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -0.86,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2016",
          "unit": "USD/shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -1.08,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2015",
          "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": "2019-01-01",
          "end": "2019-12-31",
          "val": -0.98,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2019",
          "unit": "USD/shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -0.76,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2018",
          "unit": "USD/shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 0.36,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2017",
          "unit": "USD/shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -0.86,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2016",
          "unit": "USD/shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -1.08,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2015",
          "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": "2021-01-01",
          "end": "2021-12-31",
          "val": 0,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 0,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 0,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 0,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 0,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 0,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 0,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -73000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "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": "2021-12-31",
          "val": 32269000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 25160000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 2154000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 1536000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 1210000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 905000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 949000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 1208000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 1399000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 1421000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 1541000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2011Q4I",
          "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": "2021-01-01",
          "end": "2021-12-31",
          "val": 30692000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 22912000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 11638000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 10833000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 8748000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 8535000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 8985000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 8214000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 6242000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 4953000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 2642000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 2346000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "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": "2021-01-01",
          "end": "2021-12-31",
          "val": -129919000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -55177000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": -58303000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -40270000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 16493000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -40720000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -47689000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -47399000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -39115000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -39630000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -4301000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -5958000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "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": "2021-12-31",
          "val": 269177000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 441570000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 174362000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 181384000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 179830000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 148691000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 72035000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 74329000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 134302000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 104480000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 91319000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2011Q4I",
          "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": "2021-01-01",
          "end": "2021-12-31",
          "val": 2695000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 2643000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 2149000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 1224000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 4000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 24000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 59000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 794000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 734000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 81000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "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": "2021-12-31",
          "val": 63017000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 51558000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 59080000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 64396000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 32937000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 38335000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 5494000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 8190000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 6872000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 11300000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 9357000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2011Q4I",
          "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": "2021-12-31",
          "val": 6746000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 12875000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 1532000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 966000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 1400000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 671000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 675000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 748000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 909000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 750000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 536000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "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": "2019-12-31",
          "val": 176000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 2058000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 51090000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 30205000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2016Q4I",
          "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": "2021-01-01",
          "end": "2021-12-31",
          "val": 78851000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 42186000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 24155000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2019",
          "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": "2021-01-01",
          "end": "2021-12-31",
          "val": 82990000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 77882000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 70276000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 62736000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 49495000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 37945000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 33183000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 33815000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 33541000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 34569000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 28359000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 33527000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "CommonStockSharesOutstanding",
      "taxonomy": "us-gaap",
      "label": "Common shares outstanding",
      "kind": "instant",
      "unitKind": "shares",
      "meaning": "Common shares outstanding at the reporting date. This point-in-time count differs from the weighted-average shares used for earnings per share and can exclude other share classes.",
      "observations": [
        {
          "end": "2021-12-31",
          "val": 70357557,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "unit": "shares"
        },
        {
          "end": "2020-12-31",
          "val": 69452466,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020Q4I",
          "unit": "shares"
        },
        {
          "end": "2019-12-31",
          "val": 60234784,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2019Q4I",
          "unit": "shares"
        },
        {
          "end": "2018-12-31",
          "val": 50652238,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2018Q4I",
          "unit": "shares"
        },
        {
          "end": "2017-12-31",
          "val": 48837060,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2017Q4I",
          "unit": "shares"
        },
        {
          "end": "2016-12-31",
          "val": 48057920,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2016Q4I",
          "unit": "shares"
        },
        {
          "end": "2015-12-31",
          "val": 44185506,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2015Q4I",
          "unit": "shares"
        },
        {
          "end": "2014-12-31",
          "val": 43446096,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2014Q4I",
          "unit": "shares"
        },
        {
          "end": "2013-12-31",
          "val": 42888168,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "shares"
        },
        {
          "end": "2012-12-31",
          "val": 36354547,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "shares"
        },
        {
          "end": "2011-12-31",
          "val": 4385439,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2011Q4I",
          "unit": "shares"
        }
      ]
    },
    {
      "tag": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents",
      "taxonomy": "us-gaap",
      "label": "Cash including restricted cash",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Cash, cash equivalents and restricted cash as reported in the cash flow reconciliation. Restricted amounts are not freely available, so this is not the same as unrestricted cash.",
      "observations": [
        {
          "end": "2021-12-31",
          "val": 51058000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 33377000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 40259000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 28088000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 40020000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 12024000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 12823000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2015Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "AdditionalPaidInCapital",
      "taxonomy": "us-gaap",
      "label": "Additional paid-in capital",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Capital contributed above par value under this concept. It records historical contributions, not the current value of the equity or cash on hand.",
      "observations": [
        {
          "end": "2014-12-31",
          "val": 328440000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 318103000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 244513000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 170289000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2011Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "AccumulatedOtherComprehensiveIncomeLossNetOfTax",
      "taxonomy": "us-gaap",
      "label": "Accumulated other comprehensive income or loss",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Cumulative other comprehensive items after tax, such as translation and unrealized hedging or securities effects. These amounts have not passed through net income.",
      "observations": [
        {
          "end": "2021-12-31",
          "val": -483000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 114000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 318000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": -198000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": -119000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": -50000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": -40000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": -70000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 40000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 2000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": -31000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2011Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest",
      "taxonomy": "us-gaap",
      "label": "Total equity including noncontrolling interests",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Equity including the portion attributable to noncontrolling interests. It is larger than or equal to parent stockholders equity and is not market capitalization.",
      "observations": [
        {
          "end": "2013-12-31",
          "val": 145308000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 110346000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 75997000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 76773000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2010Q4I",
          "unit": "USD"
        },
        {
          "end": "2009-12-31",
          "val": 77302000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2009Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "OperatingLeaseRightOfUseAsset",
      "taxonomy": "us-gaap",
      "label": "Operating lease right-of-use asset",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Carrying amount of the right to use leased assets under operating leases. It reflects discounted remaining payments, not the value of the underlying property.",
      "observations": [
        {
          "end": "2021-12-31",
          "val": 24806000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 26911000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 1704000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-01-01",
          "val": 1301000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 0,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2018Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "OperatingLeaseLiability",
      "taxonomy": "us-gaap",
      "label": "Operating lease liability",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Present value of remaining operating lease payments. Discount-rate choices and lease terms affect the amount; it is not the sum of undiscounted future rent.",
      "observations": [
        {
          "end": "2021-12-31",
          "val": 49640000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 39516000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 2069000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 387000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2018Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "LongTermDebt",
      "taxonomy": "us-gaap",
      "label": "Long-term debt",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Long-term borrowings under this concept, which can include the current portion depending on presentation. It is not total liabilities and may exclude leases and other obligations.",
      "observations": [
        {
          "end": "2021-12-31",
          "val": 23635000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 24401000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 19786000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 330000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 901000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "PropertyPlantAndEquipmentGross",
      "taxonomy": "us-gaap",
      "label": "Gross property, plant and equipment",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Cost of property, plant and equipment before accumulated depreciation. Historical cost does not indicate current value or replacement cost.",
      "observations": [
        {
          "end": "2021-12-31",
          "val": 40989000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 32043000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 10771000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 9656000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 9029000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 8855000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 8560000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 8532000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 8265000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 7724000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 7339000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2011Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment",
      "taxonomy": "us-gaap",
      "label": "Accumulated depreciation on property, plant and equipment",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Cumulative depreciation, depletion and amortization recorded against property, plant and equipment. It measures cost allocation to date, not physical wear or market value.",
      "observations": [
        {
          "end": "2021-12-31",
          "val": 8720000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 6883000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 8617000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 8120000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 7819000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 7950000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 7611000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 7324000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 6866000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 6303000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 5798000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2011Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "OtherAssetsNoncurrent",
      "taxonomy": "us-gaap",
      "label": "Other noncurrent assets",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Noncurrent assets the filer does not present separately. The composition differs by filer and is described only in the filing.",
      "observations": [
        {
          "end": "2021-12-31",
          "val": 1544000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 1458000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 1409000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 390000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 359000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 279000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 160000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 181000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 160000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 160000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 2095000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2011Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "OtherLiabilitiesNoncurrent",
      "taxonomy": "us-gaap",
      "label": "Other noncurrent liabilities",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Noncurrent liabilities the filer does not present separately. The composition differs by filer and is described only in the filing.",
      "observations": [
        {
          "end": "2021-12-31",
          "val": 198000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 958000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 556000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-01-01",
          "val": 733000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 387000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 251000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 101000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 154000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 185000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 226000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 298000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 243000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2011Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "AccruedLiabilitiesCurrent",
      "taxonomy": "us-gaap",
      "label": "Accrued current liabilities",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Current obligations accrued for goods and services received but not yet invoiced or paid. This is one component of current liabilities, not all short-term obligations.",
      "observations": [
        {
          "end": "2021-12-31",
          "val": 26358000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 19794000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 19806000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-01-01",
          "val": 13924000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 12969000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 8575000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 8645000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 4819000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 7442000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 5649000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 6267000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 4692000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2011Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "PrepaidExpenseAndOtherAssetsCurrent",
      "taxonomy": "us-gaap",
      "label": "Prepaid expenses and other current assets",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Prepayments and other current assets grouped under this concept. The balance is not cash and its composition differs by filer.",
      "observations": [
        {
          "end": "2021-12-31",
          "val": 3380000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 4831000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 1400000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 2342000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 1449000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 722000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 757000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 972000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 596000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 630000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 1322000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2011Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "DeferredTaxAssetsNet",
      "taxonomy": "us-gaap",
      "label": "Net deferred tax assets",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Deferred tax assets after the valuation allowance. Realization depends on future taxable income, so the balance is not a receivable from tax authorities.",
      "observations": [
        {
          "end": "2021-12-31",
          "val": 9278000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 7546000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 358000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 8000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2018Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "DeferredIncomeTaxLiabilitiesNet",
      "taxonomy": "us-gaap",
      "label": "Net deferred tax liabilities",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Deferred tax liabilities net of related assets under this concept. The amount reflects timing differences and is not tax currently due.",
      "observations": [
        {
          "end": "2021-12-31",
          "val": 9278000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 7546000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 358000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 8000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2018Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest",
      "taxonomy": "us-gaap",
      "label": "Pre-tax income or loss from continuing operations",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Income or loss from continuing operations before income taxes and noncontrolling interests. It excludes discontinued operations and is not net income.",
      "observations": [
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -39891000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -4617000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -3169000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "ProfitLoss",
      "taxonomy": "us-gaap",
      "label": "Profit or loss including noncontrolling interests",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Net income or loss including the portion attributable to noncontrolling interests. It can differ from the net income attributable to the parent that per-share figures use.",
      "observations": [
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -131755000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -55356000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": -55489000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -37966000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 17859000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -39963000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2016",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "ComprehensiveIncomeNetOfTax",
      "taxonomy": "us-gaap",
      "label": "Comprehensive income or loss",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Net income plus other comprehensive income after tax. It includes unrealized items that net income excludes and is not a cash measure.",
      "observations": [
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -132352000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -55560000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": -54973000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -38045000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 17790000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -39973000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -47275000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -47039000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -38635000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -39858000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -4731000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -2992000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "GeneralAndAdministrativeExpense",
      "taxonomy": "us-gaap",
      "label": "General and administrative expense",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "General and administrative costs reported under this concept, separate from selling expense. Filers group overhead differently, so compare presentation before comparing companies.",
      "observations": [
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 42186000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 24155000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 20409000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 16509000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 14710000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 14506000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 13584000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 11634000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 10480000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 7615000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 7292000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "Depreciation",
      "taxonomy": "us-gaap",
      "label": "Depreciation expense",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Depreciation recognized for the period under this concept. It is a noncash allocation of asset cost and may exclude amortization and depletion reported elsewhere.",
      "observations": [
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 3139000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 797000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 550000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 512000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 418000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 348000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 477000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 543000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 576000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 592000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 754000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 660000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "NonoperatingIncomeExpense",
      "taxonomy": "us-gaap",
      "label": "Nonoperating income or expense",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Total nonoperating income or expense, which can include interest, investment results and other items. A positive value is not operating profit.",
      "observations": [
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -1836000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -179000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 2814000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 2304000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 1366000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 757000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 384000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 470000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 442000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -261000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -316000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "CurrentIncomeTaxExpenseBenefit",
      "taxonomy": "us-gaap",
      "label": "Current income tax expense or benefit",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Income tax expense or benefit for the period that is currently payable or refundable. It differs from cash taxes paid and from total tax expense.",
      "observations": [
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 0,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 0,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 0,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 0,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 0,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 0,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 0,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -73000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "InterestPaidNet",
      "taxonomy": "us-gaap",
      "label": "Interest paid, net",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Cash interest paid during the period, net of amounts capitalized where the filer reports it that way. It differs from interest expense recognized.",
      "observations": [
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 2027000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 1947000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 1735000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 748000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 0,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2017",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "ProceedsFromIssuanceOfCommonStock",
      "taxonomy": "us-gaap",
      "label": "Proceeds from issuing common stock",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Cash received from issuing common stock during the period. It is gross of costs only where the filer reports it so, and it does not include noncash issuances.",
      "observations": [
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 0,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 325654000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 73276000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 0,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 0,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 7000000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 64365000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 57017000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "OperatingLeasePayments",
      "taxonomy": "us-gaap",
      "label": "Operating lease payments",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Cash paid for operating lease liabilities during the period. It differs from lease expense recognized and excludes variable payments in some presentations.",
      "observations": [
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 5200000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 1700000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 1300000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2019",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "IncreaseDecreaseInAccountsReceivable",
      "taxonomy": "us-gaap",
      "label": "Change in accounts receivable",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "The cash flow adjustment for the change in receivables during the period. A positive value under this concept means receivables grew and reduced operating cash flow.",
      "observations": [
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 20885000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 30205000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -393000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2014",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "IncreaseDecreaseInInventories",
      "taxonomy": "us-gaap",
      "label": "Change in inventories",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "The cash flow adjustment for the change in inventories during the period. A positive value under this concept means inventory grew and reduced operating cash flow.",
      "observations": [
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 851000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 0,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 0,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2019",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "IncreaseDecreaseInAccountsPayable",
      "taxonomy": "us-gaap",
      "label": "Change in accounts payable",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "The cash flow adjustment for the change in payables during the period. A positive value under this concept means payables grew and added to operating cash flow.",
      "observations": [
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 2610000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 2982000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 188000,
          "accn": "0000950170-22-002561",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-01",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -434000,
          "accn": "0001564590-21-009883",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 729000,
          "accn": "0001564590-20-009787",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-10",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -4000,
          "accn": "0001193125-19-070954",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-11",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -73000,
          "accn": "0001193125-18-079260",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-12",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -161000,
          "accn": "0001193125-17-082093",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 159000,
          "accn": "0001193125-16-503608",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-14",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 214000,
          "accn": "0001193125-15-090602",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -405000,
          "accn": "0001193125-14-099600",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -103000,
          "accn": "0001193125-13-107109",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-14",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    }
  ],
  "source_snapshot": "/company-data/sources/10cc63e9e10c71496c86f20b5b4616d8f0672bbc3356615999f217a544688eac.json.gz"
}
