{
  "schema": "canli.company-reference.v1",
  "cik": "0001137091",
  "name": "POWER SOLUTIONS INTERNATIONAL, INC.",
  "selection_policy": "extended-v22",
  "source_url": "https://data.sec.gov/api/xbrl/companyfacts/CIK0001137091.json",
  "source_sha256": "dd3b2f751cdb8496d2461a24758e7564b10eea2ac59b89b7f2c96b97371c91f3",
  "fetched_at": "2026-09-20T07:41:34.852Z",
  "policy": "Latest-filed annual-report facts per unit and reporting period at capture time. Duration facts cover 300 to 400 days. This selection can include restatements and is not a point-in-time backtest dataset. Missing concepts are omitted, never zero-filled. Values retain original units and are not currency converted. Extended concepts require compatible unit shapes and at least three reporting ends with changing values within one unit. Constant or incompatible added histories are omitted.",
  "claim_boundary": "Public company accounting reference, not market prices, returns, an investment recommendation, or ALPHAC performance. Validate a separately constructed return series with the validation API; accounting values are not returns.",
  "concepts": [
    {
      "tag": "Assets",
      "taxonomy": "us-gaap",
      "label": "Total assets",
      "kind": "instant",
      "meaning": "Resources recognized on the balance sheet. Book assets are not the market value of the business.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 424745000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 328182000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 284303000,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 319913000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 300538000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 283977000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 313672000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 289882000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-09-30",
          "val": 292691000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q3I",
          "unit": "USD"
        },
        {
          "end": "2018-06-30",
          "val": 274117000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q2I",
          "unit": "USD"
        },
        {
          "end": "2018-03-31",
          "val": 248573000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q1I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 247019000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-09-30",
          "val": 266507000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q3I",
          "unit": "USD"
        },
        {
          "end": "2017-06-30",
          "val": 251470000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q2I",
          "unit": "USD"
        },
        {
          "end": "2017-03-31",
          "val": 262990000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q1I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 264619000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-09-30",
          "val": 257362000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q3I",
          "unit": "USD"
        },
        {
          "end": "2016-06-30",
          "val": 262521000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q2I",
          "unit": "USD"
        },
        {
          "end": "2016-03-31",
          "val": 295015000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q1I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 353837000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 266945000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 126619000,
          "accn": "0001193125-15-091420",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 90765000,
          "accn": "0001193125-14-077913",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 71083000,
          "accn": "0001193125-13-101540",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-12",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 55353000,
          "accn": "0001193125-12-142607",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-30",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "Liabilities",
      "taxonomy": "us-gaap",
      "label": "Total liabilities",
      "kind": "instant",
      "meaning": "Recognized obligations at the reporting date. The definition and scope differ from interest-bearing debt.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 246136000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 262932000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 288220000,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 350285000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 342561000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 277880000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 285175000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 308460000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-09-30",
          "val": 301960000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q3I",
          "unit": "USD"
        },
        {
          "end": "2018-06-30",
          "val": 265192000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q2I",
          "unit": "USD"
        },
        {
          "end": "2018-03-31",
          "val": 228093000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q1I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 214847000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-09-30",
          "val": 228968000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q3I",
          "unit": "USD"
        },
        {
          "end": "2017-06-30",
          "val": 205453000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q2I",
          "unit": "USD"
        },
        {
          "end": "2017-03-31",
          "val": 208325000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q1I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 223959000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-09-30",
          "val": 210395000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q3I",
          "unit": "USD"
        },
        {
          "end": "2016-06-30",
          "val": 207184000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q2I",
          "unit": "USD"
        },
        {
          "end": "2016-03-31",
          "val": 213115000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q1I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 268964000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 180462000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 76198000,
          "accn": "0001193125-15-091420",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 68031000,
          "accn": "0001193125-14-077913",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 55759000,
          "accn": "0001193125-13-101540",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-12",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 49997000,
          "accn": "0001193125-12-142607",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-30",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "StockholdersEquity",
      "taxonomy": "us-gaap",
      "label": "Stockholders equity",
      "kind": "instant",
      "meaning": "The reported residual interest after liabilities. It is an accounting amount, not market capitalization.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 178609000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 65250000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": -3917000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": -30372000,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": -42023000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 6097000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 28497000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": -18578000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-09-30",
          "val": -9269000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "unit": "USD"
        },
        {
          "end": "2018-06-30",
          "val": 8925000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "unit": "USD"
        },
        {
          "end": "2018-03-31",
          "val": 20480000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 32172000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-09-30",
          "val": 6129000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q3I",
          "unit": "USD"
        },
        {
          "end": "2017-06-30",
          "val": 18210000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q2I",
          "unit": "USD"
        },
        {
          "end": "2017-03-31",
          "val": 30048000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q1I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 40660000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-09-30",
          "val": 46967000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q3I",
          "unit": "USD"
        },
        {
          "end": "2016-06-30",
          "val": 55337000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q2I",
          "unit": "USD"
        },
        {
          "end": "2016-03-31",
          "val": 81900000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q1I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 84873000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 86483000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 47607000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 22734000,
          "accn": "0001193125-16-482422",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 15324000,
          "accn": "0001193125-15-091420",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 5356000,
          "accn": "0001193125-12-142607",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-30",
          "frame": "CY2010Q4I",
          "unit": "USD"
        },
        {
          "end": "2009-12-31",
          "val": 3787000,
          "accn": "0001193125-13-101540",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-12",
          "frame": "CY2009Q4I",
          "unit": "USD"
        },
        {
          "end": "2008-12-31",
          "val": 1400000,
          "accn": "0001193125-12-142607",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-30",
          "frame": "CY2008Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "CashAndCashEquivalentsAtCarryingValue",
      "taxonomy": "us-gaap",
      "label": "Cash and cash equivalents",
      "kind": "instant",
      "meaning": "Cash and qualifying short-term liquid investments under the filer’s accounting policy. Restricted cash and longer-term investments may be reported separately.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 41250000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 55252000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 22758000,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 24296000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 6255000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 20968000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 3000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 54000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-09-30",
          "val": 2014000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q3I",
          "unit": "USD"
        },
        {
          "end": "2018-06-30",
          "val": 2000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q2I",
          "unit": "USD"
        },
        {
          "end": "2018-03-31",
          "val": 0,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q1I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 0,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-09-30",
          "val": 0,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q3I",
          "unit": "USD"
        },
        {
          "end": "2017-06-30",
          "val": 0,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q2I",
          "unit": "USD"
        },
        {
          "end": "2017-03-31",
          "val": 342000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q1I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 2292000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-09-30",
          "val": 1610000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q3I",
          "unit": "USD"
        },
        {
          "end": "2016-06-30",
          "val": 435000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q2I",
          "unit": "USD"
        },
        {
          "end": "2016-03-31",
          "val": 1495000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q1I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 8445000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 6561000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 6306000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2013Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "NetIncomeLoss",
      "taxonomy": "us-gaap",
      "label": "Net income or loss",
      "kind": "duration",
      "meaning": "Reported profit or loss for the period. Check the filing for attribution, exceptional items and discontinued operations before comparing companies.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": 113987000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 69279000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 26306000,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 11270000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -48472000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -22982000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 8248000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -54726000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -47612000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -47472000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -2891000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 21477000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -18760000,
          "accn": "0001193125-16-482422",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 6702000,
          "accn": "0001193125-15-091420",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 4061000,
          "accn": "0001193125-14-077913",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 1569000,
          "accn": "0001193125-13-101540",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-12",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 2387000,
          "accn": "0001193125-12-142607",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-30",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "NetCashProvidedByUsedInOperatingActivities",
      "taxonomy": "us-gaap",
      "label": "Operating cash flow",
      "kind": "duration",
      "meaning": "Cash generated or used by operating activities. Working-capital timing can make this differ substantially from reported income.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": 24113000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 62390000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 70512000,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": -8845000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -61478000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -7594000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 18157000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -6168000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -7695000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 32282000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -22815000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -15094000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -12435000,
          "accn": "0001193125-14-077913",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -2941000,
          "accn": "0001193125-14-077913",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -973000,
          "accn": "0001193125-14-077913",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 3924000,
          "accn": "0001193125-13-101540",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-12",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 3388000,
          "accn": "0001193125-12-142607",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-30",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "Revenues",
      "taxonomy": "us-gaap",
      "label": "Revenue",
      "kind": "duration",
      "meaning": "Revenue under this specific accounting concept. A missing value is not zero; filers can use other revenue concepts.",
      "observations": [
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 416616000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 339465000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 362387000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 347580000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "RevenueFromContractWithCustomerExcludingAssessedTax",
      "taxonomy": "us-gaap",
      "label": "Contract revenue excluding tax",
      "kind": "duration",
      "meaning": "Revenue from customer contracts excluding assessed taxes under this specific taxonomy concept. It is not automatically comparable to older revenue tags.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": 722405000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 475967000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 458973000,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 481333000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 456255000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 417639000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 546076000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 496038000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 416616000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 339465000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 362387000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 347580000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "NetCashProvidedByUsedInFinancingActivities",
      "taxonomy": "us-gaap",
      "label": "Financing cash flow",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Net cash from financing activities, including borrowing, repayments and transactions with owners. A positive amount does not establish operating profitability.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": -27694000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": -25934000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": -66798000,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 28367000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 46545000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 33270000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": -14550000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 16461000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 10568000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -36784000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 68504000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 67671000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 24712000,
          "accn": "0001193125-14-077913",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 7382000,
          "accn": "0001193125-14-077913",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 2543000,
          "accn": "0001193125-14-077913",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -3341000,
          "accn": "0001193125-13-101540",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-12",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": -3025000,
          "accn": "0001193125-12-142607",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-30",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "NetCashProvidedByUsedInInvestingActivities",
      "taxonomy": "us-gaap",
      "label": "Investing cash flow",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Net cash from investing activities, including asset purchases, disposals and investment transactions. This differs from capital expenditure payments alone.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": -9962000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": -4559000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": -5020000,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": -1354000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 398000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -1412000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": -3658000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -10239000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -5165000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -1651000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -43805000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -52322000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -6514000,
          "accn": "0001193125-14-077913",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -3898000,
          "accn": "0001193125-14-077913",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -1570000,
          "accn": "0001193125-14-077913",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -583000,
          "accn": "0001193125-13-101540",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-12",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": -363000,
          "accn": "0001193125-12-142607",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-30",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "RetainedEarningsAccumulatedDeficit",
      "taxonomy": "us-gaap",
      "label": "Retained earnings or deficit",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Accumulated undistributed earnings or deficit at the reporting date. This balance is not cash available for distribution.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 22476000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": -91511000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": -160790000,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": -187096000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": -198366000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": -149894000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": -126912000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": -135160000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-09-30",
          "val": -125262000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q3I",
          "unit": "USD"
        },
        {
          "end": "2018-06-30",
          "val": -106443000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q2I",
          "unit": "USD"
        },
        {
          "end": "2018-03-31",
          "val": -94638000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q1I",
          "unit": "USD"
        },
        {
          "end": "2018-01-01",
          "val": -80434000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": -82147000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-09-30",
          "val": -76018000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q3I",
          "unit": "USD"
        },
        {
          "end": "2017-06-30",
          "val": -66817000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q2I",
          "unit": "USD"
        },
        {
          "end": "2017-03-31",
          "val": -59070000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q1I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": -34535000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-09-30",
          "val": -27895000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q3I",
          "unit": "USD"
        },
        {
          "end": "2016-06-30",
          "val": -19180000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q2I",
          "unit": "USD"
        },
        {
          "end": "2016-03-31",
          "val": 9612000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q1I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 12937000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 15828000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": -2648000,
          "accn": "0001193125-15-091420",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 16112000,
          "accn": "0001193125-14-077913",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 9410000,
          "accn": "0001193125-13-101540",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-12",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 5349000,
          "accn": "0001193125-12-142607",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-30",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "WeightedAverageNumberOfSharesOutstandingBasic",
      "taxonomy": "us-gaap",
      "label": "Basic weighted-average shares",
      "kind": "duration",
      "unitKind": "shares",
      "meaning": "Time-weighted shares used for basic earnings per share. This denominator differs from shares outstanding at a single reporting date.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": 23022000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2025",
          "unit": "shares"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 22983000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2024",
          "unit": "shares"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 22960000,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "shares"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 22938000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022",
          "unit": "shares"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 22908000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021",
          "unit": "shares"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 22872000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020",
          "unit": "shares"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 21512000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019",
          "unit": "shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 18585000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018",
          "unit": "shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 13787000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017",
          "unit": "shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 10931000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016",
          "unit": "shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 10808000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015",
          "unit": "shares"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 10705000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014",
          "unit": "shares"
        }
      ]
    },
    {
      "tag": "WeightedAverageNumberOfDilutedSharesOutstanding",
      "taxonomy": "us-gaap",
      "label": "Diluted weighted-average shares",
      "kind": "duration",
      "unitKind": "shares",
      "meaning": "Weighted-average shares used for diluted earnings per share. Potential shares are included under the applicable dilution rules, not simply added to outstanding shares.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": 23066000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2025",
          "unit": "shares"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 23018000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2024",
          "unit": "shares"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 22973000,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "shares"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 22948000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022",
          "unit": "shares"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 22908000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021",
          "unit": "shares"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 22872000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020",
          "unit": "shares"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 21530000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019",
          "unit": "shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 18585000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018",
          "unit": "shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 13787000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017",
          "unit": "shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 10931000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016",
          "unit": "shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 10991000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015",
          "unit": "shares"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 11131000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014",
          "unit": "shares"
        }
      ]
    },
    {
      "tag": "EarningsPerShareBasic",
      "taxonomy": "us-gaap",
      "label": "Basic earnings per share",
      "kind": "duration",
      "unitKind": "per-share",
      "meaning": "Reported earnings or loss per basic common share or unit. Inspect attribution, share classes and restatements before comparing periods. This is not a market return.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": 4.95,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2025",
          "unit": "USD/shares"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 3.01,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2024",
          "unit": "USD/shares"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 1.15,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD/shares"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 0.49,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022",
          "unit": "USD/shares"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -2.12,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021",
          "unit": "USD/shares"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -1,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020",
          "unit": "USD/shares"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 0.38,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019",
          "unit": "USD/shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -2.94,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018",
          "unit": "USD/shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -6.2,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017",
          "unit": "USD/shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -4.34,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016",
          "unit": "USD/shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -0.27,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015",
          "unit": "USD/shares"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 2.01,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014",
          "unit": "USD/shares"
        }
      ]
    },
    {
      "tag": "EarningsPerShareDiluted",
      "taxonomy": "us-gaap",
      "label": "Diluted earnings per share",
      "kind": "duration",
      "unitKind": "per-share",
      "meaning": "Reported earnings or loss per share under dilution rules. Antidilutive instruments may be excluded. A diluted value can equal the basic value without implying no potential dilution.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": 4.94,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2025",
          "unit": "USD/shares"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 3.01,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2024",
          "unit": "USD/shares"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 1.15,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD/shares"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 0.49,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022",
          "unit": "USD/shares"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -2.12,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021",
          "unit": "USD/shares"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -1,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020",
          "unit": "USD/shares"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 0.38,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019",
          "unit": "USD/shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -2.94,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018",
          "unit": "USD/shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -6.2,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017",
          "unit": "USD/shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -4.47,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016",
          "unit": "USD/shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -1.11,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015",
          "unit": "USD/shares"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 1.38,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014",
          "unit": "USD/shares"
        }
      ]
    },
    {
      "tag": "IncomeTaxExpenseBenefit",
      "taxonomy": "us-gaap",
      "label": "Income tax expense or benefit",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Current and deferred income tax expense or benefit for continuing operations. This accounting expense differs from cash taxes paid.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": -10623000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 922000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 900000,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 304000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -406000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -3713000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 409000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 169000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 443000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 11613000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -9702000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 7744000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 4759000,
          "accn": "0001193125-16-482422",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 4143000,
          "accn": "0001193125-15-091420",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 2773000,
          "accn": "0001193125-14-077913",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 366000,
          "accn": "0001193125-13-101540",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-12",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 1387000,
          "accn": "0001193125-12-142607",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-30",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "PropertyPlantAndEquipmentNet",
      "taxonomy": "us-gaap",
      "label": "Net property, plant and equipment",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Carrying amount of property, plant and equipment after accumulated depreciation, depletion and amortization. It is not replacement cost or market value.",
      "observations": [
        {
          "end": "2019-12-31",
          "val": 23194000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 24266000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-09-30",
          "val": 24536000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q3I",
          "unit": "USD"
        },
        {
          "end": "2018-06-30",
          "val": 24931000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q2I",
          "unit": "USD"
        },
        {
          "end": "2018-03-31",
          "val": 18474000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q1I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 18960000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-09-30",
          "val": 18974000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q3I",
          "unit": "USD"
        },
        {
          "end": "2017-06-30",
          "val": 19050000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q2I",
          "unit": "USD"
        },
        {
          "end": "2017-03-31",
          "val": 19230000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q1I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 20127000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-09-30",
          "val": 20257000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q3I",
          "unit": "USD"
        },
        {
          "end": "2016-06-30",
          "val": 20386000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q2I",
          "unit": "USD"
        },
        {
          "end": "2016-03-31",
          "val": 20662000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q1I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 22809000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 17954000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 13104000,
          "accn": "0001193125-15-091420",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 7145000,
          "accn": "0001193125-14-077913",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 3611000,
          "accn": "0001193125-13-101540",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-12",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 2883000,
          "accn": "0001193125-12-142607",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-30",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "ShareBasedCompensation",
      "taxonomy": "us-gaap",
      "label": "Share-based compensation expense",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Reported noncash expense for share-based payment arrangements. Noncash treatment does not mean the awards have no economic cost to shareholders.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": 427000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 89000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 151000,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 385000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 394000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 607000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 1248000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 2663000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 473000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 1619000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 1501000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 1487000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "OperatingIncomeLoss",
      "taxonomy": "us-gaap",
      "label": "Operating income or loss",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Operating revenue less operating expenses for the reporting period. It excludes items outside the reported operating result and is not free cash flow.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": 109714000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 81644000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 44275000,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 24602000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -41570000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -21724000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 17203000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -36705000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -18046000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -25341000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -17417000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 24110000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 14967000,
          "accn": "0001193125-16-482422",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 12316000,
          "accn": "0001193125-15-091420",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 9805000,
          "accn": "0001193125-14-077913",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 4066000,
          "accn": "0001193125-13-101540",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-12",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 6077000,
          "accn": "0001193125-12-142607",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-30",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "AssetsCurrent",
      "taxonomy": "us-gaap",
      "label": "Current assets",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Assets classified as current under the normal operating cycle or one-year boundary. Not all current assets can be converted immediately into cash.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 290920000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 254335000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 205382000,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 255273000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 230228000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 202687000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 222522000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 216029000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-09-30",
          "val": 213968000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q3I",
          "unit": "USD"
        },
        {
          "end": "2018-06-30",
          "val": 193945000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q2I",
          "unit": "USD"
        },
        {
          "end": "2018-03-31",
          "val": 172132000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q1I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 170761000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-09-30",
          "val": 189262000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q3I",
          "unit": "USD"
        },
        {
          "end": "2017-06-30",
          "val": 174457000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q2I",
          "unit": "USD"
        },
        {
          "end": "2017-03-31",
          "val": 184053000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q1I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 183947000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-09-30",
          "val": 176990000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q3I",
          "unit": "USD"
        },
        {
          "end": "2016-06-30",
          "val": 180791000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q2I",
          "unit": "USD"
        },
        {
          "end": "2016-03-31",
          "val": 192253000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q1I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 249040000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 202469000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 110006000,
          "accn": "0001193125-15-091420",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 82077000,
          "accn": "0001193125-14-077913",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 66021000,
          "accn": "0001193125-13-101540",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-12",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 50165000,
          "accn": "0001193125-12-142607",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-30",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "InterestExpense",
      "taxonomy": "us-gaap",
      "label": "Interest expense",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Borrowing costs recognized as interest expense. This is distinct from cash interest paid and may not include every capitalized borrowing cost.",
      "observations": [
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 17069000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 13028000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 7307000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 5714000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 7871000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 7628000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 10841000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 11215000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 4320000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 1342000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 657000,
          "accn": "0001193125-16-482422",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 1023000,
          "accn": "0001193125-15-091420",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 1340000,
          "accn": "0001193125-14-077913",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 2131000,
          "accn": "0001193125-13-101540",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-12",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 2303000,
          "accn": "0001193125-12-142607",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-30",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "LiabilitiesCurrent",
      "taxonomy": "us-gaap",
      "label": "Current liabilities",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Obligations classified as current under the operating-cycle or one-year boundary. The balance includes more than short-term borrowing.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 92278000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 227567000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 248301000,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 319267000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 283311000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 239476000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 181587000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 220711000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-09-30",
          "val": 229951000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q3I",
          "unit": "USD"
        },
        {
          "end": "2018-06-30",
          "val": 194340000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q2I",
          "unit": "USD"
        },
        {
          "end": "2018-03-31",
          "val": 130580000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q1I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 122612000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-09-30",
          "val": 132842000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q3I",
          "unit": "USD"
        },
        {
          "end": "2017-06-30",
          "val": 111012000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q2I",
          "unit": "USD"
        },
        {
          "end": "2017-03-31",
          "val": 112893000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q1I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 99645000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-09-30",
          "val": 85626000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q3I",
          "unit": "USD"
        },
        {
          "end": "2016-06-30",
          "val": 83049000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q2I",
          "unit": "USD"
        },
        {
          "end": "2016-03-31",
          "val": 66570000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q1I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 105944000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 87562000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 32385000,
          "accn": "0001193125-15-091420",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 32664000,
          "accn": "0001193125-14-077913",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 51842000,
          "accn": "0001193125-13-101540",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-12",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 43899000,
          "accn": "0001193125-12-142607",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-30",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "AccountsPayableCurrent",
      "taxonomy": "us-gaap",
      "label": "Current accounts payable",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Current amounts owed to suppliers for goods and services received. This is one component of current liabilities, not all accrued obligations.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 48196000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 58208000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 67355000,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 76430000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 93256000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 31547000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 75835000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 85218000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-09-30",
          "val": 88798000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q3I",
          "unit": "USD"
        },
        {
          "end": "2018-06-30",
          "val": 64422000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q2I",
          "unit": "USD"
        },
        {
          "end": "2018-03-31",
          "val": 55221000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q1I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 51225000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-09-30",
          "val": 54195000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q3I",
          "unit": "USD"
        },
        {
          "end": "2017-06-30",
          "val": 55610000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q2I",
          "unit": "USD"
        },
        {
          "end": "2017-03-31",
          "val": 67167000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q1I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 53588000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-09-30",
          "val": 45764000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q3I",
          "unit": "USD"
        },
        {
          "end": "2016-06-30",
          "val": 49729000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q2I",
          "unit": "USD"
        },
        {
          "end": "2016-03-31",
          "val": 43160000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q1I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 79823000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 67713000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "Goodwill",
      "taxonomy": "us-gaap",
      "label": "Goodwill carrying amount",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Recognized goodwill remaining after accumulated impairment. It arises from business combinations and does not measure the current value of the company’s brand.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 29835000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 29835000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 29835000,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 29835000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 29835000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 29835000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 29835000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 29835000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-09-30",
          "val": 29835000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q3I",
          "unit": "USD"
        },
        {
          "end": "2018-06-30",
          "val": 29835000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q2I",
          "unit": "USD"
        },
        {
          "end": "2018-03-31",
          "val": 29835000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q1I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 29835000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-09-30",
          "val": 29835000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q3I",
          "unit": "USD"
        },
        {
          "end": "2017-06-30",
          "val": 29835000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q2I",
          "unit": "USD"
        },
        {
          "end": "2017-03-31",
          "val": 29835000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q1I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 29835000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-09-30",
          "val": 29835000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q3I",
          "unit": "USD"
        },
        {
          "end": "2016-06-30",
          "val": 29835000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q2I",
          "unit": "USD"
        },
        {
          "end": "2016-03-31",
          "val": 29835000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q1I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 29835000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 23414000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-04-01",
          "val": 23546000,
          "accn": "0001193125-16-482422",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2014Q1I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 0,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2013Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "FiniteLivedIntangibleAssetsNet",
      "taxonomy": "us-gaap",
      "label": "Net finite-lived intangible assets",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Finite-lived intangible assets after amortization. This excludes goodwill and should not be combined with indefinite-lived intangible assets without checking scope.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 1236000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 2454000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 3914000,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 5660000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 7784000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 10319000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 13372000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 17010000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 21491000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 26029000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 31745000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 21192000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "AccountsReceivableNetCurrent",
      "taxonomy": "us-gaap",
      "label": "Net current accounts receivable",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Current customer receivables after the allowance for credit loss. The balance is not cash collected or a guarantee of collection.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 90446000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 68958000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 66979000,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 89894000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 65110000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 60148000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 104515000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 86471000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-09-30",
          "val": 71639000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q3I",
          "unit": "USD"
        },
        {
          "end": "2018-06-30",
          "val": 70324000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q2I",
          "unit": "USD"
        },
        {
          "end": "2018-03-31",
          "val": 58870000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q1I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 68660000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-09-30",
          "val": 60811000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q3I",
          "unit": "USD"
        },
        {
          "end": "2017-06-30",
          "val": 56673000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q2I",
          "unit": "USD"
        },
        {
          "end": "2017-03-31",
          "val": 64305000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q1I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 60336000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-09-30",
          "val": 53364000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q3I",
          "unit": "USD"
        },
        {
          "end": "2016-06-30",
          "val": 57884000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q2I",
          "unit": "USD"
        },
        {
          "end": "2016-03-31",
          "val": 45384000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q1I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 70532000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 76266000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 42730000,
          "accn": "0001193125-15-091420",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 37480000,
          "accn": "0001193125-14-077913",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 29523000,
          "accn": "0001193125-13-101540",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-12",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 16282000,
          "accn": "0001193125-12-142607",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-30",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "OperatingExpenses",
      "taxonomy": "us-gaap",
      "label": "Operating expenses",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Recurring operating costs under this accounting concept, generally excluding production costs included in cost of sales. Check filing presentation before combining expense subtotals.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": 75185000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 58893000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 61589000,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 63961000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 82841000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 80172000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 82685000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 95474000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 69039000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 54530000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 68656000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 39930000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 29559000,
          "accn": "0001193125-16-482422",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 21601000,
          "accn": "0001193125-15-091420",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 16623000,
          "accn": "0001193125-14-077913",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 12561000,
          "accn": "0001193125-13-101540",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-12",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 10305000,
          "accn": "0001193125-12-142607",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-30",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "InventoryNet",
      "taxonomy": "us-gaap",
      "label": "Net inventory",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Inventory carrying amount after applicable valuation and LIFO reserves. It does not establish realizable selling proceeds or inventory turnover without other inputs.",
      "observations": [
        {
          "end": "2025-12-31",
          "val": 127363000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "unit": "USD"
        },
        {
          "end": "2024-12-31",
          "val": 93872000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 84947000,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 120560000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 142192000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 108213000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 108839000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 105614000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-09-30",
          "val": 112392000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q3I",
          "unit": "USD"
        },
        {
          "end": "2018-06-30",
          "val": 95957000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q2I",
          "unit": "USD"
        },
        {
          "end": "2018-03-31",
          "val": 91689000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2018Q1I",
          "unit": "USD"
        },
        {
          "end": "2018-01-01",
          "val": 81565000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 86724000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-09-30",
          "val": 113074000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q3I",
          "unit": "USD"
        },
        {
          "end": "2017-06-30",
          "val": 103335000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q2I",
          "unit": "USD"
        },
        {
          "end": "2017-03-31",
          "val": 97286000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017Q1I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 100548000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-09-30",
          "val": 111133000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q3I",
          "unit": "USD"
        },
        {
          "end": "2016-06-30",
          "val": 115062000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q2I",
          "unit": "USD"
        },
        {
          "end": "2016-03-31",
          "val": 139519000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016Q1I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 162095000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 106250000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 55986000,
          "accn": "0001193125-15-091420",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 39968000,
          "accn": "0001193125-14-077913",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 33393000,
          "accn": "0001193125-13-101540",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-12",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 32168000,
          "accn": "0001193125-12-142607",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-30",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "GrossProfit",
      "taxonomy": "us-gaap",
      "label": "Gross profit",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Revenue less the costs directly attributed to the goods or services sold. It precedes other operating expenses and is not net income.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": 184899000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 140537000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 105864000,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 88563000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 41271000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 58448000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 99888000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 58769000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 50993000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 29189000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 51239000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 64040000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 44526000,
          "accn": "0001193125-16-482422",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 33917000,
          "accn": "0001193125-15-091420",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 26428000,
          "accn": "0001193125-14-077913",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 16627000,
          "accn": "0001193125-13-101540",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-12",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 16382000,
          "accn": "0001193125-12-142607",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-30",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "ResearchAndDevelopmentExpense",
      "taxonomy": "us-gaap",
      "label": "Research and development expense",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Research and development costs recognized as expense. Capitalization policies and acquired projects can make this differ from total cash invested in development.",
      "observations": [
        {
          "start": "2025-01-01",
          "end": "2025-12-31",
          "val": 18164000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 20056000,
          "accn": "0001628280-26-013207",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-03-02",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 19457000,
          "accn": "0001137091-25-000005",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 18896000,
          "accn": "0001137091-24-000007",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-14",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 22435000,
          "accn": "0001137091-23-000004",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-04-14",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 25375000,
          "accn": "0001137091-22-000007",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-31",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 24932000,
          "accn": "0001137091-21-000002",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 28601000,
          "accn": "0001628280-20-006265",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-05-04",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 19944000,
          "accn": "0001628280-19-015322",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-12-27",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 18961000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 23574000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 19305000,
          "accn": "0001137091-19-000016",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-05-16",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 9400000,
          "accn": "0001193125-16-482422",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 6800000,
          "accn": "0001193125-15-091420",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 4000000,
          "accn": "0001193125-14-077913",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 3000000,
          "accn": "0001193125-13-101540",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-12",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    }
  ],
  "source_snapshot": "/company-data/sources/dd3b2f751cdb8496d2461a24758e7564b10eea2ac59b89b7f2c96b97371c91f3.json.gz"
}
