{
  "schema": "canli.company-reference.v1",
  "cik": "0000806517",
  "name": "PSYCHEMEDICS CORPORATION",
  "selection_policy": "extended-v23",
  "source_url": "https://data.sec.gov/api/xbrl/companyfacts/CIK0000806517.json",
  "source_sha256": "86f20b52a099e76620fe6881a053ed61515c47925a0b1b6a4ed64f7b833f6a17",
  "fetched_at": "2026-09-21T17:17:03.097Z",
  "policy": "Latest-filed annual-report facts per unit and reporting period at capture time. Duration facts cover 300 to 400 days. This selection can include restatements and is not a point-in-time backtest dataset. Missing concepts are omitted, never zero-filled. Values retain original units and are not currency converted. Extended concepts require compatible unit shapes and at least three reporting ends with changing values within one unit. Constant or incompatible added histories are omitted.",
  "claim_boundary": "Public company accounting reference, not market prices, returns, an investment recommendation, or ALPHAC performance. Validate a separately constructed return series with the validation API; accounting values are not returns.",
  "concepts": [
    {
      "tag": "Assets",
      "taxonomy": "us-gaap",
      "label": "Total assets",
      "kind": "instant",
      "meaning": "Resources recognized on the balance sheet. Book assets are not the market value of the business.",
      "observations": [
        {
          "end": "2024-12-31",
          "val": 8318000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 12326000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 18732000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 21552000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 24003000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 27531000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 24974000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 26508000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 25032000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 22036000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 24077709,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 16549816,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 14120618,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 13800852,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 11838478,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "Liabilities",
      "taxonomy": "us-gaap",
      "label": "Total liabilities",
      "kind": "instant",
      "meaning": "Recognized obligations at the reporting date. The definition and scope differ from interest-bearing debt.",
      "observations": [
        {
          "end": "2024-12-31",
          "val": 3188000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 5654000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 7961000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 9309000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 11491000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 10711000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 6227000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 7888000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 9425000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 10362000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 11241153,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 4272691,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 2897949,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 2766223,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 2090965,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "StockholdersEquity",
      "taxonomy": "us-gaap",
      "label": "Stockholders equity",
      "kind": "instant",
      "meaning": "The reported residual interest after liabilities. It is an accounting amount, not market capitalization.",
      "observations": [
        {
          "end": "2024-12-31",
          "val": 5130000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 6672000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 10771000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 12243000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 12512000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 16820000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 18747000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 18620000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 15607000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 11674000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 12836000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 12276000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 11222669,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 11034629,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 9747513,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2010Q4I",
          "unit": "USD"
        },
        {
          "end": "2009-12-31",
          "val": 9294384,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2009Q4I",
          "unit": "USD"
        },
        {
          "end": "2008-12-31",
          "val": 10559888,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "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": "2024-12-31",
          "val": 1417000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 1964000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 4750000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 1992000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 2833000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 7283000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 4069000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 8165000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 3938000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 2689000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 3612000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 3971000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 3065785,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 5564233,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 3720488,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2010Q4I",
          "unit": "USD"
        },
        {
          "end": "2009-12-31",
          "val": 4840367,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2009Q4I",
          "unit": "USD"
        },
        {
          "end": "2008-12-31",
          "val": 6630119,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2008Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "NetIncomeLoss",
      "taxonomy": "us-gaap",
      "label": "Net income or loss",
      "kind": "duration",
      "meaning": "Reported profit or loss for the period. Check the filing for attribution, exceptional items and discontinued operations before comparing companies.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": -1861000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": -4154000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": -1084000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -665000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -3859000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 1542000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 4584000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 6121000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 6678000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 1511000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 3206000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 3805210,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 2979629,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 3489283,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 2613720,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 1527295,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "NetCashProvidedByUsedInOperatingActivities",
      "taxonomy": "us-gaap",
      "label": "Operating cash flow",
      "kind": "duration",
      "meaning": "Cash generated or used by operating activities. Working-capital timing can make this differ substantially from reported income.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 929000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": -1480000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 4890000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 414000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -4083000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 4309000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 7929000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 9146000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 9269000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 4580000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 3086731,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 3935201,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 3295397,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 2399582,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "PaymentsToAcquirePropertyPlantAndEquipment",
      "taxonomy": "us-gaap",
      "label": "Capital expenditure payments",
      "kind": "duration",
      "meaning": "Cash payments to acquire property, plant and equipment. This taxonomy concept does not capture every form of investment or acquisition.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 51000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 157000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 187000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 182000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 991000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 1677000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 1191000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 1197000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 2012000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 1752000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 7564000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 1531632,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 2214048,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 1358790,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 817960,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 35427,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "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": 39701000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 38980000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 26975000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 29205000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "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": "2024-01-01",
          "end": "2024-12-31",
          "val": -1389000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": -1147000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": -1924000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -1035000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 501000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": -3002000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -5639000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -3456000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -5926000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -3705000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -3249756,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -2620244,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -2555563,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": -3132889,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "NetCashProvidedByUsedInInvestingActivities",
      "taxonomy": "us-gaap",
      "label": "Investing cash flow",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Net cash from investing activities, including asset purchases, disposals and investment transactions. This differs from capital expenditure payments alone.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": -87000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": -159000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": -208000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -220000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -858000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 2077000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -5359000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -1246000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -2094000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -1798000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -2335423,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 528788,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -1859713,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": -1056445,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "RetainedEarningsAccumulatedDeficit",
      "taxonomy": "us-gaap",
      "label": "Retained earnings or deficit",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Accumulated undistributed earnings or deficit at the reporting date. This balance is not cash available for distribution.",
      "observations": [
        {
          "end": "2024-12-31",
          "val": -18634000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": -16773000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": -11820000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": -9550000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": -8606000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": -3754000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": -1326000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": -2113000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": -4945000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": -8296000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": -6565894,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": -6559708,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": -7186009,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": -7009046,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": -7987468,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "WeightedAverageNumberOfSharesOutstandingBasic",
      "taxonomy": "us-gaap",
      "label": "Basic weighted-average shares",
      "kind": "duration",
      "unitKind": "shares",
      "meaning": "Time-weighted shares used for basic earnings per share. This denominator differs from shares outstanding at a single reporting date.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 5867000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "shares"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 5740000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "shares"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 5626000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022",
          "unit": "shares"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 5549000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "shares"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 5524000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "shares"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 5514000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 5502000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 5480000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 5447000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 5405000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "shares"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 5355000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "shares"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 5299060,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "shares"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 5260320,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2012",
          "unit": "shares"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 5229646,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "shares"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 5207244,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2010",
          "unit": "shares"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 5193329,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2009",
          "unit": "shares"
        }
      ]
    },
    {
      "tag": "WeightedAverageNumberOfDilutedSharesOutstanding",
      "taxonomy": "us-gaap",
      "label": "Diluted weighted-average shares",
      "kind": "duration",
      "unitKind": "shares",
      "meaning": "Weighted-average shares used for diluted earnings per share. Potential shares are included under the applicable dilution rules, not simply added to outstanding shares.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 5867000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "shares"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 5740000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "shares"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 5626000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022",
          "unit": "shares"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 5549000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "shares"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 5524000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "shares"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 5525000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 5547000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 5540000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 5475000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 5412000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "shares"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 5377000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "shares"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 5315463,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "shares"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 5272542,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2012",
          "unit": "shares"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 5235940,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "shares"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 5226454,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2010",
          "unit": "shares"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 5204767,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2009",
          "unit": "shares"
        }
      ]
    },
    {
      "tag": "EarningsPerShareBasic",
      "taxonomy": "us-gaap",
      "label": "Basic earnings per share",
      "kind": "duration",
      "unitKind": "per-share",
      "meaning": "Reported earnings or loss per basic common share or unit. Inspect attribution, share classes and restatements before comparing periods. This is not a market return.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": -0.32,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "USD/shares"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": -0.72,
          "accn": "0001171843-25-001658",
          "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": -0.19,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022",
          "unit": "USD/shares"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -0.12,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD/shares"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -0.7,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "USD/shares"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 0.28,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD/shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 0.83,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "USD/shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 1.12,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "USD/shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 1.23,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "USD/shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 0.28,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "USD/shares"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 0.6,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD/shares"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 0.72,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "USD/shares"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 0.57,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2012",
          "unit": "USD/shares"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 0.67,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD/shares"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 0.5,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2010",
          "unit": "USD/shares"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 0.29,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2009",
          "unit": "USD/shares"
        }
      ]
    },
    {
      "tag": "EarningsPerShareDiluted",
      "taxonomy": "us-gaap",
      "label": "Diluted earnings per share",
      "kind": "duration",
      "unitKind": "per-share",
      "meaning": "Reported earnings or loss per share under dilution rules. Antidilutive instruments may be excluded. A diluted value can equal the basic value without implying no potential dilution.",
      "observations": [
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": -0.19,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2022",
          "unit": "USD/shares"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -0.12,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD/shares"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -0.7,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "USD/shares"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 0.28,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD/shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 0.83,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "USD/shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 1.1,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "USD/shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 1.22,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "USD/shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 0.28,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "USD/shares"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 0.6,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD/shares"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 0.72,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "USD/shares"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 0.57,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2012",
          "unit": "USD/shares"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 0.67,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD/shares"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 0.5,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2010",
          "unit": "USD/shares"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 0.29,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2009",
          "unit": "USD/shares"
        }
      ]
    },
    {
      "tag": "IncomeTaxExpenseBenefit",
      "taxonomy": "us-gaap",
      "label": "Income tax expense or benefit",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Current and deferred income tax expense or benefit for continuing operations. This accounting expense differs from cash taxes paid.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": -55000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 716000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 44000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -156000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -2347000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 1514000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 3069000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 2056000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 3298000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -164000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 1427000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 1993428,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 1957948,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 2316513,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 1823834,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 1102317,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "PropertyPlantAndEquipmentNet",
      "taxonomy": "us-gaap",
      "label": "Net property, plant and equipment",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Carrying amount of property, plant and equipment after accumulated depreciation, depletion and amortization. It is not replacement cost or market value.",
      "observations": [
        {
          "end": "2024-12-31",
          "val": 2001000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 3061000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 4573000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 6691000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 9231000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 10862000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 10177000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 11811000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 13358000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 13133000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 12740131,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 6050203,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 4201409,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 2063377,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 1066870,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "ShareBasedCompensation",
      "taxonomy": "us-gaap",
      "label": "Share-based compensation expense",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Reported noncash expense for share-based payment arrangements. Noncash treatment does not mean the awards have no economic cost to shareholders.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 917000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 908000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 872000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 743000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 563000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 759000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 594000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 582000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 671000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 674000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 609000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 538304,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 458167,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 418077,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 394972,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 394498,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "OperatingIncomeLoss",
      "taxonomy": "us-gaap",
      "label": "Operating income or loss",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Operating revenue less operating expenses for the reporting period. It excludes items outside the reported operating result and is not free cash flow.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": -1893000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": -2921000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": -1083000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 209000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -6066000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 2998000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 7610000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 8157000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 10110000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 1471000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 4690000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 5706365,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 4935688,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 5800450,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 4414463,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 2584292,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "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": "2024-12-31",
          "val": 4938000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 6805000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 9964000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 10285000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 9598000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 12851000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 13870000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 13865000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 10854000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 8129000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 10576553,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 9956268,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 9573916,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 11500301,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 10657571,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "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": "2024-01-01",
          "end": "2024-12-31",
          "val": 26000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 17000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 32000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 49000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 75000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 59000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 106000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 72000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 134000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 128700,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 81877,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2014",
          "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": "2024-12-31",
          "val": 2711000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 4709000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 5718000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 5830000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 3941000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 5835000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 4060000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 4225000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 4495000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 3565000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 3596329,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 2958470,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 2083330,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 2283700,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 2018808,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "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": "2024-12-31",
          "val": 462000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 752000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 448000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 994000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 577000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 617000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 682000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 398000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 1363000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 747000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 845071,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 510550,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 669789,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 961844,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 699833,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2010Q4I",
          "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": "2024-12-31",
          "val": 2500000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 3687000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 3739000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 4116000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 3356000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 3780000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 4829000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 4488000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 5837000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 3539000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 4078133,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 4368864,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 4620768,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 4490976,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 3905821,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "PaymentsForRepurchaseOfCommonStock",
      "taxonomy": "us-gaap",
      "label": "Common-stock repurchase payments",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Cash paid to reacquire common stock during the period. This is not an authorization limit or a direct measure of the net change in share count.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 2563000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 0,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 0,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 0,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 22391,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 6034,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 79407,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2009",
          "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": "2024-01-01",
          "end": "2024-12-31",
          "val": 8994000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 11334000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 10374000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 10055000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 10952000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 13446000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 13008000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 11665000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 11340000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 11246000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 10448000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 9687669,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 9315960,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 8672173,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 7627170,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 7025686,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2009",
          "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": "2024-01-01",
          "end": "2024-12-31",
          "val": 7101000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 8413000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 9291000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 10264000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 4886000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 16444000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 20618000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 19822000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 21450000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 12717000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 15138000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 15394034,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 14251648,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 14472623,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 12041633,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 9609978,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "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": "2024-01-01",
          "end": "2024-12-31",
          "val": 749000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 1144000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 1326000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 1130000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 1280000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 1567000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 1551000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 1357000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 1415000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 1632000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 1348000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 825102,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 825518,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 607408,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 481433,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 467435,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "CommonStockSharesOutstanding",
      "taxonomy": "us-gaap",
      "label": "Common shares outstanding",
      "kind": "instant",
      "unitKind": "shares",
      "meaning": "Common shares outstanding at the reporting date. This point-in-time count differs from the weighted-average shares used for earnings per share and can exclude other share classes.",
      "observations": [
        {
          "end": "2024-12-31",
          "val": 6110000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024Q4I",
          "unit": "shares"
        },
        {
          "end": "2024-12-03",
          "val": 6107227,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "unit": "shares"
        },
        {
          "end": "2023-12-31",
          "val": 5806000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "shares"
        },
        {
          "end": "2022-12-31",
          "val": 5681000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022Q4I",
          "unit": "shares"
        },
        {
          "end": "2021-12-31",
          "val": 5589000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "shares"
        },
        {
          "end": "2020-12-31",
          "val": 5537000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2020Q4I",
          "unit": "shares"
        },
        {
          "end": "2019-12-31",
          "val": 5517000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2019Q4I",
          "unit": "shares"
        },
        {
          "end": "2018-12-31",
          "val": 5507000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2018Q4I",
          "unit": "shares"
        },
        {
          "end": "2017-12-31",
          "val": 5492000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017Q4I",
          "unit": "shares"
        },
        {
          "end": "2016-12-31",
          "val": 5460000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2016Q4I",
          "unit": "shares"
        },
        {
          "end": "2015-12-31",
          "val": 5423000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2015Q4I",
          "unit": "shares"
        },
        {
          "end": "2014-12-31",
          "val": 5375061,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2014Q4I",
          "unit": "shares"
        },
        {
          "end": "2013-12-31",
          "val": 5313766,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2013Q4I",
          "unit": "shares"
        },
        {
          "end": "2012-12-31",
          "val": 5272428,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012Q4I",
          "unit": "shares"
        },
        {
          "end": "2011-12-31",
          "val": 5235422,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2011Q4I",
          "unit": "shares"
        },
        {
          "end": "2010-12-31",
          "val": 5213013,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2010Q4I",
          "unit": "shares"
        }
      ]
    },
    {
      "tag": "AccumulatedOtherComprehensiveIncomeLossNetOfTax",
      "taxonomy": "us-gaap",
      "label": "Accumulated other comprehensive income or loss",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Cumulative other comprehensive items after tax, such as translation and unrealized hedging or securities effects. These amounts have not passed through net income.",
      "observations": [
        {
          "end": "2024-12-31",
          "val": -1634000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": -1634000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": -1634000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": -1634000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": -1634000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": -1624000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": -1399000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": -238000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "OperatingLeaseRightOfUseAsset",
      "taxonomy": "us-gaap",
      "label": "Operating lease right-of-use asset",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Carrying amount of the right to use leased assets under operating leases. It reflects discounted remaining payments, not the value of the underlying property.",
      "observations": [
        {
          "end": "2024-12-31",
          "val": 844000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 1828000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 2681000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 3552000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 4286000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 2875000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2019Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "OperatingLeaseLiability",
      "taxonomy": "us-gaap",
      "label": "Operating lease liability",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Present value of remaining operating lease payments. Discount-rate choices and lease terms affect the amount; it is not the sum of undiscounted future rent.",
      "observations": [
        {
          "end": "2024-12-31",
          "val": 876000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 1993000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 2975000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 3864000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 4770000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 3300000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2019Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "LongTermDebt",
      "taxonomy": "us-gaap",
      "label": "Long-term debt",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Long-term borrowings under this concept, which can include the current portion depending on presentation. It is not total liabilities and may exclude leases and other obligations.",
      "observations": [
        {
          "end": "2019-12-31",
          "val": 2629000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 1628000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 3377000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 3381000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 5891770,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2015Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "PropertyPlantAndEquipmentGross",
      "taxonomy": "us-gaap",
      "label": "Gross property, plant and equipment",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Cost of property, plant and equipment before accumulated depreciation. Historical cost does not indicate current value or replacement cost.",
      "observations": [
        {
          "end": "2024-12-31",
          "val": 24167000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 26694000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 26537000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 26350000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 26168000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 27059000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 23518000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 23481000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 22258000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 19774000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 18528682,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 11225925,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 8597014,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 13089655,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 11730866,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment",
      "taxonomy": "us-gaap",
      "label": "Accumulated depreciation on property, plant and equipment",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Cumulative depreciation, depletion and amortization recorded against property, plant and equipment. It measures cost allocation to date, not physical wear or market value.",
      "observations": [
        {
          "end": "2024-12-31",
          "val": 22166000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 23633000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 21964000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 19659000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 16937000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 16197000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 13341000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 11670000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 8900000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 6641000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 5788551,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 5175722,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 4395605,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 11026278,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 10663996,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "OtherAssetsNoncurrent",
      "taxonomy": "us-gaap",
      "label": "Other noncurrent assets",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Noncurrent assets the filer does not present separately. The composition differs by filer and is described only in the filing.",
      "observations": [
        {
          "end": "2024-12-31",
          "val": 455000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 632000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 823000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 864000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 888000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 943000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 927000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 832000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 820000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 774000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 761025,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 543345,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 345293,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 237174,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 114037,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "AccruedLiabilitiesCurrent",
      "taxonomy": "us-gaap",
      "label": "Accrued current liabilities",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Current obligations accrued for goods and services received but not yet invoiced or paid. This is one component of current liabilities, not all short-term obligations.",
      "observations": [
        {
          "end": "2024-12-31",
          "val": 1560000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 2604000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 3939000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 3188000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 1801000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 3577000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 2962000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 2870000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 1988000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 1198000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 1351333,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 2447920,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 1413541,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 1321856,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 1302370,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "PrepaidExpenseAndOtherAssetsCurrent",
      "taxonomy": "us-gaap",
      "label": "Prepaid expenses and other current assets",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Prepayments and other current assets grouped under this concept. The balance is not cash and its composition differs by filer.",
      "observations": [
        {
          "end": "2024-12-31",
          "val": 997000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 1136000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 1136000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 1499000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 914000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 1306000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 1067000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 1212000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 1079000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 1061000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 689995,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 769269,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 823274,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 565508,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 629036,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "DeferredTaxAssetsNet",
      "taxonomy": "us-gaap",
      "label": "Net deferred tax assets",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Deferred tax assets after the valuation allowance. Realization depends on future taxable income, so the balance is not a receivable from tax authorities.",
      "observations": [
        {
          "end": "2024-12-31",
          "val": 508000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024Q4I",
          "unit": "USD"
        },
        {
          "end": "2023-12-31",
          "val": 944000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023Q4I",
          "unit": "USD"
        },
        {
          "end": "2022-12-31",
          "val": 2184000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022Q4I",
          "unit": "USD"
        },
        {
          "end": "2021-12-31",
          "val": 2307000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021Q4I",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 2627000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2020Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "DeferredIncomeTaxLiabilitiesNet",
      "taxonomy": "us-gaap",
      "label": "Net deferred tax liabilities",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Deferred tax liabilities net of related assets under this concept. The amount reflects timing differences and is not tax currently due.",
      "observations": [
        {
          "end": "2021-12-31",
          "val": 0,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "unit": "USD"
        },
        {
          "end": "2020-12-31",
          "val": 211000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2020Q4I",
          "unit": "USD"
        },
        {
          "end": "2019-12-31",
          "val": 550000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 955000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2018Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest",
      "taxonomy": "us-gaap",
      "label": "Pre-tax income or loss from continuing operations",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Income or loss from continuing operations before income taxes and noncontrolling interests. It excludes discontinued operations and is not net income.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": -1916000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": -3438000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": -1040000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -821000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -6206000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 3056000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 7653000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 8177000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 9976000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 1347000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 4633000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 5798638,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 4937577,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 5805796,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 4437554,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 2629612,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "ComprehensiveIncomeNetOfTax",
      "taxonomy": "us-gaap",
      "label": "Comprehensive income or loss",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Net income plus other comprehensive income after tax. It includes unrealized items that net income excludes and is not a cash measure.",
      "observations": [
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": -1084000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -665000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -3869000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 1317000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 3423000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 5883000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 6678000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 1511000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "GeneralAndAdministrativeExpense",
      "taxonomy": "us-gaap",
      "label": "General and administrative expense",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "General and administrative costs reported under this concept, separate from selling expense. Filers group overhead differently, so compare presentation before comparing companies.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 5695000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 7192000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 5857000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 6126000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 6095000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 7221000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 6430000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 5642000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 4965000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 4561000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 4475000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 4157597,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 3946844,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 3948706,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 4195998,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 3596774,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "DepreciationDepletionAndAmortization",
      "taxonomy": "us-gaap",
      "label": "Depreciation, depletion and amortization",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Combined depreciation, depletion and amortization for the period. A noncash allocation of asset cost, not a measure of maintenance spending.",
      "observations": [
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 2914000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 3063000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 2807000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 2294000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 1731000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 1048000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 872171,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 586968,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 370020,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 284911,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 336795,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "OtherNonoperatingIncomeExpense",
      "taxonomy": "us-gaap",
      "label": "Other nonoperating income or expense",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Other income or expense outside operations under this concept. The composition is filer-specific and can include one-time items.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": -21000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": -10000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 43000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -61000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -140000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": -58000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 43000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 20000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -134000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -124000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -57000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 92273,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 1889,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2012",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "NonoperatingIncomeExpense",
      "taxonomy": "us-gaap",
      "label": "Nonoperating income or expense",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Total nonoperating income or expense, which can include interest, investment results and other items. A positive value is not operating profit.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": -23000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": -517000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 43000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -1030000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -140000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 58000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "CurrentIncomeTaxExpenseBenefit",
      "taxonomy": "us-gaap",
      "label": "Current income tax expense or benefit",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Income tax expense or benefit for the period that is currently payable or refundable. It differs from cash taxes paid and from total tax expense.",
      "observations": [
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 215000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -2008000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 1880000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 3358000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 3506000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 3130000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -269000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 28000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 1576744,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 1520228,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 1909660,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 1605680,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "DeferredIncomeTaxExpenseBenefit",
      "taxonomy": "us-gaap",
      "label": "Deferred income tax expense or benefit",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "The deferred portion of income tax expense or benefit, arising from timing differences. It is not tax paid in the period.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 0,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 692000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": -531000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -371000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -339000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": -366000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -289000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -1450000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 168000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 105000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 1399000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 416684,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 437720,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 406853,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 218154,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": 130434,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "InterestPaidNet",
      "taxonomy": "us-gaap",
      "label": "Interest paid, net",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Cash interest paid during the period, net of amounts capitalized where the filer reports it that way. It differs from interest expense recognized.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 23000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 18000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 33000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 50000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 75000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 59000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 108000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 70000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 134000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 128000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "ProceedsFromIssuanceOfCommonStock",
      "taxonomy": "us-gaap",
      "label": "Proceeds from issuing common stock",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Cash received from issuing common stock during the period. It is gross of costs only where the filer reports it so, and it does not include noncash issuances.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 1934000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 0,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": -74000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": -68000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -9000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": -33000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -93000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -86992,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -49261,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": -39381,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "OperatingLeasePayments",
      "taxonomy": "us-gaap",
      "label": "Operating lease payments",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Cash paid for operating lease liabilities during the period. It differs from lease expense recognized and excludes variable payments in some presentations.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": 965000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 1168000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": 1044000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 1151000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": 1038000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 1199000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 994000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "IncreaseDecreaseInAccountsReceivable",
      "taxonomy": "us-gaap",
      "label": "Change in accounts receivable",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "The cash flow adjustment for the change in receivables during the period. A positive value under this concept means receivables grew and reduced operating cash flow.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": -1187000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": -52000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": -377000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 760000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -424000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": -1049000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 355000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -1316000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 2298000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -539000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -291000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -251904,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 129792,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 585155,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 889737,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": -382371,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "IncreaseDecreaseInAccountsPayable",
      "taxonomy": "us-gaap",
      "label": "Change in accounts payable",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "The cash flow adjustment for the change in payables during the period. A positive value under this concept means payables grew and added to operating cash flow.",
      "observations": [
        {
          "start": "2024-01-01",
          "end": "2024-12-31",
          "val": -290000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-01-01",
          "end": "2023-12-31",
          "val": 304000,
          "accn": "0001171843-25-001658",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-03-24",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-01-01",
          "end": "2022-12-31",
          "val": -546000,
          "accn": "0001171843-24-001671",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-03-28",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-01-01",
          "end": "2021-12-31",
          "val": 417000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-01-01",
          "end": "2020-12-31",
          "val": -281000,
          "accn": "0001171843-23-001908",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-03-27",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": -494000,
          "accn": "0001171843-22-002192",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-03-30",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 77000,
          "accn": "0001171843-21-002107",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-03-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -990000,
          "accn": "0001171843-20-001248",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-02-25",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 144000,
          "accn": "0001171843-19-001481",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-04",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -98000,
          "accn": "0001171843-18-002060",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-16",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 335000,
          "accn": "0001144204-17-013217",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-07",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -159239,
          "accn": "0001144204-16-084605",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-02-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -292055,
          "accn": "0001144204-15-012568",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-02-27",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 262011,
          "accn": "0001144204-14-012603",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-02-28",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 519049,
          "accn": "0001144204-13-013811",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-08",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-01-01",
          "end": "2009-12-31",
          "val": -464110,
          "accn": "0001144204-12-013979",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-09",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    }
  ],
  "source_snapshot": "/company-data/sources/86f20b52a099e76620fe6881a053ed61515c47925a0b1b6a4ed64f7b833f6a17.json.gz"
}
