{
  "schema": "canli.company-reference.v1",
  "cik": "0001526952",
  "name": "Wellesley Bancorp, Inc.",
  "selection_policy": "extended-v23",
  "source_url": "https://data.sec.gov/api/xbrl/companyfacts/CIK0001526952.json",
  "source_sha256": "4b51ef3cc5b829a587340ba65c2ac19d351cf4429cbb55c29a620b17f22f0bd6",
  "fetched_at": "2026-09-23T02:58:26.771Z",
  "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": "2019-12-31",
          "val": 945218000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 871420000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 805395000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 695283000,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 621182000,
          "accn": "0001144204-17-016524",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-24",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 535115000,
          "accn": "0001144204-16-090338",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-25",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 458520000,
          "accn": "0001157523-15-001025",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-26",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 376048000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 303148000,
          "accn": "0001157523-13-001572",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 262002000,
          "accn": "0001157523-12-001541",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-26",
          "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": "2019-12-31",
          "val": 871767000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 806290000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 746150000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 640069000,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 569004000,
          "accn": "0001144204-17-016524",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-24",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 485769000,
          "accn": "0001144204-16-090338",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-25",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 411731000,
          "accn": "0001157523-15-001025",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-26",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 331077000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 280417000,
          "accn": "0001157523-13-001572",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 241594000,
          "accn": "0001157523-12-001541",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-26",
          "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": "2019-12-31",
          "val": 73451000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 65130000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 59245000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 55214000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 52178000,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 49346000,
          "accn": "0001144204-17-016524",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-24",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 46789000,
          "accn": "0001144204-16-090338",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-25",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 44971000,
          "accn": "0001157523-15-001025",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-26",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 22731000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 20408000,
          "accn": "0001157523-13-001572",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2010Q4I",
          "unit": "USD"
        },
        {
          "end": "2009-12-31",
          "val": 18303000,
          "accn": "0001157523-12-001541",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-26",
          "frame": "CY2009Q4I",
          "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": "2018-12-31",
          "val": 42650000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 28462000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 28425000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 28178000,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 19271000,
          "accn": "0001144204-17-016524",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-24",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 19067000,
          "accn": "0001144204-16-090338",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-25",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 18218000,
          "accn": "0001157523-15-001025",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-26",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 33524000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 18397000,
          "accn": "0001157523-13-001572",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2010Q4I",
          "unit": "USD"
        },
        {
          "end": "2009-12-31",
          "val": 9370000,
          "accn": "0001157523-12-001541",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-26",
          "frame": "CY2009Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "NetIncomeLoss",
      "taxonomy": "us-gaap",
      "label": "Net income or loss",
      "kind": "duration",
      "meaning": "Reported profit or loss for the period. Check the filing for attribution, exceptional items and discontinued operations before comparing companies.",
      "observations": [
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 6000000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 5991000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 3185000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 2936000,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 2649000,
          "accn": "0001144204-17-016524",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-24",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 1777000,
          "accn": "0001144204-16-090338",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-25",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 2220000,
          "accn": "0001157523-15-001025",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 1099000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 2005000,
          "accn": "0001157523-13-001572",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 2153000,
          "accn": "0001157523-12-001541",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-26",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "NetCashProvidedByUsedInOperatingActivities",
      "taxonomy": "us-gaap",
      "label": "Operating cash flow",
      "kind": "duration",
      "meaning": "Cash generated or used by operating activities. Working-capital timing can make this differ substantially from reported income.",
      "observations": [
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 3930000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 6853000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 8054000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 3310000,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 11714000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -5317000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 2125000,
          "accn": "0001157523-13-001572",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 3848000,
          "accn": "0001157523-12-001541",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-26",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "PaymentsToAcquirePropertyPlantAndEquipment",
      "taxonomy": "us-gaap",
      "label": "Capital expenditure payments",
      "kind": "duration",
      "meaning": "Cash payments to acquire property, plant and equipment. This taxonomy concept does not capture every form of investment or acquisition.",
      "observations": [
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 629000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 1241000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 344000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 1159000,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 377000,
          "accn": "0001144204-17-016524",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-24",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 585000,
          "accn": "0001144204-16-090338",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-25",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 2112000,
          "accn": "0001157523-15-001025",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 1188000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 594000,
          "accn": "0001157523-13-001572",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 243000,
          "accn": "0001157523-12-001541",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-26",
          "frame": "CY2010",
          "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": "2019-01-01",
          "end": "2019-12-31",
          "val": 55699000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 59231000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 104452000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 70166000,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 80000000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 69196000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 38731000,
          "accn": "0001157523-13-001572",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 14049000,
          "accn": "0001157523-12-001541",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-26",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "NetCashProvidedByUsedInInvestingActivities",
      "taxonomy": "us-gaap",
      "label": "Investing cash flow",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Net cash from investing activities, including asset purchases, disposals and investment transactions. This differs from capital expenditure payments alone.",
      "observations": [
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": -60185000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -51896000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -112469000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -73229000,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -90865000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -79185000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -25729000,
          "accn": "0001157523-13-001572",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -8870000,
          "accn": "0001157523-12-001541",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-26",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "RetainedEarningsAccumulatedDeficit",
      "taxonomy": "us-gaap",
      "label": "Retained earnings or deficit",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Accumulated undistributed earnings or deficit at the reporting date. This balance is not cash available for distribution.",
      "observations": [
        {
          "end": "2019-12-31",
          "val": 45625000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 40203000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 34736000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 31999000,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 29411000,
          "accn": "0001144204-17-016524",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-24",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 27027000,
          "accn": "0001144204-16-090338",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-25",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 25423000,
          "accn": "0001157523-15-001025",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-26",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 23203000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 22104000,
          "accn": "0001157523-13-001572",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 20099000,
          "accn": "0001157523-12-001541",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-26",
          "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": "2019-01-01",
          "end": "2019-12-31",
          "val": 2461527,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2019",
          "unit": "shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 2404371,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018",
          "unit": "shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 2369466,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017",
          "unit": "shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 2329645,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016",
          "unit": "shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 2311364,
          "accn": "0001144204-17-016524",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-24",
          "frame": "CY2015",
          "unit": "shares"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 2293339,
          "accn": "0001144204-16-090338",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-25",
          "frame": "CY2014",
          "unit": "shares"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 2289247,
          "accn": "0001157523-15-001025",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-26",
          "frame": "CY2013",
          "unit": "shares"
        }
      ]
    },
    {
      "tag": "WeightedAverageNumberOfDilutedSharesOutstanding",
      "taxonomy": "us-gaap",
      "label": "Diluted weighted-average shares",
      "kind": "duration",
      "unitKind": "shares",
      "meaning": "Weighted-average shares used for diluted earnings per share. Potential shares are included under the applicable dilution rules, not simply added to outstanding shares.",
      "observations": [
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 2553805,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2019",
          "unit": "shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 2502784,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018",
          "unit": "shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 2454580,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017",
          "unit": "shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 2367038,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016",
          "unit": "shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 2328936,
          "accn": "0001144204-17-016524",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-24",
          "frame": "CY2015",
          "unit": "shares"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 2299388,
          "accn": "0001144204-16-090338",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-25",
          "frame": "CY2014",
          "unit": "shares"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 2289247,
          "accn": "0001157523-15-001025",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-26",
          "frame": "CY2013",
          "unit": "shares"
        }
      ]
    },
    {
      "tag": "EarningsPerShareBasic",
      "taxonomy": "us-gaap",
      "label": "Basic earnings per share",
      "kind": "duration",
      "unitKind": "per-share",
      "meaning": "Reported earnings or loss per basic common share or unit. Inspect attribution, share classes and restatements before comparing periods. This is not a market return.",
      "observations": [
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 2.44,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2019",
          "unit": "USD/shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 2.49,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018",
          "unit": "USD/shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 1.34,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017",
          "unit": "USD/shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 1.26,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016",
          "unit": "USD/shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 1.14,
          "accn": "0001144204-17-016524",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-24",
          "frame": "CY2015",
          "unit": "USD/shares"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 0.78,
          "accn": "0001144204-16-090338",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-25",
          "frame": "CY2014",
          "unit": "USD/shares"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 0.97,
          "accn": "0001157523-15-001025",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-26",
          "frame": "CY2013",
          "unit": "USD/shares"
        }
      ]
    },
    {
      "tag": "EarningsPerShareDiluted",
      "taxonomy": "us-gaap",
      "label": "Diluted earnings per share",
      "kind": "duration",
      "unitKind": "per-share",
      "meaning": "Reported earnings or loss per share under dilution rules. Antidilutive instruments may be excluded. A diluted value can equal the basic value without implying no potential dilution.",
      "observations": [
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 2.36,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2019",
          "unit": "USD/shares"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 2.4,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018",
          "unit": "USD/shares"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 1.3,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017",
          "unit": "USD/shares"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 1.24,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016",
          "unit": "USD/shares"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 1.14,
          "accn": "0001144204-17-016524",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-24",
          "frame": "CY2015",
          "unit": "USD/shares"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 0.77,
          "accn": "0001144204-16-090338",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-25",
          "frame": "CY2014",
          "unit": "USD/shares"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 0.97,
          "accn": "0001157523-15-001025",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-26",
          "frame": "CY2013",
          "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": "2019-01-01",
          "end": "2019-12-31",
          "val": 2102000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 2176000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 3564000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 1838000,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 1652000,
          "accn": "0001144204-17-016524",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-24",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 1104000,
          "accn": "0001144204-16-090338",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-25",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 1405000,
          "accn": "0001157523-15-001025",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 524000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 1140000,
          "accn": "0001157523-13-001572",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 1258000,
          "accn": "0001157523-12-001541",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-26",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "PropertyPlantAndEquipmentNet",
      "taxonomy": "us-gaap",
      "label": "Net property, plant and equipment",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Carrying amount of property, plant and equipment after accumulated depreciation, depletion and amortization. It is not replacement cost or market value.",
      "observations": [
        {
          "end": "2019-12-31",
          "val": 3508000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 3924000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 3470000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 3876000,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 3468000,
          "accn": "0001144204-17-016524",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-24",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 3753000,
          "accn": "0001144204-16-090338",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-25",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 3805000,
          "accn": "0001157523-15-001025",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-26",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 2044000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 1168000,
          "accn": "0001157523-13-001572",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 786000,
          "accn": "0001157523-12-001541",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-26",
          "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": "2019-01-01",
          "end": "2019-12-31",
          "val": 345000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 379000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 614000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 537000,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 500000,
          "accn": "0001144204-17-016524",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-24",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 431000,
          "accn": "0001144204-16-090338",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-25",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 462000,
          "accn": "0001157523-15-001025",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 114000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2012",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "InterestExpense",
      "taxonomy": "us-gaap",
      "label": "Interest expense",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Borrowing costs recognized as interest expense. This is distinct from cash interest paid and may not include every capitalized borrowing cost.",
      "observations": [
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 13204000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 8909000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 5688000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 4899000,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 3690000,
          "accn": "0001144204-17-016524",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-24",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 3425000,
          "accn": "0001144204-16-090338",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-25",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 2785000,
          "accn": "0001157523-15-001025",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 2578000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 2703000,
          "accn": "0001157523-13-001572",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 3379000,
          "accn": "0001157523-12-001541",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-26",
          "frame": "CY2010",
          "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": "2019-01-01",
          "end": "2019-12-31",
          "val": 20000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 87000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 93000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 64000,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 68000,
          "accn": "0001144204-17-016524",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-24",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 63000,
          "accn": "0001144204-16-090338",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-25",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 486000,
          "accn": "0001157523-15-001025",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 202000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2012",
          "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": "2019-12-31",
          "val": 2599105,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "unit": "shares"
        },
        {
          "end": "2018-12-31",
          "val": 2525611,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018Q4I",
          "unit": "shares"
        },
        {
          "end": "2017-12-31",
          "val": 2506532,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017Q4I",
          "unit": "shares"
        },
        {
          "end": "2016-12-31",
          "val": 2484852,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016Q4I",
          "unit": "shares"
        },
        {
          "end": "2015-12-31",
          "val": 2458553,
          "accn": "0001144204-17-016524",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-24",
          "frame": "CY2015Q4I",
          "unit": "shares"
        },
        {
          "end": "2014-12-31",
          "val": 2459138,
          "accn": "0001144204-16-090338",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-25",
          "frame": "CY2014Q4I",
          "unit": "shares"
        },
        {
          "end": "2013-12-31",
          "val": 2454465,
          "accn": "0001157523-15-001025",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-26",
          "frame": "CY2013Q4I",
          "unit": "shares"
        },
        {
          "end": "2012-12-31",
          "val": 2480610,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2012Q4I",
          "unit": "shares"
        },
        {
          "end": "2012-01-25",
          "val": 2407151,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2011Q4I",
          "unit": "shares"
        }
      ]
    },
    {
      "tag": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents",
      "taxonomy": "us-gaap",
      "label": "Cash including restricted cash",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Cash, cash equivalents and restricted cash as reported in the cash flow reconciliation. Restricted amounts are not freely available, so this is not the same as unrestricted cash.",
      "observations": [
        {
          "end": "2019-12-31",
          "val": 42094000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 42650000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 28462000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2017Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "AccumulatedOtherComprehensiveIncomeLossNetOfTax",
      "taxonomy": "us-gaap",
      "label": "Accumulated other comprehensive income or loss",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Cumulative other comprehensive items after tax, such as translation and unrealized hedging or securities effects. These amounts have not passed through net income.",
      "observations": [
        {
          "end": "2019-12-31",
          "val": 530000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": -533000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 39000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": -229000,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 162000,
          "accn": "0001144204-17-016524",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-24",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 417000,
          "accn": "0001144204-16-090338",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-25",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 166000,
          "accn": "0001157523-15-001025",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-26",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 790000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 627000,
          "accn": "0001157523-13-001572",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 309000,
          "accn": "0001157523-12-001541",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-26",
          "frame": "CY2010Q4I",
          "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": 74196000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 58528000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 77174000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 83020000,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 72860000,
          "accn": "0001144204-17-016524",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-24",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 59500000,
          "accn": "0001144204-16-090338",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-25",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 43500000,
          "accn": "0001157523-15-001025",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-26",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 31500000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 7500000,
          "accn": "0001157523-13-001572",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 12500000,
          "accn": "0001157523-12-001541",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-26",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "PropertyPlantAndEquipmentGross",
      "taxonomy": "us-gaap",
      "label": "Gross property, plant and equipment",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Cost of property, plant and equipment before accumulated depreciation. Historical cost does not indicate current value or replacement cost.",
      "observations": [
        {
          "end": "2019-12-31",
          "val": 8411000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 8379000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 7543000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 7323000,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 6175000,
          "accn": "0001144204-17-016524",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-24",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 6208000,
          "accn": "0001144204-16-090338",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-25",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 5784000,
          "accn": "0001157523-15-001025",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-26",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 3707000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 2668000,
          "accn": "0001157523-13-001572",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment",
      "taxonomy": "us-gaap",
      "label": "Accumulated depreciation on property, plant and equipment",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Cumulative depreciation, depletion and amortization recorded against property, plant and equipment. It measures cost allocation to date, not physical wear or market value.",
      "observations": [
        {
          "end": "2019-12-31",
          "val": 4903000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 4455000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 4073000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 3447000,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 2707000,
          "accn": "0001144204-17-016524",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-24",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 2455000,
          "accn": "0001144204-16-090338",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-25",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 1979000,
          "accn": "0001157523-15-001025",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-26",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 1663000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 1500000,
          "accn": "0001157523-13-001572",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "DeferredTaxAssetsNet",
      "taxonomy": "us-gaap",
      "label": "Net deferred tax assets",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Deferred tax assets after the valuation allowance. Realization depends on future taxable income, so the balance is not a receivable from tax authorities.",
      "observations": [
        {
          "end": "2019-12-31",
          "val": 3203000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2019Q4I",
          "unit": "USD"
        },
        {
          "end": "2018-12-31",
          "val": 3031000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 2597000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 3286000,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 3112000,
          "accn": "0001144204-17-016524",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-24",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 2855000,
          "accn": "0001144204-16-090338",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-25",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 1997000,
          "accn": "0001157523-15-001025",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-26",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 1933000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 1236000,
          "accn": "0001157523-13-001572",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 1168000,
          "accn": "0001157523-12-001541",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-26",
          "frame": "CY2010Q4I",
          "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": "2019-01-01",
          "end": "2019-12-31",
          "val": 7063000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 5412000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 3453000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 2545000,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 2394000,
          "accn": "0001144204-17-016524",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-24",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 2028000,
          "accn": "0001144204-16-090338",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-25",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 1596000,
          "accn": "0001157523-15-001025",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 1262000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 2323000,
          "accn": "0001157523-13-001572",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 2105000,
          "accn": "0001157523-12-001541",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-26",
          "frame": "CY2010",
          "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": "2019-01-01",
          "end": "2019-12-31",
          "val": 2376000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 2431000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 3324000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 1868000,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 1956000,
          "accn": "0001144204-17-016524",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-24",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 1265000,
          "accn": "0001144204-16-090338",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-25",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 1067000,
          "accn": "0001157523-15-001025",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 1320000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 1410000,
          "accn": "0001157523-13-001572",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "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": "2019-01-01",
          "end": "2019-12-31",
          "val": -274000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -255000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 240000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -30000,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -304000,
          "accn": "0001144204-17-016524",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-24",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -161000,
          "accn": "0001144204-16-090338",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-25",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 338000,
          "accn": "0001157523-15-001025",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-26",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -796000,
          "accn": "0001157523-14-001170",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-24",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -270000,
          "accn": "0001157523-13-001572",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -362000,
          "accn": "0001157523-12-001541",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-26",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "InterestPaidNet",
      "taxonomy": "us-gaap",
      "label": "Interest paid, net",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Cash interest paid during the period, net of amounts capitalized where the filer reports it that way. It differs from interest expense recognized.",
      "observations": [
        {
          "start": "2019-01-01",
          "end": "2019-12-31",
          "val": 12998000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 8709000,
          "accn": "0001104659-20-039282",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-03-27",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 5250000,
          "accn": "0001144204-19-016772",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-03-29",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 4816000,
          "accn": "0001144204-18-017977",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-03-29",
          "frame": "CY2016",
          "unit": "USD"
        }
      ]
    }
  ],
  "source_snapshot": "/company-data/sources/4b51ef3cc5b829a587340ba65c2ac19d351cf4429cbb55c29a620b17f22f0bd6.json.gz"
}
