{
  "schema": "canli.company-reference.v1",
  "cik": "0000949428",
  "name": "CDTi ADVANCED MATERIALS, INC.",
  "selection_policy": "extended-v23",
  "source_url": "https://data.sec.gov/api/xbrl/companyfacts/CIK0000949428.json",
  "source_sha256": "5f7e78b17103da364f7c871a35cb16714da4161db00641a42ec735964b17ae33",
  "fetched_at": "2026-09-22T19:36:56.992Z",
  "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": "2017-12-31",
          "val": 10814000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 24830000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 25102000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 27657000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 28369000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 35441000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 41115000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 32718000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "Liabilities",
      "taxonomy": "us-gaap",
      "label": "Total liabilities",
      "kind": "instant",
      "meaning": "Recognized obligations at the reporting date. The definition and scope differ from interest-bearing debt.",
      "observations": [
        {
          "end": "2016-12-31",
          "val": 16227000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 24665000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 20664000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 22923000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 23995000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 21247000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 17305000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "StockholdersEquity",
      "taxonomy": "us-gaap",
      "label": "Stockholders equity",
      "kind": "instant",
      "meaning": "The reported residual interest after liabilities. It is an accounting amount, not market capitalization.",
      "observations": [
        {
          "end": "2017-12-31",
          "val": 4381000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 8603000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 437000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 6993000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 5446000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 11446000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 19868000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 15413000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2010Q4I",
          "unit": "USD"
        },
        {
          "end": "2009-12-31",
          "val": 5883000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "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": "2011-12-31",
          "val": 3471000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 5007000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "unit": "USD"
        },
        {
          "end": "2009-12-31",
          "val": 2336000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "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": "2017-01-01",
          "end": "2017-12-31",
          "val": -5283000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -23474000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -8534000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -9336000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -7098000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -9660000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -7311000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -8306000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "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": "2017-01-01",
          "end": "2017-12-31",
          "val": -5333000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -7004000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -11581000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -9932000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -431000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -160000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -14623000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -4264000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "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": "2017-01-01",
          "end": "2017-12-31",
          "val": 24000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 146000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 661000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 454000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 135000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 236000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 619000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 422000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "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": "2017-01-01",
          "end": "2017-12-31",
          "val": -3294000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 12135000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 7786000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 12014000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -1382000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 3735000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 13793000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 1993000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "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": "2017-01-01",
          "end": "2017-12-31",
          "val": 3313000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -67000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -453000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 1264000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -852000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -89000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -531000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 5081000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "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": "2017-12-31",
          "val": -228346000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": -223063000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": -199589000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": -191055000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": -181719000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": -174621000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": -164961000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": -157650000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "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": "2017-01-01",
          "end": "2017-12-31",
          "val": 85000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -958000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -399000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 138000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 340000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -367000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 291000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 12000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "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": "2017-12-31",
          "val": 714000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 1158000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 1538000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 1357000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 1372000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 2000000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 2649000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 2884000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "ShareBasedCompensation",
      "taxonomy": "us-gaap",
      "label": "Share-based compensation expense",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Reported noncash expense for share-based payment arrangements. Noncash treatment does not mean the awards have no economic cost to shareholders.",
      "observations": [
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 421000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 1631000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 767000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 639000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 667000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 532000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 1495000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 275000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "OperatingIncomeLoss",
      "taxonomy": "us-gaap",
      "label": "Operating income or loss",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Operating revenue less operating expenses for the reporting period. It excludes items outside the reported operating result and is not free cash flow.",
      "observations": [
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -5884000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -15658000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -10319000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -7625000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -4343000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -7837000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -6523000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -3799000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "AssetsCurrent",
      "taxonomy": "us-gaap",
      "label": "Current assets",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Assets classified as current under the normal operating cycle or one-year boundary. Not all current assets can be converted immediately into cash.",
      "observations": [
        {
          "end": "2017-12-31",
          "val": 8218000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 21330000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 16699000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 17841000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 16814000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 22802000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 27118000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 17553000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "InterestExpense",
      "taxonomy": "us-gaap",
      "label": "Interest expense",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Borrowing costs recognized as interest expense. This is distinct from cash interest paid and may not include every capitalized borrowing cost.",
      "observations": [
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 260000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 1535000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 1166000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 1176000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 1404000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 1479000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 1228000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 3646000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "LiabilitiesCurrent",
      "taxonomy": "us-gaap",
      "label": "Current liabilities",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Obligations classified as current under the operating-cycle or one-year boundary. The balance includes more than short-term borrowing.",
      "observations": [
        {
          "end": "2017-12-31",
          "val": 6433000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 16227000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 16913000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 12829000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 14688000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 15720000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 15768000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 14753000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "AccountsPayableCurrent",
      "taxonomy": "us-gaap",
      "label": "Current accounts payable",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Current amounts owed to suppliers for goods and services received. This is one component of current liabilities, not all accrued obligations.",
      "observations": [
        {
          "end": "2017-12-31",
          "val": 2059000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 5979000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 5012000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 3022000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 5087000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 5608000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 5952000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 4588000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "Goodwill",
      "taxonomy": "us-gaap",
      "label": "Goodwill carrying amount",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Recognized goodwill remaining after accumulated impairment. It arises from business combinations and does not measure the current value of the company’s brand.",
      "observations": [
        {
          "end": "2017-12-31",
          "val": 0,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 0,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 4659000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 5177000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 5584000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 5801000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 5955000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 6040000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "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": "2017-12-31",
          "val": 2097000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 5398000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 4255000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 2875000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 5145000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 5470000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 11695000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 5475000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "OperatingExpenses",
      "taxonomy": "us-gaap",
      "label": "Operating expenses",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Recurring operating costs under this accounting concept, generally excluding production costs included in cost of sales. Check filing presentation before combining expense subtotals.",
      "observations": [
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 11782000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 23724000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 21211000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 20078000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 19304000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 22558000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 24107000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 15834000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "InventoryNet",
      "taxonomy": "us-gaap",
      "label": "Net inventory",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Inventory carrying amount after applicable valuation and LIFO reserves. It does not establish realizable selling proceeds or inventory turnover without other inputs.",
      "observations": [
        {
          "end": "2017-12-31",
          "val": 2647000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 7125000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 7918000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 6298000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 5285000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 8697000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 10288000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 5253000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "GrossProfit",
      "taxonomy": "us-gaap",
      "label": "Gross profit",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Revenue less the costs directly attributed to the goods or services sold. It precedes other operating expenses and is not net income.",
      "observations": [
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 5898000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 8066000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 10892000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 12453000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 14961000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 14721000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 17584000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 12035000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "CostOfRevenue",
      "taxonomy": "us-gaap",
      "label": "Cost of revenue",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Costs attributed to goods produced and sold and services provided during the period. This is not the sum of every operating expense.",
      "observations": [
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 22455000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 28773000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 28846000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 28778000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 36840000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "SellingGeneralAndAdministrativeExpense",
      "taxonomy": "us-gaap",
      "label": "Selling, general and administrative expense",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Selling and general administrative costs reported under this concept. It is an expense category, not a substitute for total operating expenses.",
      "observations": [
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 8292000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 11837000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 11903000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 12374000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 13339000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 14946000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 16699000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 11853000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010",
          "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": "2017-01-01",
          "end": "2017-12-31",
          "val": 3970000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 4657000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 7826000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 6538000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 4726000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 6723000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 7408000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 4373000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "CommonStockSharesOutstanding",
      "taxonomy": "us-gaap",
      "label": "Common shares outstanding",
      "kind": "instant",
      "unitKind": "shares",
      "meaning": "Common shares outstanding at the reporting date. This point-in-time count differs from the weighted-average shares used for earnings per share and can exclude other share classes.",
      "observations": [
        {
          "end": "2017-12-31",
          "val": 15803736,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "unit": "shares"
        },
        {
          "end": "2016-12-31",
          "val": 15703301,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "shares"
        },
        {
          "end": "2015-12-31",
          "val": 3559530,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015Q4I",
          "unit": "shares"
        },
        {
          "end": "2014-12-31",
          "val": 14152772,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014Q4I",
          "unit": "shares"
        },
        {
          "end": "2013-12-31",
          "val": 9299253,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013Q4I",
          "unit": "shares"
        },
        {
          "end": "2012-12-31",
          "val": 7254464,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012Q4I",
          "unit": "shares"
        },
        {
          "end": "2011-12-31",
          "val": 7218807,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011Q4I",
          "unit": "shares"
        },
        {
          "end": "2010-12-31",
          "val": 3959208,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010Q4I",
          "unit": "shares"
        }
      ]
    },
    {
      "tag": "AdditionalPaidInCapital",
      "taxonomy": "us-gaap",
      "label": "Additional paid-in capital",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Capital contributed above par value under this concept. It records historical contributions, not the current value of the equity or cash on hand.",
      "observations": [
        {
          "end": "2017-12-31",
          "val": 238455000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 237838000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 205377000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 200771000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 188108000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013Q4I",
          "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": "2017-12-31",
          "val": -5886000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": -6329000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": -5387000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": -2865000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": -1036000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": -112000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": -716000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": -239000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "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": "2016-12-31",
          "val": 3458000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 11163000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 10491000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 9908000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 13054000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2012Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "PropertyPlantAndEquipmentGross",
      "taxonomy": "us-gaap",
      "label": "Gross property, plant and equipment",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Cost of property, plant and equipment before accumulated depreciation. Historical cost does not indicate current value or replacement cost.",
      "observations": [
        {
          "end": "2017-12-31",
          "val": 7222000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 14461000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 15860000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 15727000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 16069000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 16995000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 16883000,
          "accn": "0001513162-13-000242",
          "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": "2017-12-31",
          "val": 6508000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 13303000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 14322000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 14370000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 14697000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 14995000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 14234000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "IntangibleAssetsNetExcludingGoodwill",
      "taxonomy": "us-gaap",
      "label": "Net intangible assets excluding goodwill",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Intangible assets other than goodwill after amortization and impairment. Internally developed intangibles are usually not recognized, so this understates what a company relies on.",
      "observations": [
        {
          "end": "2017-12-31",
          "val": 1051000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 1483000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 1901000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 2662000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 3438000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 4369000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 4999000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 5995000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "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": "2017-12-31",
          "val": 187000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 305000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 305000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 620000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 718000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 183000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 394000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 246000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "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": "2017-12-31",
          "val": 667000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 968000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 1568000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 1448000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 1428000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 1757000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 1664000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 1818000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "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": "2017-12-31",
          "val": 928000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 1048000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 441000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 466000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 384000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 557000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 546000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011Q4I",
          "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": "2017-01-01",
          "end": "2017-12-31",
          "val": -5198000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -24432000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -8821000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -8975000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -6503000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -10061000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -6929000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -9262000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010",
          "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": "2017-01-01",
          "end": "2017-12-31",
          "val": -4840000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -24416000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -11056000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -11165000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -8022000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -9056000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -7788000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -7656000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "Depreciation",
      "taxonomy": "us-gaap",
      "label": "Depreciation expense",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Depreciation recognized for the period under this concept. It is a noncash allocation of asset cost and may exclude amortization and depletion reported elsewhere.",
      "observations": [
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 200000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 300000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 400000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 400000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 500000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 700000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 800000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "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": "2017-01-01",
          "end": "2017-12-31",
          "val": 680000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 780000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 924000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 1007000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 1193000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 1430000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 1748000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 1286000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "AmortizationOfIntangibleAssets",
      "taxonomy": "us-gaap",
      "label": "Amortization of intangible assets",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Amortization recognized on finite-lived intangible assets. It follows acquisition accounting and does not indicate the intangibles are losing usefulness at that rate.",
      "observations": [
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 400000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 500000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 600000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 600000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 700000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 700000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 900000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "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": "2017-01-01",
          "end": "2017-12-31",
          "val": -188000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 863000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 47000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -174000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -756000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -756000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 805000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -1821000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "NonoperatingIncomeExpense",
      "taxonomy": "us-gaap",
      "label": "Nonoperating income or expense",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Total nonoperating income or expense, which can include interest, investment results and other items. A positive value is not operating profit.",
      "observations": [
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 686000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -8774000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 1498000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -1350000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -2160000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -2224000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -406000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -5463000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "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": "2017-01-01",
          "end": "2017-12-31",
          "val": 181000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -188000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -265000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 465000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 409000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -196000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 425000,
          "accn": "0001513162-13-000242",
          "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": "2017-01-01",
          "end": "2017-12-31",
          "val": -96000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -770000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -134000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -327000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -69000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -171000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -134000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -686000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "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": "2013-01-01",
          "end": "2013-12-31",
          "val": 1193000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 1140000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 1017000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 473000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "IncomeTaxesPaidNet",
      "taxonomy": "us-gaap",
      "label": "Income taxes paid, net",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Cash income taxes paid net of refunds during the period. It differs from income tax expense and can reflect prior years and estimated payments.",
      "observations": [
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 56000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 43000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 227,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 879000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -372000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 105000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 181000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 1500000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010",
          "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": "2014-01-01",
          "end": "2014-12-31",
          "val": 9923000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 1839000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 10181000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "IncreaseDecreaseInAccountsReceivable",
      "taxonomy": "us-gaap",
      "label": "Change in accounts receivable",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "The cash flow adjustment for the change in receivables during the period. A positive value under this concept means receivables grew and reduced operating cash flow.",
      "observations": [
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -3368000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 1124000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 1705000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -2024000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 450000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -6409000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -6532000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -3008000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "IncreaseDecreaseInInventories",
      "taxonomy": "us-gaap",
      "label": "Change in inventories",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "The cash flow adjustment for the change in inventories during the period. A positive value under this concept means inventory grew and reduced operating cash flow.",
      "observations": [
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -2056000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -965000,
          "accn": "0000949428-18-000004",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 2483000,
          "accn": "0000949428-17-000002",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-04-07",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 1359000,
          "accn": "0001047469-16-011746",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-03-30",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -2037000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -483000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -5328000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -1841000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010",
          "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": "2014-01-01",
          "end": "2014-12-31",
          "val": -1932000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -186000,
          "accn": "0001513162-15-000156",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-18",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -428000,
          "accn": "0001513162-14-000192",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-31",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 1458000,
          "accn": "0001513162-13-000242",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-27",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -788000,
          "accn": "0001193125-12-140114",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-29",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    }
  ],
  "source_snapshot": "/company-data/sources/5f7e78b17103da364f7c871a35cb16714da4161db00641a42ec735964b17ae33.json.gz"
}