{
  "schema": "canli.company-reference.v1",
  "cik": "0000920448",
  "name": "BROADVISION INC",
  "selection_policy": "extended-v23",
  "source_url": "https://data.sec.gov/api/xbrl/companyfacts/CIK0000920448.json",
  "source_sha256": "2d0c58a21eabdb1414ec2f2278e13a9d530126638dd6279a74df9cc50a164d9b",
  "fetched_at": "2026-09-22T19:36:23.034Z",
  "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": "2018-12-31",
          "val": 3853000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 11979000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 21993000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 32210000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 41826000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 51609000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 57886000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 61002000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 68152000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "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": "2018-12-31",
          "val": 2452000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 4670000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 5130000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 6701000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 6213000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 8195000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 10229000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 11232000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 13795000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "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": "2018-12-31",
          "val": 1401000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 7309000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 16863000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 25509000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 35613000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 43414000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 47657000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 49770000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 54357000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2010Q4I",
          "unit": "USD"
        },
        {
          "end": "2009-12-31",
          "val": 55393000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "frame": "CY2009Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "CashAndCashEquivalentsAtCarryingValue",
      "taxonomy": "us-gaap",
      "label": "Cash and cash equivalents",
      "kind": "instant",
      "meaning": "Cash and qualifying short-term liquid investments under the filer’s accounting policy. Restricted cash and longer-term investments may be reported separately.",
      "observations": [
        {
          "end": "2018-12-31",
          "val": 2574000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 8560000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 11730000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 9600000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 24941000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 36865000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 23789000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 45405000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 32966000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2010Q4I",
          "unit": "USD"
        },
        {
          "end": "2009-12-31",
          "val": 21580000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "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": "2018-01-01",
          "end": "2018-12-31",
          "val": -7000000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -9899000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -9485000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -11437000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -9481000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -5422000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -5052000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -5389000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -2884000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "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": "2018-01-01",
          "end": "2018-12-31",
          "val": -7104000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -9625000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -9978000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -6292000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -5006000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -6602000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -2991000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "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": "2018-01-01",
          "end": "2018-12-31",
          "val": 15000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 7000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 14000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 16000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 24000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 70000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 281000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 33000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 49000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "Revenues",
      "taxonomy": "us-gaap",
      "label": "Revenue",
      "kind": "duration",
      "meaning": "Revenue under this specific accounting concept. A missing value is not zero; filers can use other revenue concepts.",
      "observations": [
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 5051000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 6357000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 7940000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 9442000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 13585000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 15599000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 15126000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 17554000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 21817000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "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": "2018-01-01",
          "end": "2018-12-31",
          "val": 10000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 79000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 557000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 484000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 2167000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 350000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 438000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "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": "2018-01-01",
          "end": "2018-12-31",
          "val": 985000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 6967000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -2626000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 18886000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -18937000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 18815000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 13634000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "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": "2018-12-31",
          "val": -1269113000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": -1262718000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": -1252819000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": -1243334000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": -1231897000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": -1222416000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": -1216994000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": -1211942000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": -1206553000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "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": "2018-01-01",
          "end": "2018-12-31",
          "val": -31000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -112000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 48000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 29000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 157000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 122000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 134000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 121000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 263000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "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": "2018-12-31",
          "val": 15000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 35000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 60000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 87000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 148000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 242000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 306000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 143000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 264000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "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": "2018-01-01",
          "end": "2018-12-31",
          "val": 354000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 857000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 875000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 1064000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 1000000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 697000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 612000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 576000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 1105000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "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": "2018-01-01",
          "end": "2018-12-31",
          "val": -6844000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -10763000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -9954000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -9660000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -7397000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -5777000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -6175000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -5550000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -4259000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "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": "2018-12-31",
          "val": 3742000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 11736000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 21786000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 31980000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 41484000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 51171000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 57374000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 60715000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 66569000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "frame": "CY2010Q4I",
          "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": "2018-12-31",
          "val": 1889000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 4087000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 4396000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 5783000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 5439000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 7417000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 9042000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 10296000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 11669000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "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": "2018-12-31",
          "val": 256000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 434000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 377000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 551000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 482000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 503000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 679000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 595000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 654000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "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": "2018-12-31",
          "val": 476000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 1193000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 896000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 1751000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 3286000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 3533000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 4018000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 4100000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 4277000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "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": "2018-01-01",
          "end": "2018-12-31",
          "val": 9937000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 13972000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 14570000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 15609000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 16427000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 16535000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 16299000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 17091000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 19723000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "frame": "CY2010",
          "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": "2018-01-01",
          "end": "2018-12-31",
          "val": 3093000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 3209000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 4616000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 5949000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 9030000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 10758000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 10124000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 11541000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 15464000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "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": "2018-01-01",
          "end": "2018-12-31",
          "val": 5020000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 6563000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 6901000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 7219000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 7311000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 7067000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 6445000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 6356000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 7296000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "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": "2018-12-31",
          "val": 5057000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "unit": "shares"
        },
        {
          "end": "2017-12-31",
          "val": 4995000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017Q4I",
          "unit": "shares"
        },
        {
          "end": "2016-12-31",
          "val": 4958000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "shares"
        },
        {
          "end": "2015-12-31",
          "val": 4895000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015Q4I",
          "unit": "shares"
        },
        {
          "end": "2014-12-31",
          "val": 4832000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014Q4I",
          "unit": "shares"
        },
        {
          "end": "2013-12-31",
          "val": 4754000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "shares"
        },
        {
          "end": "2012-12-31",
          "val": 4685000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "shares"
        },
        {
          "end": "2011-12-31",
          "val": 4529000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "shares"
        },
        {
          "end": "2010-12-31",
          "val": 4482000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "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": "2018-12-31",
          "val": 1271949000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 1271585000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 1270649000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 1269582000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 1268243000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 1266686000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 1265505000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 1262726000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 1261800000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "frame": "CY2010Q4I",
          "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": "2018-12-31",
          "val": -1435000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": -1558000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": -967000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": -739000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": -733000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": -856000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": -854000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": -1014000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": -890000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "PropertyPlantAndEquipmentGross",
      "taxonomy": "us-gaap",
      "label": "Gross property, plant and equipment",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Cost of property, plant and equipment before accumulated depreciation. Historical cost does not indicate current value or replacement cost.",
      "observations": [
        {
          "end": "2018-12-31",
          "val": 2081000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 2517000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 2512000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 2513000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 2576000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 3480000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 3699000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 4379000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "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": "2018-12-31",
          "val": 2066000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2018Q4I",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 2482000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 2452000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 2426000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 2428000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 3238000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 3393000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 4236000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "OtherAssetsNoncurrent",
      "taxonomy": "us-gaap",
      "label": "Other noncurrent assets",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Noncurrent assets the filer does not present separately. The composition differs by filer and is described only in the filing.",
      "observations": [
        {
          "end": "2018-12-31",
          "val": 96000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 208000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 147000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 143000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 194000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 196000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 206000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 144000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 319000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "OtherLiabilitiesNoncurrent",
      "taxonomy": "us-gaap",
      "label": "Other noncurrent liabilities",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Noncurrent liabilities the filer does not present separately. The composition differs by filer and is described only in the filing.",
      "observations": [
        {
          "end": "2018-12-31",
          "val": 563000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 583000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 734000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 918000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 774000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 778000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 1187000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 936000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 2126000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "AccruedLiabilitiesCurrent",
      "taxonomy": "us-gaap",
      "label": "Accrued current liabilities",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Current obligations accrued for goods and services received but not yet invoiced or paid. This is one component of current liabilities, not all short-term obligations.",
      "observations": [
        {
          "end": "2018-12-31",
          "val": 847000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 1658000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 1866000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 2161000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 2292000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 2425000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 2242000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 2783000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 3194000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "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": "2018-12-31",
          "val": 692000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "unit": "USD"
        },
        {
          "end": "2017-12-31",
          "val": 983000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017Q4I",
          "unit": "USD"
        },
        {
          "end": "2016-12-31",
          "val": 1186000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016Q4I",
          "unit": "USD"
        },
        {
          "end": "2015-12-31",
          "val": 1098000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015Q4I",
          "unit": "USD"
        },
        {
          "end": "2014-12-31",
          "val": 1119000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014Q4I",
          "unit": "USD"
        },
        {
          "end": "2013-12-31",
          "val": 1238000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013Q4I",
          "unit": "USD"
        },
        {
          "end": "2012-12-31",
          "val": 1075000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012Q4I",
          "unit": "USD"
        },
        {
          "end": "2011-12-31",
          "val": 1179000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011Q4I",
          "unit": "USD"
        },
        {
          "end": "2010-12-31",
          "val": 1469000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "frame": "CY2010Q4I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "ComprehensiveIncomeNetOfTax",
      "taxonomy": "us-gaap",
      "label": "Comprehensive income or loss",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Net income plus other comprehensive income after tax. It includes unrealized items that net income excludes and is not a cash measure.",
      "observations": [
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": -6877000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -10490000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -9713000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -11443000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -9358000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -5424000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -4892000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -5513000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "GeneralAndAdministrativeExpense",
      "taxonomy": "us-gaap",
      "label": "General and administrative expense",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "General and administrative costs reported under this concept, separate from selling expense. Filers group overhead differently, so compare presentation before comparing companies.",
      "observations": [
        {
          "start": "2018-01-01",
          "end": "2018-12-31",
          "val": 3088000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 3733000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 3618000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 3501000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 3902000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 3851000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 3981000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 3976000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 4481000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "frame": "CY2010",
          "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": "2018-01-01",
          "end": "2018-12-31",
          "val": 22000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 32000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 41000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 77000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 118000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 134000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 117000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 154000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 164000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "frame": "CY2010",
          "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": "2018-01-01",
          "end": "2018-12-31",
          "val": -254000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 623000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 431000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -1824000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -1981000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 342000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 865000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -162000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 1234000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "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": "2018-01-01",
          "end": "2018-12-31",
          "val": -187000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 752000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 517000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -1748000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -1927000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 477000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 1257000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 282000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": 1638000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "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": "2018-01-01",
          "end": "2018-12-31",
          "val": -31000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": -112000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 48000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 29000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 157000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 122000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 134000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 121000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "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": "2018-01-01",
          "end": "2018-12-31",
          "val": -820000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 77769000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": 3043000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": 2224000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": 0,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 0,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": 0,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": 0,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011",
          "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": "2015-01-01",
          "end": "2015-12-31",
          "val": 1000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -138000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": 31000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013",
          "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": "2018-01-01",
          "end": "2018-12-31",
          "val": -819000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-01-01",
          "end": "2017-12-31",
          "val": 412000,
          "accn": "0001562762-19-000093",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-04-01",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-01-01",
          "end": "2016-12-31",
          "val": -818000,
          "accn": "0000920448-18-000020",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-04-02",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-01-01",
          "end": "2015-12-31",
          "val": -1544000,
          "accn": "0000920448-17-000021",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-03-30",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-01-01",
          "end": "2014-12-31",
          "val": -184000,
          "accn": "0000920448-16-000127",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-04-14",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-01-01",
          "end": "2013-12-31",
          "val": -405000,
          "accn": "0000920448-15-000022",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-03-13",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-01-01",
          "end": "2012-12-31",
          "val": -24000,
          "accn": "0000920448-14-000019",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-03-14",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-01-01",
          "end": "2011-12-31",
          "val": -173000,
          "accn": "0000920448-13-000020",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-03-15",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-01-01",
          "end": "2010-12-31",
          "val": -2839000,
          "accn": "0000920448-12-000014",
          "fy": 2011,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-03-08",
          "frame": "CY2010",
          "unit": "USD"
        }
      ]
    }
  ],
  "source_snapshot": "/company-data/sources/2d0c58a21eabdb1414ec2f2278e13a9d530126638dd6279a74df9cc50a164d9b.json.gz"
}
