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            {
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              "val": 163546000,
              "accn": "0001145197-18-000011",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 163281000,
              "accn": "0001145197-18-000015",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-02",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 175040000,
              "accn": "0001145197-19-000003",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26"
            },
            {
              "end": "2018-12-31",
              "val": 175040000,
              "accn": "0001145197-19-000020",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-03",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 187120000,
              "accn": "0001145197-19-000020",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-03",
              "frame": "CY2019Q1I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesDebtSecuritiesCurrent": {
        "label": "Debt Securities, Available-for-sale, Current",
        "description": "Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current.",
        "units": {
          "USD": [
            {
              "end": "2018-12-31",
              "val": 175040000,
              "accn": "0001145197-19-000033",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 175040000,
              "accn": "0001145197-19-000037",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-06"
            },
            {
              "end": "2018-12-31",
              "val": 175000000,
              "accn": "0001145197-20-000004",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-06-30",
              "val": 189881000,
              "accn": "0001145197-19-000033",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 185622000,
              "accn": "0001145197-19-000037",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-06",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 162400000,
              "accn": "0001145197-20-000004",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 162400000,
              "accn": "0001145197-20-000009",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-08"
            },
            {
              "end": "2019-12-31",
              "val": 162400000,
              "accn": "0001145197-20-000026",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-07"
            },
            {
              "end": "2019-12-31",
              "val": 162400000,
              "accn": "0001145197-20-000037",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-05"
            },
            {
              "end": "2019-12-31",
              "val": 162400000,
              "accn": "0001145197-21-000009",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 120200000,
              "accn": "0001145197-20-000009",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-08",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 65300000,
              "accn": "0001145197-20-000026",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-07",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 58600000,
              "accn": "0001145197-20-000037",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-05",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 40400000,
              "accn": "0001145197-21-000009",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 40400000,
              "accn": "0001145197-21-000016",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-07"
            },
            {
              "end": "2020-12-31",
              "val": 40400000,
              "accn": "0001145197-21-000030",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-06"
            },
            {
              "end": "2020-12-31",
              "val": 40400000,
              "accn": "0001145197-21-000041",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-05"
            },
            {
              "end": "2020-12-31",
              "val": 40400000,
              "accn": "0001145197-22-000012",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 29500000,
              "accn": "0001145197-21-000016",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-07",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 17500000,
              "accn": "0001145197-21-000030",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-06",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 500000,
              "accn": "0001145197-21-000041",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-05",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0001145197-22-000012",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-24",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesGrossRealizedGainLossNet": {
        "label": "Available-for-sale Securities, Gross Realized Gain (Loss)",
        "description": "This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities.",
        "units": {
          "USD": [
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0001145197-17-000013",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0001145197-17-000017",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-03",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 0,
              "accn": "0001145197-17-000013",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 0,
              "accn": "0001145197-17-000017",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0001145197-18-000008",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-04",
              "frame": "CY2018Q1"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesGrossRealizedGains": {
        "label": "Available-for-sale Securities, Gross Realized Gains",
        "description": "This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.",
        "units": {
          "USD": [
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0001145197-17-000005",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-28",
              "frame": "CY2016"
            }
          ]
        }
      },
      "BusinessAcquisitionCostOfAcquiredEntityTransactionCosts": {
        "label": "Business Acquisition, Transaction Costs",
        "description": "Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.",
        "units": {
          "USD": [
            {
              "end": "2015-09-30",
              "val": 100000,
              "accn": "0001145197-15-000066",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-06",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 100000,
              "accn": "0001145197-16-000083",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-29"
            },
            {
              "end": "2015-12-31",
              "val": 100000,
              "accn": "0001145197-16-000097",
              "fy": 2015,
              "fp": "FY",
              "form": "8-K",
              "filed": "2016-09-06"
            },
            {
              "end": "2015-12-31",
              "val": 100000,
              "accn": "0001145197-17-000005",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-28",
              "frame": "CY2015Q4I"
            }
          ]
        }
      },
      "BusinessCombinationConsiderationTransferred1": {
        "label": "Business Combination, Consideration Transferred",
        "description": "Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.",
        "units": {
          "USD": [
            {
              "end": "2015-07-07",
              "val": 4715000,
              "accn": "0001145197-15-000066",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-06"
            },
            {
              "end": "2015-07-07",
              "val": 4715000,
              "accn": "0001145197-16-000083",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-29"
            },
            {
              "end": "2015-07-07",
              "val": 4715000,
              "accn": "0001145197-16-000097",
              "fy": 2015,
              "fp": "FY",
              "form": "8-K",
              "filed": "2016-09-06"
            },
            {
              "end": "2015-07-07",
              "val": 4715000,
              "accn": "0001145197-17-000005",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-28"
            },
            {
              "end": "2015-07-07",
              "val": 4700000,
              "accn": "0001145197-18-000004",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-22",
              "frame": "CY2015Q2I"
            }
          ]
        }
      },
      "BusinessCombinationConsiderationTransferredLiabilitiesIncurred": {
        "label": "Business Combination, Consideration Transferred, Liabilities Incurred",
        "description": "Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.",
        "units": {
          "USD": [
            {
              "end": "2015-07-07",
              "val": -285000,
              "accn": "0001145197-15-000066",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-06"
            },
            {
              "end": "2015-07-07",
              "val": -285000,
              "accn": "0001145197-16-000083",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-29"
            },
            {
              "end": "2015-07-07",
              "val": -285000,
              "accn": "0001145197-16-000097",
              "fy": 2015,
              "fp": "FY",
              "form": "8-K",
              "filed": "2016-09-06"
            },
            {
              "end": "2015-07-07",
              "val": 285000,
              "accn": "0001145197-17-000005",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-28",
              "frame": "CY2015Q2I"
            }
          ]
        }
      },
      "BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentIntangibles": {
        "label": "Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles",
        "description": "This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to intangibles acquired in connection with a business combination for which the initial accounting was incomplete.",
        "units": {
          "USD": [
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -530000,
              "accn": "0001193125-13-083603",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K/A",
              "filed": "2013-02-28",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -80000,
              "accn": "0001193125-12-085240",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-28"
            }
          ]
        }
      },
      "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles": {
        "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles",
        "description": "The amount of identifiable intangible assets recognized as of the acquisition date.",
        "units": {
          "USD": [
            {
              "end": "2015-07-07",
              "val": 2100000,
              "accn": "0001145197-15-000066",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-06"
            },
            {
              "end": "2015-07-07",
              "val": 2100000,
              "accn": "0001145197-16-000083",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-29"
            },
            {
              "end": "2015-07-07",
              "val": 2100000,
              "accn": "0001145197-16-000097",
              "fy": 2015,
              "fp": "FY",
              "form": "8-K",
              "filed": "2016-09-06"
            },
            {
              "end": "2015-07-07",
              "val": 2100000,
              "accn": "0001145197-17-000005",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-28"
            },
            {
              "end": "2015-07-07",
              "val": 2100000,
              "accn": "0001145197-18-000004",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-22",
              "frame": "CY2015Q2I"
            }
          ]
        }
      },
      "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory": {
        "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory",
        "description": "The amount of inventory recognized as of the acquisition date.",
        "units": {
          "USD": [
            {
              "end": "2015-07-07",
              "val": 230000,
              "accn": "0001145197-15-000066",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-06"
            },
            {
              "end": "2015-07-07",
              "val": 230000,
              "accn": "0001145197-16-000083",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-29"
            },
            {
              "end": "2015-07-07",
              "val": 230000,
              "accn": "0001145197-16-000097",
              "fy": 2015,
              "fp": "FY",
              "form": "8-K",
              "filed": "2016-09-06"
            },
            {
              "end": "2015-07-07",
              "val": 230000,
              "accn": "0001145197-17-000005",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-28"
            },
            {
              "end": "2015-07-07",
              "val": 230000,
              "accn": "0001145197-18-000004",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-22",
              "frame": "CY2015Q2I"
            }
          ]
        }
      },
      "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities": {
        "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities",
        "description": "Amount of liabilities assumed at the acquisition date.",
        "units": {
          "USD": [
            {
              "end": "2015-07-07",
              "val": 18000,
              "accn": "0001145197-15-000066",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-06"
            },
            {
              "end": "2015-07-07",
              "val": 18000,
              "accn": "0001145197-16-000083",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-29"
            },
            {
              "end": "2015-07-07",
              "val": 18000,
              "accn": "0001145197-16-000097",
              "fy": 2015,
              "fp": "FY",
              "form": "8-K",
              "filed": "2016-09-06"
            },
            {
              "end": "2015-07-07",
              "val": 18000,
              "accn": "0001145197-17-000005",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-28"
            },
            {
              "end": "2015-07-07",
              "val": 18000,
              "accn": "0001145197-18-000004",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-22",
              "frame": "CY2015Q2I"
            }
          ]
        }
      },
      "BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet": {
        "label": "Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net",
        "description": "Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.",
        "units": {
          "USD": [
            {
              "end": "2015-07-07",
              "val": 4715000,
              "accn": "0001145197-15-000066",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-06"
            },
            {
              "end": "2015-07-07",
              "val": 4715000,
              "accn": "0001145197-16-000083",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-29"
            },
            {
              "end": "2015-07-07",
              "val": 4715000,
              "accn": "0001145197-16-000097",
              "fy": 2015,
              "fp": "FY",
              "form": "8-K",
              "filed": "2016-09-06"
            },
            {
              "end": "2015-07-07",
              "val": 4715000,
              "accn": "0001145197-17-000005",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-28"
            },
            {
              "end": "2015-07-07",
              "val": 4715000,
              "accn": "0001145197-18-000004",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-22",
              "frame": "CY2015Q2I"
            }
          ]
        }
      },
      "CapitalExpendituresIncurredButNotYetPaid": {
        "label": "Capital Expenditures Incurred but Not yet Paid",
        "description": "Future cash outflow to pay for purchases of fixed assets that have occurred.",
        "units": {
          "USD": [
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 2000000,
              "accn": "0001145197-17-000013",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 2000000,
              "accn": "0001145197-17-000017",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 4000000,
              "accn": "0001145197-18-000004",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-22",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 1700000,
              "accn": "0001145197-17-000009",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-09",
              "frame": "CY2017Q1"
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          ]
        }
      },
      "CapitalLeasesFutureMinimumPaymentsDue": {
        "label": "Capital Leases, Future Minimum Payments Due",
        "description": "Amount of minimum lease payments for capital leases.",
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          ]
        }
      },
      "CapitalLeasesFutureMinimumPaymentsDueCurrent": {
        "label": "Capital Leases, Future Minimum Payments Due, Next Twelve Months",
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        "label": "Capital Leases, Future Minimum Payments Due in Three Years",
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              "fy": 2013,
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              "form": "10-Q",
              "filed": "2013-11-07",
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      },
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        "label": "Capital Leases, Future Minimum Payments Due in Two Years",
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              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
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              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-26",
              "frame": "CY2014Q4I"
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            {
              "end": "2015-03-31",
              "val": 269000,
              "accn": "0001145197-15-000032",
              "fy": 2015,
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              "form": "10-Q",
              "filed": "2015-04-30",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 269000,
              "accn": "0001145197-15-000059",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-12",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
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              "accn": "0001145197-15-000066",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-06",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 269000,
              "accn": "0001145197-16-000083",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-29"
            },
            {
              "end": "2015-12-31",
              "val": 269000,
              "accn": "0001145197-16-000097",
              "fy": 2015,
              "fp": "FY",
              "form": "8-K",
              "filed": "2016-09-06",
              "frame": "CY2015Q4I"
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          ]
        }
      },
      "CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments": {
        "label": "Capital Leases, Future Minimum Payments, Interest Included in Payments",
        "description": "Amount necessary to reduce net minimum lease payments to present value for capital leases.",
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              "val": 2012000,
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              "form": "10-K",
              "filed": "2014-02-28",
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            },
            {
              "end": "2014-03-31",
              "val": 1676000,
              "accn": "0001145197-14-000025",
              "fy": 2014,
              "fp": "Q1",
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            {
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              "fy": 2014,
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              "end": "2015-03-31",
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              "accn": "0001145197-15-000032",
              "fy": 2015,
              "fp": "Q1",
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              "frame": "CY2015Q1I"
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              "val": 882000,
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              "fy": 2015,
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              "filed": "2015-08-12",
              "frame": "CY2015Q2I"
            },
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              "fy": 2015,
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            {
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              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-04-29",
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            },
            {
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              "fy": 2016,
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            },
            {
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              "filed": "2017-02-28",
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          ]
        }
      },
      "CapitalLeasesFutureMinimumPaymentsNextRollingTwelveMonths": {
        "label": "Capital Leases, Future Minimum Payments, Next Rolling Twelve Months",
        "description": "Amount of minimum lease payments for capital leases due in the next rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
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            {
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              "accn": "0001145197-16-000094",
              "fy": 2016,
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              "form": "10-Q",
              "filed": "2016-08-04",
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            },
            {
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              "fp": "Q3",
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              "filed": "2016-11-04",
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          ]
        }
      },
      "CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments": {
        "label": "Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments",
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              "form": "10-Q",
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            },
            {
              "end": "2014-06-30",
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              "fy": 2014,
              "fp": "Q2",
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              "fy": 2015,
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              "form": "10-Q",
              "filed": "2015-04-30",
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              "end": "2015-06-30",
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              "fy": 2015,
              "fp": "Q2",
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              "frame": "CY2015Q2I"
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            {
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              "fy": 2015,
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              "filed": "2016-02-29"
            },
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              "fy": 2015,
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              "form": "10-Q",
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              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-11-04",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 269000,
              "accn": "0001145197-17-000005",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-28",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
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              "fy": 2017,
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              "form": "10-K",
              "filed": "2018-02-22",
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          ]
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      },
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        "label": "Capital Leases, Future Minimum Payments, Remainder of Fiscal Year",
        "description": "Amount of minimum lease payments for capital leases due in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
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              "accn": "0001145197-13-000035",
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              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2014-03-31",
              "val": 2861000,
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              "fy": 2014,
              "fp": "Q1",
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              "filed": "2014-05-07",
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              "end": "2014-06-30",
              "val": 1907000,
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              "fy": 2014,
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              "form": "10-Q",
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              "frame": "CY2014Q2I"
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            {
              "end": "2014-09-30",
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              "fy": 2014,
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              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2015-03-31",
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              "fy": 2015,
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              "form": "10-Q",
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              "fy": 2015,
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              "form": "10-Q",
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              "frame": "CY2015Q2I"
            },
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              "accn": "0001145197-15-000066",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-06",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2016-03-31",
              "val": 4359000,
              "accn": "0001145197-16-000088",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-04-29",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 2116000,
              "accn": "0001145197-16-000094",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
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              "val": 808000,
              "accn": "0001145197-16-000100",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-11-04",
              "frame": "CY2016Q3I"
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          ]
        }
      },
      "CapitalLeasesIncomeStatementInterestExpense": {
        "label": "Capital Leases, Income Statement, Interest Expense",
        "description": "The financing charge for leasing arrangements meeting the criteria for capitalization.",
        "units": {
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              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 100000,
              "accn": "0001145197-14-000055",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 400000,
              "accn": "0001145197-16-000083",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-29"
            },
            {
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              "accn": "0001145197-16-000097",
              "fy": 2015,
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              "form": "8-K",
              "filed": "2016-09-06",
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              "accn": "0001145197-15-000032",
              "fy": 2015,
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              "filed": "2015-04-30",
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              "accn": "0001145197-15-000059",
              "fy": 2015,
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              "form": "10-Q",
              "filed": "2015-08-12"
            },
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              "accn": "0001145197-15-000059",
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              "filed": "2015-08-12",
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            },
            {
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              "end": "2014-09-30",
              "val": 1000000,
              "accn": "0001145197-14-000055",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
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              "accn": "0001145197-15-000066",
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              "accn": "0001145197-14-000055",
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              "form": "10-Q",
              "filed": "2015-11-06",
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              "val": 1200000,
              "accn": "0001145197-17-000005",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-28",
              "frame": "CY2014"
            },
            {
              "start": "2014-10-01",
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              "val": 1200000,
              "accn": "0001145197-16-000083",
              "fy": 2015,
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              "form": "10-K",
              "filed": "2016-02-29"
            },
            {
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              "val": 1200000,
              "accn": "0001145197-16-000097",
              "fy": 2015,
              "fp": "FY",
              "form": "8-K",
              "filed": "2016-09-06"
            },
            {
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              "accn": "0001145197-17-000005",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-28",
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              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-04-30"
            },
            {
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              "accn": "0001145197-16-000088",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-04-29",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 700000,
              "accn": "0001145197-15-000059",
              "fy": 2015,
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              "form": "10-Q",
              "filed": "2015-08-12"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 700000,
              "accn": "0001145197-16-000094",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
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              "end": "2015-06-30",
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              "accn": "0001145197-15-000059",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
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              "accn": "0001145197-16-000094",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
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              "val": 1000000,
              "accn": "0001145197-15-000066",
              "fy": 2015,
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              "form": "10-Q",
              "filed": "2015-11-06"
            },
            {
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              "end": "2015-09-30",
              "val": 1000000,
              "accn": "0001145197-16-000100",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 300000,
              "accn": "0001145197-15-000066",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-06"
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            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 300000,
              "accn": "0001145197-16-000100",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-11-04",
              "frame": "CY2015Q3"
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            {
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              "end": "2015-12-31",
              "val": 1200000,
              "accn": "0001145197-16-000083",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-29"
            },
            {
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              "val": 1200000,
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              "val": 72000,
              "accn": "0001145197-17-000005",
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              "filed": "2017-02-28"
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            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 72000,
              "accn": "0001145197-18-000004",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-22",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 52000,
              "accn": "0001145197-17-000005",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-28"
            },
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              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 52000,
              "accn": "0001145197-18-000004",
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              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 52000,
              "accn": "0001145197-19-000003",
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              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 151000,
              "accn": "0001145197-18-000004",
              "fy": 2017,
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              "filed": "2018-02-22"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 151000,
              "accn": "0001145197-19-000003",
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              "filed": "2019-02-26"
            },
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              "accn": "0001145197-20-000004",
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            },
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              "val": 209000,
              "accn": "0001145197-19-000003",
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              "filed": "2019-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
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              "fy": 2019,
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              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 200000,
              "accn": "0001145197-21-000009",
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            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 200000,
              "accn": "0001145197-20-000004",
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              "filed": "2020-02-26"
            },
            {
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            },
            {
              "start": "2019-01-01",
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              "accn": "0001145197-22-000012",
              "fy": 2021,
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            },
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            },
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            },
            {
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              "val": 200000,
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            },
            {
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            },
            {
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              "accn": "0001145197-25-000007",
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            },
            {
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            },
            {
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            },
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            },
            {
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              "val": 6400000,
              "accn": "0001145197-25-000007",
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            },
            {
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              "accn": "0001145197-26-000028",
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            },
            {
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              "val": 1800000,
              "accn": "0001145197-26-000028",
              "fy": 2025,
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              "form": "10-K",
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              "frame": "CY2025"
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          ]
        }
      },
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        "label": "Debt Conversion, Converted Instrument, Amount",
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            },
            {
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            {
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              "filed": "2015-02-26",
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            },
            {
              "start": "2013-05-01",
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              "val": 13000000,
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              "filed": "2014-02-28"
            },
            {
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            },
            {
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              "form": "10-K",
              "filed": "2015-02-26",
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            },
            {
              "start": "2014-01-01",
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              "filed": "2015-02-26",
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            },
            {
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              "accn": "0001145197-16-000100",
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            {
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              "filed": "2014-11-05"
            },
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              "start": "2013-05-01",
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              "fy": 2014,
              "fp": "FY",
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              "filed": "2015-02-26"
            },
            {
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              "end": "2013-06-30",
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              "accn": "0001145197-13-000025",
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              "form": "10-Q",
              "filed": "2013-08-08"
            },
            {
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            {
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            },
            {
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              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-06-01",
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              "val": 26523,
              "accn": "0001145197-15-000020",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-26",
              "frame": "CY2013Q2I"
            },
            {
              "start": "2014-07-01",
              "end": "2014-07-31",
              "val": 348535,
              "accn": "0001145197-14-000055",
              "fy": 2014,
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            {
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              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-26"
            },
            {
              "start": "2014-07-01",
              "end": "2014-07-31",
              "val": 348535,
              "accn": "0001145197-15-000032",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-04-30"
            },
            {
              "start": "2014-07-01",
              "end": "2014-07-31",
              "val": 348535,
              "accn": "0001145197-15-000059",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-12"
            },
            {
              "start": "2014-07-01",
              "end": "2014-07-31",
              "val": 348535,
              "accn": "0001145197-15-000066",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-06"
            },
            {
              "start": "2014-07-01",
              "end": "2014-07-31",
              "val": 348535,
              "accn": "0001145197-16-000083",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-29"
            },
            {
              "start": "2014-07-01",
              "end": "2014-07-31",
              "val": 348535,
              "accn": "0001145197-16-000088",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-04-29"
            },
            {
              "start": "2014-07-01",
              "end": "2014-07-31",
              "val": 348535,
              "accn": "0001145197-16-000094",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-07-31",
              "val": 348535,
              "accn": "0001145197-16-000097",
              "fy": 2015,
              "fp": "FY",
              "form": "8-K",
              "filed": "2016-09-06"
            },
            {
              "start": "2014-07-01",
              "end": "2014-07-31",
              "val": 348535,
              "accn": "0001145197-16-000100",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-07-31",
              "val": 348535,
              "accn": "0001145197-17-000005",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-28",
              "frame": "CY2014Q2I"
            }
          ]
        }
      },
      "DebtInstrumentFaceAmount": {
        "label": "Debt Instrument, Face Amount",
        "description": "Face (par) amount of debt instrument at time of issuance.",
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              "end": "2013-12-31",
              "val": 143750000,
              "accn": "0001145197-14-000025",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 143750000,
              "accn": "0001145197-14-000025",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2015-12-31",
              "val": 201250000,
              "accn": "0001145197-16-000088",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-04-29"
            },
            {
              "end": "2015-12-31",
              "val": 201250000,
              "accn": "0001145197-16-000094",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 201250000,
              "accn": "0001145197-16-000088",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-04-29",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 201250000,
              "accn": "0001145197-16-000094",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            }
          ]
        }
      },
      "DebtInstrumentUnamortizedDiscount": {
        "label": "Debt Instrument, Unamortized Discount",
        "description": "Amount, after accumulated amortization, of debt discount.",
        "units": {
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            {
              "end": "2009-09-30",
              "val": 1900000,
              "accn": "0001193125-12-085240",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-28"
            },
            {
              "end": "2009-09-30",
              "val": 1900000,
              "accn": "0001193125-13-083603",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K/A",
              "filed": "2013-02-28"
            },
            {
              "end": "2009-09-30",
              "val": 1900000,
              "accn": "0001193125-13-083670",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-28",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 15567000,
              "accn": "0001193125-12-085240",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-28"
            },
            {
              "end": "2010-12-31",
              "val": 15567000,
              "accn": "0001193125-13-083603",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K/A",
              "filed": "2013-02-28",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 50210000,
              "accn": "0001193125-12-085240",
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        "label": "Loss Contingency Accrual, Period Increase (Decrease)",
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        "label": "Loss Contingency, Claims Dismissed, Number",
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      },
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        "label": "Loss Contingency, Damages Paid, Value",
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              "fy": 2018,
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              "accn": "0001145197-18-000008",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-04",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 11910000,
              "accn": "0001145197-18-000011",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-12-31",
              "val": 12529000,
              "accn": "0001145197-19-000003",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2018Q4I"
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          ]
        }
      },
      "OperatingLeasesFutureMinimumPaymentsDueCurrent": {
        "label": "Operating Leases, Future Minimum Payments Due, Next Twelve Months",
        "description": "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
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            },
            {
              "end": "2011-12-31",
              "val": 1442000,
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              "fy": 2011,
              "fp": "FY",
              "form": "10-K/A",
              "filed": "2013-02-28",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-06-30",
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              "accn": "0001193125-12-344298",
              "fy": 2012,
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            },
            {
              "end": "2012-06-30",
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              "fp": "Q2",
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              "filed": "2013-02-28",
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            {
              "end": "2012-09-30",
              "val": 1392000,
              "accn": "0001193125-12-460797",
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            },
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              "end": "2012-12-31",
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            {
              "end": "2013-03-31",
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              "form": "10-Q",
              "filed": "2013-05-08",
              "frame": "CY2013Q1I"
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              "fy": 2013,
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            {
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              "fy": 2013,
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              "fp": "Q2",
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              "filed": "2014-08-07",
              "frame": "CY2014Q2I"
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            {
              "end": "2014-09-30",
              "val": 2096000,
              "accn": "0001145197-14-000055",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
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              "fy": 2014,
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              "form": "10-K",
              "filed": "2015-02-26",
              "frame": "CY2014Q4I"
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              "fy": 2015,
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              "form": "10-Q",
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              "frame": "CY2015Q3I"
            },
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              "fy": 2016,
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            {
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              "accn": "0001145197-16-000094",
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              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
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            },
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              "accn": "0001145197-16-000100",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-11-04",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 2560000,
              "accn": "0001145197-17-000005",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-28",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 2684000,
              "accn": "0001145197-17-000009",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-09",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 2684000,
              "accn": "0001145197-17-000013",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-04",
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            },
            {
              "end": "2017-09-30",
              "val": 2702000,
              "accn": "0001145197-17-000017",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-03",
              "frame": "CY2017Q3I"
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            {
              "end": "2017-12-31",
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              "accn": "0001145197-18-000004",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-22",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
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              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-04",
              "frame": "CY2018Q1I"
            },
            {
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              "val": 3035000,
              "accn": "0001145197-18-000011",
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              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-12-31",
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              "accn": "0001145197-19-000003",
              "fy": 2018,
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              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2018Q4I"
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          ]
        }
      },
      "OperatingLeasesFutureMinimumPaymentsDueInFiveYears": {
        "label": "Operating Leases, Future Minimum Payments, Due in Five Years",
        "description": "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "units": {
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              "end": "2013-12-31",
              "val": 2012000,
              "accn": "0001145197-14-000013",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-28",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 2012000,
              "accn": "0001145197-14-000025",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-12-31",
              "val": 2181000,
              "accn": "0001145197-15-000020",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-26",
              "frame": "CY2014Q4I"
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            {
              "end": "2015-12-31",
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              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-29"
            },
            {
              "end": "2015-12-31",
              "val": 2146000,
              "accn": "0001145197-16-000097",
              "fy": 2015,
              "fp": "FY",
              "form": "8-K",
              "filed": "2016-09-06",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 2383000,
              "accn": "0001145197-17-000005",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-28",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 2131000,
              "accn": "0001145197-18-000004",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-22",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 263000,
              "accn": "0001145197-19-000003",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2018Q4I"
            }
          ]
        }
      },
      "OperatingLeasesFutureMinimumPaymentsDueInFourYears": {
        "label": "Operating Leases, Future Minimum Payments, Due in Four Years",
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              "accn": "0001193125-12-085240",
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              "fp": "FY",
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              "filed": "2013-02-28",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2013-12-31",
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              "accn": "0001145197-14-000013",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-28",
              "frame": "CY2013Q4I"
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            {
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              "accn": "0001145197-14-000025",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 2144000,
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              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-07",
              "frame": "CY2014Q2I"
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              "end": "2014-09-30",
              "val": 2144000,
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              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 2290000,
              "accn": "0001145197-15-000020",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-26",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 2181000,
              "accn": "0001145197-15-000032",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-04-30",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 2181000,
              "accn": "0001145197-15-000059",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-12",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 2181000,
              "accn": "0001145197-15-000066",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-06",
              "frame": "CY2015Q3I"
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              "end": "2015-12-31",
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              "fy": 2015,
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              "filed": "2016-02-29"
            },
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              "accn": "0001145197-16-000097",
              "fy": 2015,
              "fp": "FY",
              "form": "8-K",
              "filed": "2016-09-06",
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              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-28",
              "frame": "CY2016Q4I"
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            {
              "end": "2017-12-31",
              "val": 2383000,
              "accn": "0001145197-18-000004",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-22",
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              "val": 2568000,
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              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2018Q4I"
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          ]
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              "form": "10-Q",
              "filed": "2016-04-29",
              "frame": "CY2016Q1I"
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              "frame": "CY2016Q2I"
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              "filed": "2017-05-09",
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              "form": "10-Q",
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              "frame": "CY2018Q1I"
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              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
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        "label": "Operating Leases, Future Minimum Payments, Due in Rolling Year Three",
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        "units": {
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              "end": "2016-03-31",
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              "accn": "0001145197-16-000088",
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              "form": "10-Q",
              "filed": "2016-04-29",
              "frame": "CY2016Q1I"
            },
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              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 2390000,
              "accn": "0001145197-16-000100",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-11-04",
              "frame": "CY2016Q3I"
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              "end": "2017-03-31",
              "val": 2402000,
              "accn": "0001145197-17-000009",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-09",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 2402000,
              "accn": "0001145197-17-000013",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-04",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 2402000,
              "accn": "0001145197-17-000017",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-03",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2018-03-31",
              "val": 2383000,
              "accn": "0001145197-18-000008",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-04",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 2402000,
              "accn": "0001145197-18-000011",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
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        }
      },
      "OperatingLeasesFutureMinimumPaymentsDueInRollingYearTwo": {
        "label": "Operating Leases, Future Minimum Payments, Due in Rolling Year Two",
        "description": "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "units": {
          "USD": [
            {
              "end": "2016-03-31",
              "val": 2162000,
              "accn": "0001145197-16-000088",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-04-29",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 2162000,
              "accn": "0001145197-16-000094",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 2383000,
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              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-11-04",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2017-03-31",
              "val": 2681000,
              "accn": "0001145197-17-000009",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-09",
              "frame": "CY2017Q1I"
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            {
              "end": "2017-06-30",
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              "accn": "0001145197-17-000013",
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              "form": "10-Q",
              "filed": "2017-08-04",
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            },
            {
              "end": "2017-09-30",
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              "fy": 2017,
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              "form": "10-Q",
              "filed": "2017-11-03",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2018-03-31",
              "val": 2619000,
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              "fy": 2018,
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            {
              "end": "2018-06-30",
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              "frame": "CY2018Q2I"
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          ]
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      },
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        "label": "Operating Leases, Future Minimum Payments, Due in Three Years",
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            {
              "end": "2011-12-31",
              "val": 777000,
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              "fy": 2011,
              "fp": "FY",
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              "filed": "2013-02-28",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-06-30",
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              "accn": "0001193125-12-344298",
              "fy": 2012,
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            },
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              "filed": "2013-02-28",
              "frame": "CY2012Q4I"
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            {
              "end": "2013-12-31",
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              "accn": "0001145197-14-000013",
              "fy": 2013,
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              "form": "10-K",
              "filed": "2014-02-28",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 1934000,
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              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
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              "accn": "0001145197-14-000042",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-07",
              "frame": "CY2014Q2I"
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            {
              "end": "2014-09-30",
              "val": 2139000,
              "accn": "0001145197-14-000055",
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              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
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              "fy": 2014,
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              "filed": "2015-02-26",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 2290000,
              "accn": "0001145197-15-000032",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-04-30",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 2308000,
              "accn": "0001145197-15-000059",
              "fy": 2015,
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              "form": "10-Q",
              "filed": "2015-08-12",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 2308000,
              "accn": "0001145197-15-000066",
              "fy": 2015,
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              "form": "10-Q",
              "filed": "2015-11-06",
              "frame": "CY2015Q3I"
            },
            {
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              "accn": "0001145197-16-000083",
              "fy": 2015,
              "fp": "FY",
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              "filed": "2016-02-29"
            },
            {
              "end": "2015-12-31",
              "val": 2160000,
              "accn": "0001145197-16-000097",
              "fy": 2015,
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              "form": "8-K",
              "filed": "2016-09-06",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 2455000,
              "accn": "0001145197-17-000005",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-28",
              "frame": "CY2016Q4I"
            },
            {
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              "val": 2611000,
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            {
              "end": "2018-12-31",
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              "fy": 2018,
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      },
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              "filed": "2013-02-28",
              "frame": "CY2011Q4I"
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              "form": "10-K",
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              "frame": "CY2012Q4I"
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              "accn": "0001145197-13-000009",
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              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
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              "accn": "0001145197-14-000013",
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              "filed": "2014-02-28",
              "frame": "CY2013Q4I"
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              "end": "2014-09-30",
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              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 2196000,
              "accn": "0001145197-15-000020",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-26",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 2284000,
              "accn": "0001145197-15-000032",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-04-30",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
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              "form": "10-Q",
              "filed": "2015-08-12",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 2327000,
              "accn": "0001145197-15-000066",
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              "form": "10-Q",
              "filed": "2015-11-06",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 2322000,
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            },
            {
              "end": "2015-12-31",
              "val": 2178000,
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              "fy": 2015,
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              "form": "8-K",
              "filed": "2016-09-06",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
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              "accn": "0001145197-17-000005",
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              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-28",
              "frame": "CY2016Q4I"
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              "frame": "CY2017Q4I"
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          ]
        }
      },
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        "label": "Operating Leases, Future Minimum Payments, Due Thereafter",
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              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
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              "accn": "0001145197-14-000042",
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              "filed": "2014-08-07",
              "frame": "CY2014Q2I"
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              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
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              "accn": "0001145197-16-000100",
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              "form": "10-Q",
              "filed": "2016-11-04",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 2131000,
              "accn": "0001145197-17-000005",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-28",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
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              "form": "10-Q",
              "filed": "2017-05-09",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
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              "accn": "0001145197-17-000013",
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              "form": "10-Q",
              "filed": "2017-08-04",
              "frame": "CY2017Q2I"
            },
            {
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              "accn": "0001145197-17-000017",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-03",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0001145197-18-000004",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-22",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 0,
              "accn": "0001145197-18-000008",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-04",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 0,
              "accn": "0001145197-18-000011",
              "fy": 2018,
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              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-12-31",
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              "form": "10-K",
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              "frame": "CY2018Q4I"
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          ]
        }
      },
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        "label": "Operating Leases, Future Minimum Payments, Remainder of Fiscal Year",
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              "form": "10-Q/A",
              "filed": "2013-02-28",
              "frame": "CY2012Q2I"
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            {
              "end": "2012-09-30",
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              "accn": "0001193125-12-460797",
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              "form": "10-Q",
              "filed": "2012-11-08"
            },
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              "end": "2012-09-30",
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              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2013-02-28",
              "frame": "CY2012Q3I"
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            {
              "end": "2013-03-31",
              "val": 1124000,
              "accn": "0001145197-13-000009",
              "fy": 2013,
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              "form": "10-Q",
              "filed": "2013-05-08",
              "frame": "CY2013Q1I"
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            },
            {
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              "val": 0,
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            {
              "start": "2021-07-01",
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            {
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            },
            {
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              "end": "2022-09-30",
              "val": 0,
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            {
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              "form": "10-Q",
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            {
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            },
            {
              "end": "2012-06-30",
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            {
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            {
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              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-06",
              "frame": "CY2026Q1"
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              "start": "2026-01-01",
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              "val": 0,
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              "fy": 2026,
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      "RepaymentsOfDebt": {
        "label": "Repayments of Debt",
        "description": "The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.",
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            },
            {
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              "fy": 2013,
              "fp": "Q3",
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              "val": 1300000,
              "accn": "0001145197-21-000041",
              "fy": 2021,
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      "RepaymentsOfLinesOfCredit": {
        "label": "Repayments of Lines of Credit",
        "description": "Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.",
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              "val": 27500000,
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              "form": "10-K",
              "filed": "2013-02-28"
            },
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              "fy": 2011,
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              "form": "10-K/A",
              "filed": "2013-02-28"
            },
            {
              "start": "2009-09-01",
              "end": "2009-09-30",
              "val": 27500000,
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              "fy": 2011,
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              "form": "10-K",
              "filed": "2012-02-28"
            },
            {
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              "accn": "0001193125-13-083670",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-28",
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              "filed": "2013-02-28"
            },
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              "fy": 2011,
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              "filed": "2012-02-28"
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          ]
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        "label": "Repayments of Long-term Capital Lease Obligations",
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              "filed": "2016-09-06",
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              "val": 618000,
              "accn": "0001145197-14-000025",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
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              "fy": 2015,
              "fp": "Q1",
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              "frame": "CY2014Q1"
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              "form": "8-K",
              "filed": "2016-09-06"
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            },
            {
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              "fy": 2015,
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            },
            {
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            },
            {
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            {
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        }
      },
      "RepaymentsOfLongTermDebt": {
        "label": "Repayments of Long-term Debt",
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            {
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              "frame": "CY2025Q1I"
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            {
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        "label": "Capitalized Computer Software, Gross",
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