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longer).","units":{"USD":[{"end":"2010-12-31","val":1751000,"accn":"0000950123-11-076644","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-12"},{"end":"2010-12-31","val":1751000,"accn":"0000950123-11-097860","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-14"},{"end":"2010-12-31","val":1751000,"accn":"0001193125-12-129225","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-23","frame":"CY2010Q4I"},{"end":"2011-06-30","val":2029000,"accn":"0000950123-11-076644","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-12","frame":"CY2011Q2I"},{"end":"2011-09-30","val":1551000,"accn":"0000950123-11-097860","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-14","frame":"CY2011Q3I"},{"end":"2011-12-31","val":2327000,"accn":"0001193125-12-129225","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-23"},{"end":"2011-12-31","val":2327000,"accn":"0001193125-12-230165","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-14"},{"end":"2011-12-31","val":2327000,"accn":"0001193125-12-351637","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-13"},{"end":"2011-12-31","val":2327000,"accn":"0001193125-12-469325","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-11-14"},{"end":"2011-12-31","val":2237000,"accn":"0001193125-12-469358","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-14"},{"end":"2011-12-31","val":2327000,"accn":"0001193125-13-121356","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-22","frame":"CY2011Q4I"},{"end":"2012-03-31","val":1861000,"accn":"0001193125-12-230165","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-14","frame":"CY2012Q1I"},{"end":"2012-06-30","val":1741000,"accn":"0001193125-12-351637","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-13"},{"end":"2012-06-30","val":1741000,"accn":"0001193125-12-469325","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-11-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":1796000,"accn":"0001193125-12-469358","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-14","frame":"CY2012Q3I"},{"end":"2012-12-31","val":1625000,"accn":"0001193125-13-121356","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-22"},{"end":"2012-12-31","val":1625000,"accn":"0001193125-13-218822","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-14"},{"end":"2012-12-31","val":1625000,"accn":"0001193125-13-332505","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-13"},{"end":"2012-12-31","val":1625000,"accn":"0001193125-13-439718","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-13"},{"end":"2012-12-31","val":1625000,"accn":"0001193125-14-119886","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-28","frame":"CY2012Q4I"},{"end":"2013-03-31","val":1567000,"accn":"0001193125-13-218822","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-14","frame":"CY2013Q1I"},{"end":"2013-06-30","val":1939000,"accn":"0001193125-13-332505","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-13","frame":"CY2013Q2I"},{"end":"2013-09-30","val":1941000,"accn":"0001193125-13-439718","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-13","frame":"CY2013Q3I"},{"end":"2013-12-31","val":1677000,"accn":"0001193125-14-119886","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-28"},{"end":"2013-12-31","val":1677000,"accn":"0001193125-14-196541","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-13"},{"end":"2013-12-31","val":1677000,"accn":"0001193125-14-304612","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-11"},{"end":"2013-12-31","val":1677000,"accn":"0001193125-14-408397","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-12"},{"end":"2013-12-31","val":1677000,"accn":"0001193125-15-100060","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-20","frame":"CY2013Q4I"},{"end":"2014-03-31","val":1932000,"accn":"0001193125-14-196541","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-13","frame":"CY2014Q1I"},{"end":"2014-06-30","val":1891000,"accn":"0001193125-14-304612","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-11","frame":"CY2014Q2I"},{"end":"2014-09-30","val":1838000,"accn":"0001193125-14-408397","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-12","frame":"CY2014Q3I"},{"end":"2014-12-31","val":1810000,"accn":"0001193125-15-100060","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-20"},{"end":"2014-12-31","val":1810000,"accn":"0001193125-15-185352","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-13"},{"end":"2014-12-31","val":1810000,"accn":"0001193125-15-287924","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-12"},{"end":"2014-12-31","val":1810000,"accn":"0001564590-15-010484","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-12"},{"end":"2014-12-31","val":1810000,"accn":"0001564590-16-015102","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-21","frame":"CY2014Q4I"},{"end":"2015-03-31","val":2165000,"accn":"0001193125-15-185352","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-13","frame":"CY2015Q1I"},{"end":"2015-06-30","val":2059000,"accn":"0001193125-15-287924","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-12","frame":"CY2015Q2I"},{"end":"2015-09-30","val":1755000,"accn":"00015645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Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).","units":{"USD":[{"end":"2011-12-31","val":380000,"accn":"0001193125-13-121356","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-22","frame":"CY2011Q4I"},{"end":"2012-12-31","val":168000,"accn":"0001193125-13-121356","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-22"},{"end":"2012-12-31","val":168000,"accn":"0001193125-14-119886","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-28","frame":"CY2012Q4I"},{"end":"2013-12-31","val":165000,"accn":"0001193125-14-119886","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-28"},{"end":"2013-12-31","val":165000,"accn":"0001193125-15-100060","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-20","frame":"CY2013Q4I"},{"end":"2014-12-31","val":182000,"accn":"0001193125-15-100060","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-20"},{"end":"2014-12-31","val":182000,"accn":"0001564590-16-015102","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-21","frame":"CY2014Q4I"},{"end":"2015-12-31","val":194000,"accn":"0001564590-16-015102","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-21","frame":"CY2015Q4I"}]}},"AccruedProfessionalFeesCurrent":{"label":"Accrued Professional Fees, Current","description":"Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).","units":{"USD":[{"end":"2011-12-31","val":244000,"accn":"0001193125-13-121356","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-22","frame":"CY2011Q4I"},{"end":"2012-12-31","val":75000,"accn":"0001193125-13-121356","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-22"},{"end":"2012-12-31","val":75000,"accn":"0001193125-14-119886","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-28","frame":"CY2012Q4I"},{"end":"2013-12-31","val":120000,"accn":"0001193125-14-119886","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-28"},{"end":"2013-12-31","val":120000,"accn":"0001193125-15-100060","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-20","frame":"CY2013Q4I"},{"end":"2014-12-31","val":157000,"accn":"0001193125-15-100060","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-20"},{"end":"2014-12-31","val":157000,"accn":"0001564590-16-015102","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-21","frame":"CY2014Q4I"},{"end":"2015-12-31","val":232000,"accn":"0001564590-16-015102","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-21","frame":"CY2015Q4I"}]}},"AccruedSalariesCurrent":{"label":"Accrued Salaries, Current","description":"Carrying value as of the balance sheet date of the obligations incurred through that date and payable for employees' services provided. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).","units":{"USD":[{"end":"2011-12-31","val":580000,"accn":"0001193125-13-121356","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-22","frame":"CY2011Q4I"},{"end":"2012-12-31","val":691000,"accn":"0001193125-13-121356","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-22"},{"end":"2012-12-31","val":691000,"accn":"0001193125-14-119886","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-28","frame":"CY2012Q4I"},{"end":"2013-12-31","val":621000,"accn":"0001193125-14-119886","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-28"},{"end":"2013-12-31","val":621000,"accn":"0001193125-15-100060","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-20","frame":"CY2013Q4I"},{"end":"2014-12-31","val":688000,"accn":"0001193125-15-100060","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-20"},{"end":"2014-12-31","val":688000,"accn":"0001564590-16-015102","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-21","frame":"CY2014Q4I"},{"end":"2015-12-31","val":722000,"accn":"0001564590-16-015102","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-21","frame":"CY2015Q4I"}]}},"AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment":{"label":"Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment","description":"Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.","units":{"USD":[{"end":"2011-12-31","val":53404000,"accn":"0001193125-13-121356","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-22","frame":"CY2011Q4I"},{"end":"2012-12-31","val":56245000,"accn":"0001193125-13-121356","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-22"},{"end":"2012-12-31","val":56245000,"accn":"0001193125-14-119886","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-28","frame":"CY2012Q4I"},{"end":"2013-12-31","val":58839000,"accn":"0001193125-14-119886","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-28"},{"end":"2013-12-31","val":58839000,"accn":"0001193125-15-100060","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-20","frame":"CY2013Q4I"},{"end":"2014-12-31","val":60316000,"accn":"0001193125-15-100060","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-20"},{"end":"2014-12-31","val":60316000,"accn":"0001564590-16-015102","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-21","frame":"CY2014Q4I"},{"end":"2015-12-31","val":62843000,"accn":"0001564590-16-015102","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-21","frame":"CY2015Q4I"}]}},"AdditionalPaidInCapital":{"label":"Additional Paid in Capital","description":"Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. 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For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred 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