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Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet 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Leases, Future Minimum Payments, Interest Included in Payments","description":"Amount necessary to reduce net minimum lease payments to present value for capital 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Leases, Future Minimum Payments, Present Value of Net Minimum Payments","description":"Present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes.","units":{"USD":[{"end":"2011-12-31","val":578000,"accn":"0001047469-12-001634","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-28","frame":"CY2011Q4I"},{"end":"2012-03-31","val":499000,"accn":"0001104659-12-033209","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-04","frame":"CY2012Q1I"},{"end":"2012-06-30","val":420000,"accn":"0001104659-12-054182","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-03","frame":"CY2012Q2I"},{"end":"2012-09-30","val":4367000,"accn":"0001104659-12-073702","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-02","frame":"CY2012Q3I"},{"end":"2012-12-31","val":4088000,"accn":"0001047469-13-001628","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-25","frame":"CY2012Q4I"},{"end":"2013-03-31","val":3809000,"accn":"0001104659-13-037146","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-03","frame":"CY2013Q1I"},{"end":"2013-06-30","val":3393000,"accn":"0001104659-13-059440","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-02","frame":"CY2013Q2I"},{"end":"2013-09-30","val":3128000,"accn":"0001104659-13-080073","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-01","frame":"CY2013Q3I"},{"end":"2013-12-31","val":2845000,"accn":"0001047469-14-001582","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-28"},{"end":"2013-12-31","val":2977000,"accn":"0001104659-15-005134","fy":2013,"fp":"FY","form":"10-K/A","filed":"2015-01-29","frame":"CY2013Q4I"},{"end":"2014-03-31","val":2561000,"accn":"0001104659-14-034129","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-02","frame":"CY2014Q1I"},{"end":"2014-06-30","val":2284000,"accn":"0001104659-14-059387","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-11","frame":"CY2014Q2I"},{"end":"2014-09-30","val":1869000,"accn":"0001104659-14-079697","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-12","frame":"CY2014Q3I"},{"end":"2014-12-31","val":1596000,"accn":"0001047469-15-001439","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02","frame":"CY2014Q4I"},{"end":"2015-03-31","val":1315000,"accn":"0001104659-15-032855","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-01","frame":"CY2015Q1I"},{"end":"2015-06-30","val":1040000,"accn":"0001104659-15-055244","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-07-31","frame":"CY2015Q2I"},{"end":"2015-09-30","val":765000,"accn":"0001104659-15-074524","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-10-30","frame":"CY2015Q3I"},{"end":"2015-12-31","val":491000,"accn":"0001356104-16-000011","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-26","frame":"CY2015Q4I"},{"end":"2016-03-31","val":218000,"accn":"0001356104-16-000027","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-04-29","frame":"CY2016Q1I"}]}},"CapitalLeasesFutureMinimumPaymentsRemainderOfFiscalYear":{"label":"Capital 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Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.","units":{"USD":[{"end":"2012-09-30","val":279000,"accn":"0001104659-12-073702","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-02","frame":"CY2012Q3I"},{"end":"2015-03-31","val":829000,"accn":"0001104659-15-032855","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-01","frame":"CY2015Q1I"},{"end":"2015-06-30","val":549000,"accn":"0001104659-15-055244","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-07-31","frame":"CY2015Q2I"},{"end":"2015-09-30","val":280000,"accn":"0001104659-15-074524","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-10-30","frame":"CY2015Q3I"}]}},"CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation":{"label":"Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation","description":"The total charge for the use of long-lived depreciable assets subject to a lease meeting the criteria for capitalization.","units":{"USD":[{"end":"2010-12-31","val":2700000,"accn":"0001047469-12-001634","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-28","frame":"CY2010Q4I"},{"end":"2011-12-31","val":100000,"accn":"0001047469-12-001634","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-28"},{"end":"2011-12-31","val":100000,"accn":"0001047469-13-001628","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-25","frame":"CY2011Q4I"},{"end":"2012-12-31","val":300000,"accn":"0001047469-13-001628","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-25"},{"end":"2012-12-31","val":600000,"accn":"0001047469-14-001582","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-28"},{"end":"2012-12-31","val":600000,"accn":"0001104659-15-005134","fy":2013,"fp":"FY","form":"10-K/A","filed":"2015-01-29","frame":"CY2012Q4I"},{"end":"2013-12-31","val":1200000,"accn":"0001047469-14-001582","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-28"},{"end":"2013-12-31","val":1200000,"accn":"0001104659-15-005134","fy":2013,"fp":"FY","form":"10-K/A","filed":"2015-01-29","frame":"CY2013Q4I"}]}},"CashAcquiredFromAcquisition":{"label":"Cash Acquired from Acquisition","description":"The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).","units":{"USD":[{"start":"2011-01-01","end":"2011-03-31","val":3961000,"accn":"0001104659-12-033209","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-04","frame":"CY2011Q1"},{"start":"2011-01-01","end":"2011-06-30","val":3961000,"accn":"0001104659-11-043701","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-04"},{"start":"2011-01-01","end":"2011-06-30","val":3961000,"accn":"0001104659-12-054182","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-03"},{"start":"2011-01-01","end":"2011-09-30","val":3961000,"accn":"0001104659-11-061174","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-04"},{"start":"2011-01-01","end":"2011-09-30","val":3961000,"accn":"0001104659-12-073702","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-02"},{"start":"2011-01-01","end":"2011-12-31","val":3961000,"accn":"0001047469-12-001634","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-28"},{"start":"2011-01-01","end":"2011-12-31","val":3961000,"accn":"0001047469-13-001628","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-25","frame":"CY2011"},{"start":"2012-01-01","end":"2012-06-30","val":3961000,"accn":"0001104659-12-054182","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-03"},{"start":"2013-01-01","end":"2013-12-31","val":2464000,"accn":"0001047469-15-001439","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":2464000,"accn":"0001047469-15-001439","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02","frame":"CY2014"}]}},"CashAndCashEquivalentsAtCarryingValue":{"label":"Cash and Cash Equivalents, at Carrying Value","description":"Amount of currency on hand as well as demand deposits with banks or financial institutions. 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It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as 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Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest 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The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). 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