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016-02-26"},{"end":"2015-12-31","val":50683717,"accn":"0001095291-16-000130","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-10"},{"end":"2015-12-31","val":50683717,"accn":"0001095291-16-000158","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-08"},{"end":"2015-12-31","val":50683717,"accn":"0001095291-16-000164","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-08"},{"end":"2015-12-31","val":50683717,"accn":"0001095291-17-000013","fy":2016,"fp":"FY","form":"10-K","filed":"2017-02-28","frame":"CY2015Q4I"},{"end":"2016-03-31","val":50830386,"accn":"0001095291-16-000130","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-10","frame":"CY2016Q1I"},{"end":"2016-06-30","val":50634010,"accn":"0001095291-16-000158","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-08","frame":"CY2016Q2I"},{"end":"2016-09-30","val":50835511,"accn":"0001095291-16-000164","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-08","frame":"CY2016Q3I"},{"end":"2016-12-31","val":50278137,"accn":"0001095291-17-000013","fy":2016,"fp":"FY","form":"10-K","filed":"2017-02-28"},{"end":"2016-12-31","val":50683717,"accn":"0001095291-17-000024","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-05"},{"end":"2016-12-31","val":50278137,"accn":"0001095291-17-000038","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-04"},{"end":"2016-12-31","val":50278137,"accn":"0001095291-17-000050","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-08"},{"end":"2016-12-31","val":50278137,"accn":"0001095291-18-000022","fy":2017,"fp":"FY","form":"10-K","filed":"2018-02-23","frame":"CY2016Q4I"},{"end":"2017-03-31","val":51112867,"accn":"0001095291-17-000024","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-05","frame":"CY2017Q1I"},{"end":"2017-06-30","val":51435214,"accn":"0001095291-17-000038","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-04","frame":"CY2017Q2I"},{"end":"2017-09-30","val":48657493,"accn":"0001095291-17-000050","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-08","frame":"CY2017Q3I"},{"end":"2017-12-31","val":48845352,"accn":"0001095291-18-000022","fy":2017,"fp":"FY","form":"10-K","filed":"2018-02-23"},{"end":"2017-12-31","val":48845352,"accn":"0001095291-18-000047","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-05-04"},{"end":"2017-12-31","val":48845352,"accn":"0001095291-18-000091","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-07-31","frame":"CY2017Q4I"},{"end":"2018-03-31","val":49437051,"accn":"0001095291-18-000047","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-05-04","frame":"CY2018Q1I"}]}},"CommonStockSharesOutstanding":{"label":"Common 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Receivable, Credit Loss Expense (Reversal)","description":"Amount of expense (reversal of expense) for expected credit loss on accounts receivable.","units":{"USD":[{"start":"2010-01-01","end":"2010-12-31","val":1596000,"accn":"0001144204-13-013316","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-06","frame":"CY2010"},{"start":"2011-01-01","end":"2011-12-31","val":3812000,"accn":"0001144204-13-013316","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-06","frame":"CY2011"},{"start":"2012-01-01","end":"2012-12-31","val":7875000,"accn":"0001144204-13-013316","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-06","frame":"CY2012"}]}},"RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty":{"label":"Related Party Transaction, Expenses from Transactions with Related Party","description":"Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related 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