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Income Taxes - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Dec. 31, 2014
Operating Loss Carryforwards [Line Items]          
Current income tax expense (benefit) $ (651) $ 0 $ 272 $ 0  
Effective tax rate     3.40%    
U.S. Federal, State and Local Tax Authorities [Member]          
Operating Loss Carryforwards [Line Items]          
Operating loss carry-forward         $ 75,300
Operating loss carry-forward available $ 23,800   $ 23,800