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Income Taxes - (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Income Taxes [Abstract]      
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest $ 9,607 $ 19,561  
Income Tax Expense (Benefit) $ 2,456 $ 5,622  
Effective Income Tax Rate 25.60% 28.70%  
Valuation Allowance, Amount $ 1,924   $ 1,924