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Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Income Tax Contingency [Line Items]          
Effective tax rate (benefit) expense     50.10% (74.40%)  
Estimated annual effective tax benefit rate     25.30% 19.70%  
Discrete tax expense     $ 3,100    
Discrete net benefits $ 178 $ 21,143 (3,007) $ 25,001  
Income taxes paid, including foreign withholding taxes     16,483 24,459  
Taxes payable $ 193   193   $ 1,508
Share-based Payment Arrangement          
Income Tax Contingency [Line Items]          
Discrete net benefits       18,400  
Foreign Country          
Income Tax Contingency [Line Items]          
Income taxes paid, including foreign withholding taxes     $ 11,500 $ 16,500