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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
Income Tax Disclosure [Abstract]        
Income before income tax $ 96,210 $ 44,351 $ 255,180 $ 97,713
Provision for income taxes $ (25,647) $ (14,912) $ (64,646) $ (37,028)
Effective tax rate (as a percent) 26.70% 33.60% 25.30% 37.90%
Unrecognized tax benefits, period decrease     $ 1,800  
Unrecognized tax benefits approximate amount of estimated reduction within the next twelve months $ 6,000   $ 6,000