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Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Income Taxes [Abstract]          
Provision for income taxes $ 24,527 $ 20,638 $ 47,330 $ 45,296  
Effective tax rate 34.60% 28.80% 34.60% 34.40%  
Net deferred tax assets $ 14,800   $ 14,800   $ 19,100
Undistributed earnings of non-U.S. subsidiaries         60,000
Incremental taxes if undistributed earnings on non-U.S. subsidiaries were repatriated         $ 6,000
Minimum [Member]          
Income Taxes [Abstract]          
Decrease in unrecognized tax benefits within the next 12 months that is reasonably possible (500)   $ (500)    
Maximum [Member]          
Income Taxes [Abstract]          
Statute of limitations related to income tax examinations     10 years    
Income Taxes [Abstract]          
Decrease in unrecognized tax benefits within the next 12 months that is reasonably possible $ (1,500)   $ (1,500)