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Income Taxes (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Income Tax Disclosure [Abstract]        
Provision for income taxes $ 1,938 $ 2,539 $ 3,782 $ 4,493
Effective income tax rate (as a percentage) 8.80% 41.90% 8.50% 17.90%
Unremitted earnings     $ 100,268  
Unrecognized deferred tax liability $ 15,100   $ 15,100