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Income Taxes (Reconciliation of the Beginning and Ending Amount of Unrecognized Tax Benefits) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]      
Unrecognized tax benefits balance at January 1st $ 3,790 $ 4,509 $ 4,183
Increase in gross amounts of tax positions related to prior years 4,874 2,008 480
Decrease in gross amounts of tax positions related to prior years (2,239) (358) (50)
Increase in gross amounts of tax positions related to current years
Decrease due to settlements with tax authorities (1,626) (381)
Decrease due to lapse in statute of limitations (626) (479) (29)
Currency translation decrease   (264)  
Currency translation increase 35   306
Unrecognized tax benefits balance at December 31 $ 5,834 $ 3,790 $ 4,509