Income Taxes (Reconciliation of the Beginning and Ending Amount of Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Unrecognized tax benefits that would impact effective tax rate	$ 1,300
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits balance at January 1st	5,834	$ 3,790	$ 4,509
Increase in gross amounts of tax positions related to prior years	540	4,874	2,008
Decrease in gross amounts of tax positions related to prior years	(637)	(2,239)	(358)
Increase in gross amounts of tax positions related to current years	0	0	0
Decrease due to settlements with tax authorities	0	0	(1,626)
Decrease due to lapse in statute of limitations	(300)	(626)	(479)
Currency translation	54	35
Currency translation			(264)
Unrecognized tax benefits balance at December 31	$ 5,491	$ 5,834	$ 3,790