Restructuring (Schedule of Restructuring Liability) (Details) - Employee Severance - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Restructuring Reserve [Roll Forward]
Beginning balance	$ 2,042	$ 5,570
Restructuring charges accrued	5,736	1,269
Payments	(5,668)	(5,084)
Currency translation/other	85	287
Ending balance	$ 2,195	$ 2,042