Restructuring (Schedule of Restructuring Liability) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Restructuring Reserve [Roll Forward]
Payments	$ (900)
Termination Costs [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	10,177	$ 1,874
Restructuring charges accrued	7,251	20,541
Payments	(11,800)	(12,323)
Currency translation/other	(69)	85
Ending balance	$ 5,559	$ 10,177