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Restructuring Activities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Restructuring Activities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Restructuring Reserve [Roll Forward]
Restructuring and adjustments	$ 1,383	$ 24,045	$ 3,585	$ 24,045
Qh Program [Member]
Restructuring Reserve [Roll Forward]
Accrued restructuring, beginning balance			18,043
Restructuring and adjustments			3,585
Cash payments			(12,772)
Currency translation adjustments			37
Accrued restructuring, ending balance	$ 8,893		$ 8,893