Exit Activity Costs and Asset Impairments (Reconciles of Liability for Exit Activity Costs Relating to Facility Consolidation Efforts) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Restructuring Reserve [Roll Forward]
Beginning balance	$ 1,030	$ 2,083
Exit activity costs (recoveries), net	4,047	293
Cash payments	(1,464)	(1,365)
Ending balance	$ 3,613	$ 1,011