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		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Restructuring and Related Activities [Abstract]
Exit activity costs (recoveries), net	$ 1,910	$ 761	$ 2,264	$ 6,706
Restructuring Reserve [Roll Forward]
Beginning balance			961	3,744
Cash payments			(1,608)	(9,207)
Ending balance	$ 1,617	$ 1,243	$ 1,617	$ 1,243