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, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Restructuring Reserve [Roll Forward]
Beginning balance			$ 3,744	$ 603
Exit activity costs recognized	$ 761	$ 963	6,706	2,696
Cash payments			(9,207)	(2,182)
Ending balance	$ 1,243	$ 1,117	$ 1,243	$ 1,117