Exit Activity Costs and Asset Impairments (Reconciles Of Liability For Exit Activity Costs Relating To Facility Consolidation Efforts) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restructuring Reserve [Roll Forward]
Balance as of	$ 603	$ 575
Exit activity costs recognized	6,217	1,418	$ 2,126
Cash payments	(3,076)	(1,390)
Balance as of	$ 3,744	$ 603	$ 575