Accrued Expenses (Schedule Of Reconciliation Of Beginning And Ending Balances Of Accrued Expenses Associated With Asset Impairments And Costs Associated With Exit And Disposal Activities) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Restructuring Reserve [Roll Forward]
Beginning balance		$ 447	$ 687	$ 881
Charges		3,850	3,026	1,412
Cash spend		(2,027)	(3,039)	(1,434)
Charges against assets		(403)	(227)	(172)
Ending balance		1,867	447	687
Severance
Restructuring Reserve [Roll Forward]
Beginning balance		246	331	296
Charges		2,568	2,668	671
Cash spend		(1,352)	(2,753)	(636)
Ending balance		1,462	246	331
Asset Impairments
Restructuring Reserve [Roll Forward]
Beginning balance		0	0	0
Charges		403	227	172
Charges against assets		(403)	(227)	(172)
Ending balance		0	0	0
Other
Restructuring Reserve [Roll Forward]
Beginning balance	[1]	201	356	585
Charges	[1]	879	131	569
Cash spend	[1]	(675)	(286)	(798)
Ending balance	[1]	$ 405	$ 201	$ 356

[1] Other includes other shutdown-related costs associated with the consolidation of domestic PE Films manufacturing facilities and the shutdown of the Company’s aluminum extrusions manufacturing facility in Kentland, Indiana.