Plants Shutdowns, Asset Impairments, Restructurings And Other (Schedule Of Accrued Expenses Associated With Asset Impairments And Exit And Disposal Activities) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013
Restructuring Cost and Reserve [Line Items]
Balance at December 31, 2012	$ 881
Charges	638
Cash spent	(822)
Balance at June 30, 2013	697
Severance [Member]
Restructuring Cost and Reserve [Line Items]
Balance at December 31, 2012	296
Charges	117
Cash spent	(328)
Balance at June 30, 2013	85
Other [Member]
Restructuring Cost and Reserve [Line Items]
Balance at December 31, 2012	585	[1]
Charges	521	[1]
Cash spent	(494)	[1]
Balance at June 30, 2013	$ 612	[1]

[1] Other includes other shutdown-related costs associated with the shutdown of our aluminum extrusions manaufacturing facility in Kentland, Indiana.