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Exit Activity Costs And Asset Impairments (Summary Of Exit Activity Costs And Asset Impairments) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Restructuring Cost and Reserve [Line Items]      
Total exit activity costs and asset impairments $ 4,497 $ 7,085 $ 2,585
Cost Of Sales [Member]
     
Restructuring Cost and Reserve [Line Items]      
Total exit activity costs and asset impairments 3,916 6,361 1,705
Selling, General, And Administrative Expense [Member]
     
Restructuring Cost and Reserve [Line Items]      
Total exit activity costs and asset impairments $ 581 $ 724 $ 880