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Accumulated Other Comprehensive Loss (Schedule Of Accumulated Other Comprehensive Loss) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Accumulated Other Comprehensive Loss [Abstract]    
Retirement plan liabilities, net of tax $ (13,453) $ (9,600)
Foreign currency translation (2,148) (460)
Accumulated other comprehensive loss $ (15,601) $ (10,060)