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Restructuring (Schedule Of Restructuring Charges) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Restructuring and Related Activities [Abstract]      
Employee severance benefits $ 4,481 $ 10,841 $ 24,850
Lease exit costs 5,702 5,923 27,356
Other 2,057 4,089 3,929
Restructuring Charges $ 12,240 $ 20,853 $ 56,135