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Income Taxes (Summary Of Uncertain Tax Position) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Income Taxes [Abstract]    
Balance as of January 1 $ (112,311) $ (9,041)
Increases related to prior years' tax positions (56) (104,721)
Increases related to current year tax positions (624) (692)
Settlements with taxing authorities   424
Expiration of the statute of limitations 1,978 1,719
Balance at December 31 $ (111,013) $ (112,311)