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Income Taxes (Components Of Consolidated Income Tax Provision) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Income Taxes [Abstract]      
U.S., Current $ 41,452 $ 44,595 $ 52,704
State and local, Current 16,678 23,653 12,191
Total current provision for taxes 58,130 68,248 64,895
U.S., Deferred 29,895 (117,945) (11,745)
State and local, Deferred (2,548) (2,634) (2,074)
Total deferred provision for taxes 27,347 (120,579) (13,819)
Total provision (benefit) for taxes $ 85,477 $ (52,331) $ 51,076