Annual report pursuant to Section 13 and 15(d)

Income Taxes (Reconciliation Of Unrecognized Tax Benefits) (Details)

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Income Taxes (Reconciliation Of Unrecognized Tax Benefits) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Income Taxes [Abstract]      
Balance at beginning of period $ 18,694 $ 20,183 $ 21,839
Increases related to prior year tax positions 43 893 1,346
Decreases related to prior year tax positions (141) (27) (634)
Increases related to current year tax positions 1,388 1,278 1,598
Settlements (649)   (1,194)
Expiration of statute of limitations (5,019) (3,633) (2,772)
Balance at end of period $ 14,316 $ 18,694 $ 20,183