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Borrowed Funds (Schedule Of Repayment Of Long-Term Borrowings For Securities Sold Under Agreements To Repurchase) (Details) (Long-Term Borrowings [Member], USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Long-Term Borrowings [Member]
   
Debt Instrument [Line Items]    
2015 $ 125,000  
2016 142,500  
Thereafter 320,000  
Total long-term borrowings for securities sold under agreements to repurchase $ 587,500 $ 655,000