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Loans (Unpaid Principal Balance And Carrying Value Of Acquired Loans) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
Bank Acquisitions [Member]
   
Loans [Line Items]    
Unpaid Principal Balance $ 849,194 $ 866,874
Carrying Value, Acquired loans 622,859 596,946
Life Insurance Premium Finance Acquisition [Member]
   
Loans [Line Items]    
Unpaid Principal Balance 590,152 632,878
Carrying Value, Acquired loans $ 560,404 $ 598,463