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Loan and Lease Finance Receivables and Allowance for Credit Losses (Details 1) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Non-covered loans held for sale activity [Member]
   
Schedule of activity of loans held for sale    
Balance, beginning of period $ 348 $ 2,954
Originations of mortgage loans 5,739 11,508
Sales of mortgage loans (5,457) (10,957)
Transfer of mortgage loans to held for investment      
Sales of other loans      
Transfers of other loans to held for sale      
Write-down of loans held for sale      
Balance, end of period 630 3,505
Covered loans held for sale activity [Member]
   
Schedule of activity of loans held for sale    
Balance, beginning of period 5,664  
Originations of mortgage loans      
Sales of mortgage loans      
Transfer of mortgage loans to held for investment      
Sales of other loans      
Transfers of other loans to held for sale     
Write-down of loans held for sale (1,219)   
Payment on other loans (674)  
Balance, end of period $ 3,771