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Mortgage Banking (Tables)
9 Months Ended
Sep. 30, 2012
Mortgage Banking [Abstract]  
Schedule of the Activity in Mortgage Servicing Rights
The activity in MSR is detailed in the table below ($ in thousands):

   
Nine Months Ended September 30,
 
   
2012
  
2011
 
Balance at beginning of period
 $43,274  $51,151 
Origination of servicing assets
  17,074   9,581 
Change in fair value:
        
Due to market changes
  (8,960)  (12,288)
Due to runoff
  (7,177)  (4,785)
Balance at end of period
 $44,211  $43,659