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Mortgage Banking (Tables)
3 Months Ended
Mar. 31, 2012
Mortgage Banking [Abstract]  
Schedule of the Activity in Mortgage Servicing Rights
The activity in MSR is detailed in the table below ($ in thousands):
 
   
Three Months Ended March 31,
 
   
2012
  
2011
 
Balance at beginning of period
 $43,274  $51,151 
Origination of servicing assets
  4,477   3,480 
Change in fair value:
        
Due to market changes
  248   257 
Due to runoff
  (2,106)  (1,290)
Balance at end of period
 $45,893  $53,598