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Long Term Subordinated Notes (Tables)
9 Months Ended
Sep. 30, 2012
Long Term Subordinated Notes [Abstract]  
Schedule Of Outstanding Fixed To Floating Rate Long Term Subordinated Notes
             
Maturity Date
 
September 30, 2012
 
December 31, 2011
     
Original
             
Consolidated Balance
         
Consolidated Balance
       
(Dollars in thousands)
Date Issued
 
Principal Amount
     
Scheduled
 
Final
 
Sheet Amount
   
Market Value
   
Sheet Amount
   
Market Value
 
6.6% Long term subordinated notes
04/26/2007
  $ 400,000      
05/15/2037
 
05/01/2067
  $ 238,356     $ 244,522     $ 238,354     $ 210,195  
Schedule Of Interest Expense Incurred In Connection With Long Term Subordinated Notes
   
Three Months Ended
   
Nine Months Ended
 
   
September 30,
   
September 30,
 
(Dollars in thousands)
 
2012
   
2011
   
2012
   
2011
 
Interest expense incurred
  $ 3,937     $ 3,937     $ 11,811     $ 11,811