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Long Term Subordinated Notes (Tables)
3 Months Ended
Mar. 31, 2016
Long Term Subordinated Notes [Abstract]  
Schedule Of Outstanding Fixed To Floating Rate Long Term Subordinated Notes
         
Maturity Date
 
March 31, 2016
   
December 31, 2015
 
        
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
 
$
238,369
   
$
203,789
   
$
238,368
   
$
208,978
 
Schedule Of Interest Expense Incurred In Connection With Long Term Subordinated Notes
   
Three Months Ended
 
   
March 31,
 
(Dollars in thousands)
 
2016
   
2015
 
Interest expense incurred
 
$
3,937
   
$
3,937