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Share-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2011
Share-Based Compensation  
Share-Based Compensation Arrangement Expenses Recognized
   
Three Months Ended
June 30,
   
Six Months Ended
June 30,
 
(Dollars in thousands)
 
2011
   
2010
   
2011
   
2010
 
                         
Salaries, wages and employee benefits
  $ 4,406     $ 3,320     $ 9,169     $ 6,895  
Deferred income tax benefit
    (1,732 )     (1,286 )     (3,576 )     (2,657 )
     Net share-based compensation expense
  $ 2,674     $ 2,034     $ 5,593     $ 4,238