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Earnings per Share ("EPS") (Tables)
12 Months Ended
Dec. 31, 2013
Earnings per Share ("EPS")  
Schedule of calculation of the basic EPS and the diluted EPS
  Net Income
(Numerator)
  Shares
(Denominator)
  Per Share
Amount
 
 
  (Dollars in Thousands,
Except Per Share Amounts)

 

December 31, 2013:

                   

Basic EPS

                   

Net income available to common shareholders

  $ 126,351     67,195,180   $ 1.88  

Potential dilutive common shares

   
   
119,679
       
                 

Diluted EPS

  $ 126,351     67,314,859   $ 1.88  
                 
                 

December 31, 2012:

                   

Basic EPS

                   

Net income available to common shareholders

  $ 93,473     67,236,681   $ 1.39  

Potential dilutive common shares

   
   
77,282
       
                 

Diluted EPS

  $ 93,473     67,313,963   $ 1.39  
                 
                 

December 31, 2011:

                   

Basic EPS

                   

Net income available to common shareholders

  $ 113,869     67,506,554   $ 1.69  

Potential dilutive common shares

   
   
62,914
       
                 

Diluted EPS

  $ 113,869     67,569,468   $ 1.69