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Earnings Per Common Share
 12 Months Ended
Dec. 31, 2013
Earnings Per Common Share  
Earnings Per Common Share

Note 14—Earnings Per Common Share

        The following table sets forth the computation of basic and diluted earnings per common share:

 
   Years Ended December 31,  
(Dollars in thousands)
   2013   2012   2011  

Numerator:

                    

Net income available to common shareholders—numerator for basic and diluted earnings per share

   $ 47,865   $ 30,032   $ 22,595  
               
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Denominator:

                    

Denominator for basic earnings per share—weighted-average shares outstanding

     19,866     14,698     13,677  

Effect of dilutive securities:

    
 		    
 		    
 		  

Employee stock options and restricted stock

     211     98     74  
               
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Dilutive potential shares:

                    

Denominator for diluted earnings per share—adjusted weighted-average shares

     20,077     14,796     13,751  
               
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
               

Basic earnings per common share

   $ 2.41   $ 2.04   $ 1.65  
               
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
               

Diluted earnings per common share

   $ 2.38   $ 2.03   $ 1.63  
               
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
               

        The calculation of diluted earnings per common share excludes outstanding stock options for which the results would have been antidilutive under the treasury stock method as follows:

 
   Years Ended December 31,  
(Dollars in thousands)
   2013   2012   2011  

Number of shares

     21,361     138,729     256,664  

Range of exercise prices

   $ 41.45 to $41.45   $ 31.10 to $40.99   $ 26.01 to $40.99