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Earnings Per Share (Tables)
3 Months Ended
Mar. 31, 2016
Earnings Per Share [Abstract]  
Reconciliation of Basic and Diluted Earnings per Share
The following is a reconciliation of basic and diluted earnings per share for the periods presented in the consolidated statements of income.
 
Three months ended March 31,
 
2016
  
2015
 
(in thousands, except per share data)
      
Basic EPS:
      
Weighted average common shares outstanding
  
43,342
   
44,153
 
Net income available to common stockholders
  
18,891
   
18,166
 
Basic EPS
 
$
0.44
  
$
0.41
 
         
Diluted EPS:
        
Weighted average common shares outstanding
  
43,342
   
44,153
 
Dilutive effect of common stock options and restricted stock
  
365
   
489
 
Weighted average common shares and common share equivalents
  
43,707
   
44,642
 
Net income available to common stockholders
  
18,891
   
18,166
 
Diluted EPS
 
$
0.43
  
$
0.41