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Earnings Per Share (Tables)
3 Months Ended
Mar. 31, 2015
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,
 
2015
  
2014
 
(in thousands, except per share data)
 
  
 
Basic EPS:
 
  
 
Weighted average common shares outstanding
  
44,153
   
43,762
 
Net income available to common shareholders
  
18,166
   
18,009
 
Basic EPS
 
$
0.41
  
$
0.41
 
         
Diluted EPS:
        
Weighted average common shares outstanding
  
44,153
   
43,762
 
Dilutive effect of common stock options and restricted stock
  
489
   
505
 
Weighted average common shares and common share equivalents
  
44,642
   
44,267
 
Net income available to common shareholders
  
18,166
   
18,009
 
Diluted EPS
 
$
0.41
  
$
0.41