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Earnings Per Share
 9 Months Ended
Sep. 30, 2021
Earnings Per Share [Abstract]  
Earnings Per Share
6. Earnings Per Share

Basic earnings per share is calculated by dividing net income by the weighted average shares outstanding. Diluted earnings per share is calculated using the treasury stock method by dividing net income by the total weighted average shares of common stock outstanding and restricted stock awards.  The computations of basic and diluted net income per share were as follows (in thousands, except per share amounts):

  
Three Months Ended September 30,
    
Nine Months Ended September 30,
  
   
2021
    
2020
    
2021
    
2020
  
Basic:
                        
Net income
  
$
29,161
    
$
16,435
    
$
62,212
    
$
38,970
  
Weighted average shares outstanding
    
26,222
      
26,531
      
26,310
      
26,615
  
Basic net income per share
  
$
1.11
    
$
0.62
    
$
2.36
    
$
1.46
  
                                 
Diluted:
                                
Net income
  
$
29,161
    
$
16,435
    
$
62,212
    
$
38,970
  
                                 
Weighted average shares outstanding
    
26,222
      
26,531
      
26,310
      
26,615
  
Restricted stock awards
    
610
      
82
      
553
      
64
  
Total
    
26,832
      
26,613
      
26,863
      
26,679
  
                                 
Diluted net income per share
  
$
1.09
    
$
0.62
    
$
2.32
    
$
1.46