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Earnings per Share (Tables)
12 Months Ended
Dec. 31, 2019
Earnings per Share [Abstract]  
Computations of Basic and Diluted Net Income 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):

  
Years Ending December 31,
 
  
2019
  
2018
 
Basic:
      
Net income
 
$
81,917
  
$
117,196
 
Weighted average shares outstanding
  
27,407
   
28,744
 
Basic net income per share
 
$
2.99
  
$
4.08
 
         
Diluted:
        
Net income
 
$
81,917
  
$
117,196
 
         
Weighted average share outstanding
  
27,407
   
28,744
 
Restricted stock awards
  
72
   
33
 
Total
  
27,479
   
28,777
 
         
Diluted net income per share
 
$
2.98
  
$
4.07