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Earnings Per Share
 12 Months Ended
Dec. 31, 2021
Earnings Per Share [Abstract]  
Earnings Per Share
23.  Earnings Per Share


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

Year Ended December 31
(in thousands except per share data)
  
2021
    
2020
    
2019
  
Numerator:
                  
Net income
  
$
87,939
    
$
59,504
    
$
64,540
  
                         
Denominator:
                        
Basic earnings per share:
                        
Weighted average shares
    
17,786
      
17,748
      
17,724
  
Diluted earnings per share:
                        
Dilutive effect of equity grants
    
18
      
8
      
16
  
Adjusted weighted average shares
    
17,804
      
17,756
      
17,740
  
                         
Earnings per share:
                        
Basic earnings per share
  
$
4.94
    
$
3.35
    
$
3.64
  
Diluted earnings per share
    
4.94
      
3.35
      
3.64
  


There were no options to purchase common shares that were excluded from the diluted calculations above for the years ended December 31, 2021, 2020, and 2019.  In addition to in-the-money stock options, unvested restricted stock grants were also used in the calculation of diluted earnings per share based on the treasury method.