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EARNINGS PER SHARE
 6 Months Ended
Jun. 30, 2021
EARNINGS PER SHARE [Abstract]  
EARNINGS PER SHARE
10.  EARNINGS PER SHARE

The factors used in the earnings per share computation follow:

  
Three Months Ended
June 30,
    
Six Months Ended
June 30,
  
   
2021
    
2020
    
2021
    
2020
  
Net income
  
$
13,650
    
$
5,615
    
$
28,810
    
$
12,698
  
                                 
Weighted average common shares outstanding - basic
    
18,039,553
      
18,061,705
      
18,054,288
      
18,052,405
  
Effect of dilutive securities:
                                
Stock-based compensation awards
    
513,497
      
162,925
      
484,881
      
290,871
  
Weighted average common shares outstanding - diluted
    
18,553,050
      
18,224,630
      
18,539,169
      
18,343,276
  
                                 
Basic earnings per share
  
$
0.76
    
$
0.31
    
$
1.60
    
$
0.70
  
Diluted earnings per share
  
$
0.74
    
$
0.31
    
$
1.55
    
$
0.69