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Earnings per Share (Tables)
 6 Months Ended
Jun. 30, 2022
Earnings per Share [Abstract]  
Computation of Earnings per Share

The following table sets forth the computation of earnings per share.

   
Three months ended
June 30,
    
Six months ended
June 30,
  
   
2022
    
2021
    
2022
    
2021
  
Net income applicable to common stock
  
$
6,901,000
    
$
6,647,000
    
$
13,641,000
    
$
15,110,000
  
                                 
Basic earnings per share computation
                                
Weighted average common shares outstanding
    
3,973,402
      
3,983,274
      
3,969,621
      
3,984,970
  
Earnings per share - basic
  
$
1.74
    
$
1.67
    
$
3.43
    
$
3.79
  
                                 
Diluted earnings per share computation
                                
Weighted average common shares outstanding for basic earnings per share
    
3,973,402
      
3,983,274
      
3,969,621
      
3,984,970
  
Add: Dilutive effects of restricted stock
    
15
      
72
      
104
      
35
  
Weighted average common shares outstanding for dilutive earnings per share
    
3,973,417
      
3,983,346
      
3,969,725
      
3,985,005
  
Earnings per share - diluted
  
$
1.74
    
$
1.67
    
$
3.43
    
$
3.79