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Common Stock and Earnings Per Share (Tables)
12 Months Ended
Dec. 31, 2021
Common Stock and Earnings Per Share [Abstract]  
Shares Used in Computing Basic and Diluted Earnings per Share
The following table summarizes the shares used in computing basic and diluted net income per share:

 
2021
   
2020
 
Weighted average common shares, basic
   
13,076,263
     
13,033,681
 
Effect of dilutive securities:
               
Employee stock-based compensation
   
1,027
     
839
 
Weighted average common shares, diluted
   
13,077,290
     
13,034,520