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Earnings per share (EPS) (Tables)
 12 Months Ended
Dec. 31, 2021
Earnings Per Share [Abstract]  
Schedule of Reconciliation of Weighted Average Shares Used in the Diluted EPS The following is a reconciliation of the weighted average shares used in the diluted EPS computations:

 

 

Year Ended December 31,

 

 

 

2021

 

 

2020

 

 

2019

 

Weighted average common shares-basic

 

 

19,690,593

 

 

 

19,267,920

 

 

 

18,903,289

 

Effect of diluted securities:

 

 

 

 

 

 

 

 

 

 

 

 

Unexercised stock options and employee stock purchase plan

 

 

—

 

 

 

51,951

 

 

 

—

 

Unvested time-based restricted stock units

 

 

—

 

 

 

71,847

 

 

 

—

 

Weighted average common shares-diluted

 

 

19,690,593

 

 

 

19,391,718

 

 

 

18,903,289