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7. Stock Based Compensation (Tables)
3 Months Ended
Mar. 31, 2021
Share-based Payment Arrangement, Noncash Expense [Abstract]  
Restricted stock outstanding
    Shares     Weighted average grant date price  
Non-vested, December 31, 2020     283,456     $ 7.18  
Granted     9,366       10.03  
Vested     (6,805 )     10.03  
Non-vested, March 31, 2021     286,017       7.22  
Stock options outstanding
    Number of shares underlying options     Weighted average exercise price per share     Weighted average grant date fair value  
Outstanding, December 31, 2020     17,082     $ 6.10     $ 3.36  
Granted     -       -       -  
Outstanding, March 31, 2021     17,082       6.10       3.36  
Nonvested stock options outstanding
    Number of shares underlying options     Weighted average exercise price per share     Weighted average grant date fair value  
Non-vested, December 31, 2020     2,188     $ 5.50     $ 3.05  
Vested     -       -       -  
Non-vested, March 31, 2021     2,188       5.50       3.05  
Intrinsic value
    Number of shares underlying options      Weighted average exercise price per share      Weighted average remaining contractual life (years)      Aggregate intrinsic value  
Outstanding     17,082     $ 6.10       5.43     $ 202,582  
Exercisable     14,894       6.18       5.16       164,839