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7. Stock Based Compensation (Tables)
6 Months Ended
Jun. 30, 2020
Share-based Payment Arrangement, Noncash Expense [Abstract]  
Restricted stock outstanding
    Shares     Weighted average grant date price  
Non-vested, December 31, 2019     255,634     $ 7.18  
Granted     57,087       6.48  
Vested     (27,705 )     6.48  
Non-vested, June 30, 2020     285,016       7.10  
Stock options outstanding
    Number of shares underlying options     Weighted average exercise price per share     Weighted average grant date fair value  
Outstanding, December 31, 2019     29,165     $ 7.20     $ 3.76  
Granted     -       -       -  
Forfeited     -       -       -  
Exercised     -       -       -  
Outstanding, June 30, 2020     29,165       7.20       3.76  
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, 2019     5,416     $ 5.48     $ 3.01  
Granted     -       -       -  
Forfeited     -       -       -  
Vested     (2,187 )     5.50       3.05  
Non-vested, June 30, 2020     3,229       5.47       2.98  
Intrinsic value
    Number of shares underlying options      Weighted average exercise price per share      Weighted average remaining contractual life (years)     Aggregate intrinsic value  
Outstanding     29,165     $ 7.20       4.22     $ 26,984  
Exercisable     25,936       7.41       3.78       6,997