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8. Stock Based Compensation (Details 3) - USD ($)
9 Months Ended
Sep. 30, 2020
Dec. 31, 2019
Share-based Payment Arrangement, Noncash Expense [Abstract]    
Number of options, outstanding 17,082 29,165
Weighted average exercise price per share, outstanding $ 6.10 $ 7.20
Weighted average remaining contractual life (years), outstanding 5 years 11 months 1 day  
Aggregate intrinsic value, outstanding $ 39,703  
Number of options, exercisable 14,894  
Weighted average exercise price per share, exercisable $ 6.18  
Weighted average remaining contractual life (years), exercisable 5 years 7 months 28 days  
Aggregate intrinsic value, exercisable $ 23,053