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Stock Options (Details) - Employee Stock Option [Member] - USD ($)
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Number of options    
Outstanding 2,004,318 620,900
Granted 691,046 1,334,851
Forfeited (65,829) (174,933)
Exercise (6,666)  
Expired   (25,000)
Outstanding 2,622,869 1,755,818
Vested and exercisable 1,676,871 803,126
Weighted average exercise price    
Outstanding $ 1.72 $ 3.75
Granted 2.52 0.85
Forfeited 0.91 1.36
Exercise 0.79  
Expired   6.20
Outstanding 1.95 1.75
Vested and exercisable $ 1.97 $ 2.64
Weighted average contractual term (years)    
Outstanding 7 years 8 months 23 days 8 years 9 months 29 days
Vested and exercisable 8 years 15 days 8 years 2 months 5 days
Aggregate intrinsic value    
Outstanding $ 2,542,361  
Forfeited 20,048 $ 100,087
Exercise 6,032  
Outstanding 1,209,562 952,494
Vested and exercisable $ 1,000,844 $ 334,420