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Stock Options (Details) - Employee Stock Option [Member] - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Number of options    
Outstanding 2,004,318 620,900
Granted 860,465 1,694,851
Exercised (7,166) (82,667)
Forfeited (261,917) (203,766)
Expired   (25,000)
Outstanding 2,595,700 2,004,318
Weighted average exercise price    
Outstanding $ 1.72 $ 3.75
Granted 2.38 1.00
Exercise 0.79 0.84
Forfeited 1.90 1.71
Expired   6.20
Outstanding $ 1.92 $ 1.72
Weighted average contractual term (years)    
Outstanding 7 years 7 months 6 days  
Aggregate intrinsic value    
Outstanding $ 2,542,361  
Exercise 6,523 $ 67,911
Forfeited 134,070 104,868
Outstanding $ 2,491,026 $ 2,542,361