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Stock Options (Details) - Employee Stock Option [Member]
 9 Months Ended
Sep. 30, 2019
USD ($)
$ / shares
shares
Number of options  
Outstanding Balance | shares 620,900
Granted | shares 1,334,851
Forfeited | shares (174,933)
Expired | shares (25,000)
Outstanding Balance | shares 1,755,818
Vested and exercisable | shares 803,126
Weighted average exercise price  
Outstanding Balance | $ / shares $ 3.75
Granted | $ / shares 0.85
Forfeited | $ / shares 1.36
Expired | $ / shares 6.20
Outstanding Balance | $ / shares 1.75
Vested and exercisable | $ / shares $ 2.64
Weighted average contractual term (years)  
Outstanding at September 30, 2019 8 years 9 months 29 days
Vested and exercisable 8 years 2 months 5 days
Aggregate intrinsic value  
Forfeited | $ $ 100,087
Outstanding at September 30, 2019 | $ 952,494
Vested and exercisable at September 30, 2019 | $
Vested and exercisable and expected to vest thereafter | $ $ 334,420