Stockholders' Equity - Schedule of Unvested Stock Option Activity (Details) - USD ($)	1 Months Ended	12 Months Ended
	Jul. 31, 2018	Dec. 31, 2018	Dec. 31, 2017
Number of options, granted	98,098
Employees [Member]
Number of options unvested, beginning of year		366,148	90,625
Number of options, granted		4,164,585	584,794
Number of options, vested		(1,225,074)	(309,271)
Number of options, forfeited
Number of options unvested, end of year		3,305,659	366,148
Weighted average exercise price unvested, beginning of year		$ 0.48	$ 1.72
Weighted average exercise price, granted		0.32	0.50
Weighted average exercise price, vested		0.36	0.88
Weighted average exercise price, forfeited
Weighted average exercise price unvested, end of year		$ 0.32	$ 0.48
Average remaining contractual term (years) unvested, beginning of year		9 years 7 months 13 days	9 years 3 months 29 days
Average remaining contractual term (years) unvested, end of year		9 years 3 months 22 days	9 years 7 months 13 days
Aggregate intrinsic value unvested, beginning of year
Aggregate intrinsic value, granted
Aggregate intrinsic value, vested
Aggregate intrinsic value, forfeited
Aggregate intrinsic value unvested, end of year
Non-Employees [Member]
Number of options unvested, beginning of year		464,965	26,389
Number of options, granted		1,699,920	606,772
Number of options, vested		(613,357)	(163,335)
Number of options, forfeited			(4,861)
Number of options unvested, end of year		1,551,528	464,965
Weighted average exercise price unvested, beginning of year		$ 0.36	$ 1.65
Weighted average exercise price, granted		0.31	0.42
Weighted average exercise price, vested		0.35	0.57
Weighted average exercise price, forfeited			7.58
Weighted average exercise price unvested, end of year		$ 0.31	$ 0.36
Average remaining contractual term (years) unvested, beginning of year		7 years 10 months 3 days	8 years 7 months 10 days
Average remaining contractual term (years) unvested, end of year		8 years 10 months 3 days	7 years 10 months 3 days
Aggregate intrinsic value unvested, beginning of year
Aggregate intrinsic value, granted
Aggregate intrinsic value, vested
Aggregate intrinsic value, forfeited
Aggregate intrinsic value unvested, end of year