Shareholder's Equity - Schedule of Option Activity (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2019	Dec. 31, 2017
Weighted average exercise price - options, granted	$ 1.88	$ 3.11	$ 1.66
Weighted average remaining contractual life - options outstanding at ending of period		1 year 9 months 18 days
Employees and Directors [Member]
Number of options outstanding at beginning of period		510,904
Number of options, granted		1,919,000
Number of options, exercised		(20,759)
Number of options, forfeited		(33,333)
Number of options outstanding at end of period	510,904	2,375,812
Number of options exercisable at end of year		806,397
Weighted average exercise price - options outstanding at beginning of period		$ 4.32
Weighted average exercise price - options, granted		4.54
Weighted average exercise price - options, exercised		0.42
Weighted average exercise price - options, forfeited		4.25
Weighted average exercise price - options, outstanding at end of period	$ 4.32	4.48
Weighted average exercise price exercisable at end of year		$ 4.33
Weighted average remaining contractual life - options outstanding at beginning of period		9 years
Weighted average remaining contractual life - options outstanding at ending of period		9 years 2 months 12 days
Weighted average remaining contractual life - options exercisable at end of period		8 years
Aggregate intrinsic value at beginning of period		$ 625,626
Aggregate intrinsic value, Granted		237,463
Aggregate intrinsic value, Exercised		(90,033)
Aggregate intrinsic value at end of period	$ 625,626	773,056
Aggregate intrinsic value exercisable at end of year		$ 426,510
Employees and Directors [Member] | Restricted Shares [Member]
Number of options outstanding at beginning of period
Number of options, granted		340,000
Number of options, exercised
Number of options, forfeited
Number of options outstanding at end of period		340,000
Number of options exercisable at end of year
Weighted average exercise price - options outstanding at beginning of period
Weighted average exercise price - options, granted		4.62
Weighted average exercise price - options, exercised
Weighted average exercise price - options, forfeited
Weighted average exercise price - options, outstanding at end of period		4.62
Weighted average exercise price exercisable at end of year
Weighted average remaining contractual life - options outstanding at beginning of period		4 years 9 months 18 days
Weighted average remaining contractual life - options outstanding at ending of period		4 years 9 months 18 days
Weighted average remaining contractual life - options exercisable at end of period		0 years