STOCKHOLDERS' EQUITY (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Statement of Stockholders' Equity [Abstract]
Number of options, Outstanding Beginning Balance	1,916,900
Number of options, Granted	715,000
Number of options, Exercised	0
Number of options, Forfeited	(66,590)
Number of options, Expired	0
Number of options, Outstanding Ending Balance	2,565,310	1,916,900
Number of options, Expected to vest at March 31, 2019	2,565,310
Number of options, Exercisable at March 31, 2019	0
Weighted - average exercise price, Outstanding Beginning Balance	$ 6.50
Weighted - average exercise price, Granted	6.90
Weighted - average exercise price, Exercised	0.00
Weighted - average exercise price, Forfeited	6.80
Weighted - average exercise price, Expired	0.00
Weighted - average exercise price, Outstanding Ending Balance	6.61	$ 6.50
Weighted - average exercise price, Expected to vest at March 31, 2019	6.61
Weighted - average exercise price, Exercisable at March 31, 2019	$ 0.00
Weighted - average Contractual Term	9 years 7 months 17 days	9 years 9 months
Weighted - average Contractual Term, Expected to vest at March 31, 2019	9 years 7 months 17 days
Aggregate Intrinsic Value, Outstanding Ending Balance	$ 5,800,421
Aggregate Intrinsic Value, Expected to vest at March 31, 2019	$ 5,800,421