STOCKHOLDERS' EQUITY (Details) - USD ($)	9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Options, Grants	732,869	1,166,930
Number of Options, Exercised	58,190
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Options, Grants	733,000
Number of Options, Exercised	58,000
Number of Option, Forfeited/cancelled/expired/settled	1,905,000
Number of Options, Balance at End of Year	3,574,000		4,804,000
Number of Options, Vested and expected to vest	3,457,000
Number of Options, Unvested	1,149,000
Number of Options, Exercisable	2,425,000
Weighted-Average Exercise Price, Grants (in dollars per share)	$ 1.81
Weighted-Average Exercise Price, Exercised (in dollars per share)	1.41
Weighted-Average Exercise Price, Forfeited/cancelled/expired/settled (in dollars per share)	1.43
Weighted-Average Exercise Price, Balance at End of Year (in dollars per share)	2.12		$ 1.89
Weighted-Average Exercise Price, Vested and expected to vest (in dollars per share)	2.13
Weighted-Average Exercise Price, Unvested (in dollars per share)	1.85
Weighted-Average Exercise Price, Exercisable (in dollars per share)	$ 2.25
Weighted-Average Remaining Contractual Term, Outstanding (in years)	7 years 5 months 8 days		4 years 10 months 24 days
Weighted-Average Remaining Contractual Term, Vested and expected to vest (in years)	7 years 4 months 24 days
Weighted-Average Remaining Contractual Term, Unvested (in years)	8 years 11 months 16 days
Weighted-Average Remaining Contractual Term, Exercisable (in years)	6 years 8 months 19 days
Aggregate Intrinsic Value, Outstanding	$ 464,000		$ 795,000
Aggregate Intrinsic Value, Vested and expected to vest	449,000
Aggregate Intrinsic Value, Unvested	173,000
Aggregate Intrinsic Value, Exercisable	$ 291,000