STOCK BASED COMPENSATION (Details 1) - USD ($)		6 Months Ended
		Jun. 30, 2016
Share Based Compensation Stock Options Activity [Line Items]
Number of Underlying Shares, Outstanding as of January 1, 2016 (in shares)		3,613,944
Number of Underlying Shares, Granted (in shares)		2,778,671
Number of Underlying Shares, Forfeited (in shares)		(481,256)
Number of Underlying Shares, Outstanding as of June 30, 2016 (in shares)		5,911,359
Number of Underlying Shares, Exercisable as of June 30, 2016 (in shares)		1,885,703
Number of Underlying Shares, Vested and expected to vest (in shares)	[1]	3,007,207
Weighted-Average Exercise Price Per Share, Outstanding as of January 1, 2016 (in dollars per share)		$ 2.4
Weighted-Average Exercise Price Per Share, Granted (in dollars per share)		0.26
Weighted-Average Exercise Price Per Share, Forfeited (in dollars per share)		1.66
Weighted-Average Exercise Price Per Share, Outstanding as of June 30, 2016 (in dollars per share)		1.45
Weighted-Average Exercise Price Per Share, Exercisable as of June 30, 2016 (in dollars per share)		3.07
Weighted-Average Exercise Price Per Share, Vested and expected to vest (in dollars per share)	[1]	$ 2.55
Weighted-Average Contractual Life Remaining in Years, Outstanding as of June 30, 2016		8 years 9 months 11 days
Weighted-Average Contractual Life Remaining in Years, Exercisable as of June 30, 2016		7 years 4 months 13 days
Weighted-Average Contractual Life Remaining in Years, Vested and expected to vest	[1]	7 years 9 months 7 days
Aggregate Intrinsic Value, Outstanding as of January 1, 2016		$ 0
Aggregate Intrinsic Value, Granted (in dollars)		0
Aggregate Intrinsic Value, Forfeited (in dollars)		0
Aggregate Intrinsic Value, Outstanding as of June 30, 2016		47,237
Aggregate Intrinsic Value, Exercisable as of June 30, 2016		0
Aggregate Intrinsic Value, Vested and expected to vest	[1]	$ 0

[1] vested shares and unvested shares after a forfeiture rate is applied