STOCK BASED COMPENSATION (Details 1) (USD $)	3 Months Ended
	Mar. 31, 2014
Share Based Compensation Stock Options Activity [Line Items]
Number of Underlying Shares, Outstanding as of January 1, 2014 (in shares)	2,282,719
Number of Underlying Shares, Granted (in shares)	311,669
Number of Underlying Shares, Expired (in shares)	0
Number of Underlying Shares, Forfeited (in shares)	(61,221)
Number of Underlying Shares, Exercised (in shares)	0
Number of Underlying Shares, Outstanding as of March 31, 2014 (in shares)	2,533,167
Number of Underlying Shares, Exercisable as of March 31, 2014 (in shares)	1,253,137
Number of Underlying Shares, Vested and expected to vest (in shares)	2,355,778	[1]
Weighted-Average Exercise Price Per Share, Outstanding as of January 1, 2014 (in dollars per share)	$ 4.43
Weighted-Average Exercise Price Per Share, Granted (in dollars per share)	$ 2.20
Weighted-Average Exercise Price Per Share, Expired (in dollars per share)	$ 0
Weighted-Average Exercise Price Per Share, Forfeited (in dollars per share)	$ 4.70
Weighted-Average Exercise Price Per Share, Exercised (in dollars per share)	$ 0
Weighted-Average Exercise Price Per Share, Outstanding as of March 31, 2014 (in dollars per share)	$ 4.15
Weighted-Average Exercise Price Per Share, Exercisable as of March 31, 2014 (in dollars per share)	$ 4.47
Weighted-Average Exercise Price Per Share, Vested and expected to vest (in dollars per share)	$ 4.18	[1]
Weighted-Average Contractual Life Remaining in Years, Outstanding as of March 31, 2014	7 years 10 months 10 days
Weighted-Average Contractual Life Remaining in Years, Exercisable as of as of March 31, 2014	6 years 6 months 7 days
Weighted-Average Contractual Life Remaining in Years, Vested and expected to vest	7 years 9 months 4 days	[1]
Aggregate Intrinsic Value, Outstanding as of March 31, 2014	$ 107,800
Aggregate Intrinsic Value, Exercisable as of March 31, 2014	107,800
Aggregate Intrinsic Value, Vested and expected to vest (1)	$ 107,800

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