STOCK-BASED COMPENSATION (Details 3) (USD $)	6 Months Ended
	Jun. 30, 2013
Options outstanding under the plan:
Total options outstanding	7,561,709
Weighted average remaining contractual life (in years)	6 years 2 months 26 days
Weighted average exercise price per share	$ 3.58
Total options outstanding and vested	4,898,959
Total in-the-money options outstanding	2,489,888
Aggregate intrinsic value of in-the-money options outstanding	$ 2,596,018
Total in-the-money options vested and outstanding	757,388
Aggregate intrinsic value of in-the-money options outstanding and vested	$ 561,043