STOCK BASED COMPENSATION (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Stock Options
Outstanding, beginning - shares	2,648,583	3,060,834
Options granted - shares	525,000	325,000
Options exercised - shares	(25,000)	(637,750)
Options cancelled/forfeited/expired - shares	(275,001)	(99,501)
Outstanding, ending - shares	2,873,582	2,648,583	3,060,834
Vested - shares	1,881,395	1,820,480
Exercisable - shares	1,881,395	1,820,480
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding, beginning - weighted average exercise price (in USD per share)	$ 7.07	$ 5.89
Options granted - weighted average exercise price (in USD per share)	2.23	7.61
Options exercised - weighted average exercise price (in USD per share)	(0.45)	(0.88)
Options cancelled/forfeited/expired - weighted average exercise price (in USD per share)	(20.22)	(12.71)
Outstanding, ending - weighted average exercise price (in USD per share)	4.99	7.07	$ 5.89
Vested - weighted average exercise price (in USD per share)	5.70	8.27
Exercisable - weighted average exercise price (in USD per share)	$ 5.70	$ 8.27
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Outstanding - weighted average remaining contractual life (in years)	5 years 11 months 8 days	5 years 9 months 22 days	6 years 25 days
Options granted - weighted average remaining contractual life (in years)	9 years 8 months 16 days	9 years 8 months 8 days
Vested - weighted average remaining contractual life (in years)	4 years 6 months 18 days	4 years 7 months 20 days
Exercisable - weighted average remaining contractual life (in years)	4 years 6 months 18 days	4 years 7 months 20 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Rollforward [Roll Forward]
Outstanding, beginning - grant date fair value	$ 1,654,641	$ 1,327,163
Options granted - grant date fair value	1,083,411	622,272
Options exercised - grant date fair value	(9,000)	(264,990)
Options cancelled/forfeited/expired - grant date fair value	(143,711)	(29,804)
Outstanding, ending - grant date fair value	2,585,341	1,654,641	$ 1,327,163
Vested - grant date fair value	372,367	654,948
Exercisable - grant date fair value	$ 372,367	$ 654,948