STOCK-BASED COMPENSATION (Details) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Stock Options
Outstanding, beginning - shares	3,060,834
Options granted - shares	250,000
Options forfeited/expired - shares	(91,667)
Options exercised - shares	(634,000)
Outstanding, ending - shares	2,585,167	3,060,834
Vested - shares	1,820,480
Exercisable - shares	1,820,480
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Outstanding, beginning - weighted average exercise price (in USD per share)	$ 5.89
Options granted - weighted average exercise price (in USD per share)	$ 7.91
Options forfeited/expired - weighted average exercise price (in USD per share)	$ 10.78
Options exercised - weighted average exercise price (in USD per share)	$ (0.87)
Outstanding, ending - weighted average exercise price (in USD per share)	$ 7.14	$ 5.89
Vested - weighted average exercise price (in USD per share)	$ 8.34
Exercisable - weighted average exercise price (in USD per share)	$ 8.34
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Outstanding, beginning - weighted average remaining contractual life (in years)	5 years 6 months 14 days	6 years 0 months 25 days
Options granted - weighted average remaining contractual life (in years)	9 years 9 months 18 days
Outstanding, ending - weighted average remaining contractual life (in years)	5 years 6 months 14 days	6 years 0 months 25 days
Vested - weighted average remaining contractual life (in years)	4 years 10 months 17 days
Exercisable - weighted average remaining contractual life (in years)	4 years 10 months 17 days
Outstanding, beginning - grant date fair value	$ 1,327,163
Options granted - grant date fair value	501,893
Options forfeited/expired - grant date fair value	(29,335)
Options exercised - grant date fair value	(262,241)
Outstanding, ending - grant date fair value	1,537,480	1,327,163
Vested - grant date fair value	657,010
Exercisable - grant date fair value	$ 657,010