STOCK BASED COMPENSATION - Awards Outstanding (Details) - shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Stock options
Number of Options Outstanding and Exercisable
Options granted (in shares)	376,667	155,000
Restricted Stock Units
Number of RSUs Outstanding
Beginning balance, non vested (in shares)	438,712
Shares granted (in shares)	200,000	200,000
Shares vested (in shares)	(12,500)
Shares forfeited (in shares)	0
Shares expired (in shares)	0
Ending balance, non vested (in shares)	626,212
2013 and 2014 Plans | Stock options
Number of Options Outstanding and Exercisable
Beginning balance, outstanding (in shares)	2,341,340
Options granted (in shares)	376,667
Options exercised (in shares)	0
Options forfeited (in shares)	0
Options expired (in shares)	0
Ending balance, outstanding (in shares)	2,718,007
Exercisable (in shares)	1,378,473