STOCK-BASED COMPENSATION - Schedule of Performance Based Units (Details) - The 2014 Plan - Performance-based Restricted Stock Units $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2018 USD ($) $ / shares shares
Number of Shares
Non-vested performance-based restricted stock units at the beginning of the period (in shares) | shares	0
Granted (in shares) | shares	523,187
Vested (in shares) | shares	0
Forfeited (in shares) | shares	(36,800)
Non-vested performance-based restricted stock units at the end of the period (in shares) | shares	486,387
Weighted Average Grant Date Fair Value Per Share
Non-vested performance-based restricted stock units at the beginning of the period (in dollars per share) | $ / shares	$ 0.00
Granted (in dollars per share) | $ / shares	10.18
Vested (in dollars per share) | $ / shares	0.00
Forfeited (in dollars per share) | $ / shares	10.04
Non-vested performance-based restricted stock units at the end of the period (in dollars per share) | $ / shares	$ 10.19
Weighted Average Remaining Contractual Term
Non-vested performance-based restricted stock units at the end of the period	2 years 4 months 10 days
Aggregate Intrinsic Value
Non-vested performance-based restricted stock units at the end of the period | $	$ 2,860