STOCK-BASED COMPENSATION - RSU Tables (Details) - RSU's - 2012 Equity Incentive Plan - $ / shares		12 Months Ended
	Jun. 24, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Number of RSU's
Outstanding at the beginning of period		635,000	953,000
Granted (in shares)	1,663,660	74,000		1,664,000
Vested (in shares)		(346,000)	(318,000)	(666,000)
Forfeited (in shares)				(45,000)
Outstanding at the end of period		363,000	635,000	953,000
Weighted Average Exercise Price
Granted (in dollars per share)				$ 13.19
Vested (in dollars per share)			$ 3.90	$ 9.39
Weighted Average Remaining Contractual Term (in years)		1 year	2 years