INCOME TAXES - Reconciliation of the Income Tax Rate (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Tax benefit at statutory rate	$ (1,680)	$ (4,307)	$ (7,564)	$ (20,543)
State tax expense, net of federal taxes	102	378	191	528
Alternative Minimum Tax receivable	0	(925)	0	(925)
Valuation allowance changes affecting income tax provision	1,261	4,876	7,163	22,194
Permanent items	419	38	401	143
Total income tax expense	$ 102	$ 60	$ 191	$ 1,397