INCOME TAXES - Reconciliation of the Income Tax Rate (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Tax Disclosure [Abstract]
Tax benefit at statutory rate	$ (2,729)	$ (6,445)
State tax expense, net of federal taxes	48	36
Alternative minimum tax receivable	0	0
Valuation allowance changes affecting income tax provision	3,419	6,976
Non-deductible transaction costs and other	(690)	52
Total income tax expense	$ 48	$ 619