INCOME TAXES - Reconciliation of the Income Tax Rate (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Tax benefit at statutory rate	$ (3,411)	$ (4,892)
State tax benefit, net of federal taxes	(16)	0
Valuation allowance changes affecting income tax provision	3,388	6,781
Other	62	39
Total income tax provision	$ 23	$ 1,928