INCOME TAXES - Reconciliation of the Income Tax Rate (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Tax Disclosure [Abstract]
Tax benefit at statutory rate	$ (3,730)	$ (11,275)	$ (10,002)	$ (108,143)
State tax benefit, net of federal taxes	131	(446)	134	(435)
Valuation allowance changes affecting income tax provision	4,967	4,715	10,282	42,501
Goodwill impairment	0	2,385	0	43,362
Non-deductible transaction costs and other	(947)	70	179	171
Total income tax expense (benefit)	$ 421	$ (4,551)	$ 593	$ (22,544)