INCOME TAXES - Reconciliation of the Income Tax Rate (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Tax Disclosure [Abstract]
Tax benefit at statutory rate	$ (2,844)	$ (92,080)	$ (6,271)	$ (96,972)
State tax benefit, net of federal taxes	3	11	3	11
Valuation allowance changes affecting income tax provision	1,926	31,098	5,314	37,879
Goodwill impairment	0	40,977	0	40,977
Non-deductible transaction costs and other	1,064	73	1,126	112
Total income tax expense (benefit)	$ 149	$ (19,921)	$ 172	$ (17,993)