STOCKHOLDERS' DEFICIT - Carrying Value of Series A and C Preferred Stock (Details) - USD ($) $ in Thousands		12 Months Ended
	Mar. 09, 2015	Dec. 31, 2016
Convertible Preferred Stock
Class of Stock [Line Items]
Fair value assumptions, dividend yield (as a percent)	11.50%
Series A Preferred Stock
Increase (Decrease) in Temporary Equity [Roll Forward]
Preferred stock carrying value, beginning of period		$ 62,918
Exchange of convertible preferred stock		(60,776)
Accretion of discount related to beneficial conversion feature		40
Dividends Recorded		280
Preferred stock carrying value, at end of period		2,462
Series C Preferred Stock
Increase (Decrease) in Temporary Equity [Roll Forward]
Preferred stock carrying value, beginning of period		0
Exchange of convertible preferred stock		60,776
Accretion of discount related to beneficial conversion feature		652
Dividends Recorded		8,112
Preferred stock carrying value, at end of period		$ 69,540