NOTES PAYABLE - Schedule of Notes Payable (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Debt Disclosure [Abstract]
Senior secured notes	$ 140,000	$ 150,000
Equipment note payable	426	1,654
Total notes payable outstanding	140,426	151,654
Less current portion of equipment notes payable	426	1,654
Total long-term portion of notes payable	$ 140,000	$ 150,000