STOCKHOLDERS' (DEFICIT) EQUITY - Treasury Stock (Details) - shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Stockholders' Equity Attributable to Parent [Abstract]
Treasury stock surrendered to satisfy tax withholding obligations (in shares)	16,952	54,579
Treasury stock (in shares)	2,654,051	2,637,099
Treasury shares acquired during the period	0	0
Treasury shares issued during the period	0	0