DEBT - Schedule of Interest Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Amortization of deferred financing costs	$ 2,864	$ 3,691	$ 2,259
Amortization of debt discount	576	462	0
Loss on extinguishment of debt	0	2,373	15,898
Expense allocated to discontinued operations	0	0	41
Other, net	(600)	(183)	21
Interest expense, net	37,313	40,918	44,130
Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Debt interest expense, excluding amortization	2,190	1,829	873
Term Loan Facilities
Debt Instrument [Line Items]
Debt interest expense, excluding amortization	14,680	16,820	10,313
2021 Notes
Debt Instrument [Line Items]
Debt interest expense, excluding amortization	17,603	15,926	0
Prior Revolving Credit Facility
Debt Instrument [Line Items]
Debt interest expense, excluding amortization	0	0	765
2015 Notes
Debt Instrument [Line Items]
Debt interest expense, excluding amortization	$ 0	$ 0	$ 13,960