DEBT- Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Debt Instrument [Line Items]
Amortization of deferred financing costs	$ 740	$ 730	$ 2,074	$ 3,280
Amortization of debt discount	146	132	428	327
Other, net	(73)	(54)	(322)	(94)
Interest expense	9,507	9,567	27,750	29,203
Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Interest expense	555	413	1,425	1,181
Term Loan Facilities
Debt Instrument [Line Items]
Interest expense	3,701	3,700	10,980	13,119
Senior Unsecured 8.875% Notes
Debt Instrument [Line Items]
Interest expense	$ 4,438	$ 4,646	$ 13,165	$ 11,390