STOCKHOLDERS' EQUITY - Summary of Reclassifications Out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 6,469	$ 6,334	$ 12,922	$ 12,784
Income (loss) before income taxes	(1,749)	53,281	3,749	53,489
Provision (benefit) for income taxes	45	394	(1,543)	411
Net income (loss)	(1,704)	53,675	2,206	53,900
Interest rate swaps | Interest Rate Swaps | Amounts Reclassified Out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	38	138	91	208
Income (loss) before income taxes	38	138	91	208
Provision (benefit) for income taxes	0	0	0	0
Net income (loss)	$ 38	$ 138	$ 91	$ 208