DEBT - SUMMARY OF OUTSTANDING LONG-TERM DEBT (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Total debt outstanding principal	$ 1,033,163	$ 884,533
Unamortized discount and deferred financing costs	(36,820)	(38,593)
Less: Current portion, outstanding principal	(7,350)	(48,348)
Less: Currrent portion, unamortized discount and deferred financing costs	263	1,811
Long-term debt, outstanding principal	1,025,813	836,185
Total unamortized discount and deferred financing costs	(36,557)	(36,782)
Total debt, net carrying amount	996,343	845,940
Less: Current portion	(7,087)	(46,537)
Long-term debt, net	989,256	799,403
Senior Notes [Member]
Debt Instrument [Line Items]
Total debt outstanding principal	300,000
Secured Debt [Member]
Debt Instrument [Line Items]
Total debt outstanding principal	733,163	0
Unamortized discount and deferred financing costs	(26,222)	0
Total debt, net carrying amount	706,941	0
Amended Term B-1 Loan [Member]
Debt Instrument [Line Items]
Total debt outstanding principal	0	452,533
Unamortized discount and deferred financing costs	0	(21,763)
Total debt, net carrying amount	0	430,770
Amended Term B-2 Loan [Member]
Debt Instrument [Line Items]
Total debt outstanding principal	0	132,000
Unamortized discount and deferred financing costs	0	(4,758)
Total debt, net carrying amount	0	127,242
Senior Notes Due December 2020 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Total debt outstanding principal	300,000	300,000
Unamortized discount and deferred financing costs	(10,598)	(12,072)
Total debt, net carrying amount	$ 289,402	$ 287,928