AFFILIATE AND RELATED PARTY TRANSACTIONS - Revenue and Related Charges (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Related Party Transactions [Abstract]
Revenue	$ 545	$ 426	$ 1,397	$ 820
Operating expenses:
Programming and other direct costs	(1,671)	(1,196)	(6,690)	(3,026)
Other operating expenses, net	(905)	(8,302)	(15,154)	(24,266)
Operating expenses, net	(2,576)	(9,498)	(21,844)	(27,292)
Related Party Transaction, Loss on Extinguishment of Debt of Deferred Financing Costs	0	0	0	(513,723)
Interest expense	0	0	0	(90,405)
RelatedPartyTransaction,MiscExpense	0		149
Net charges	(2,031)	(9,072)	(20,298)	(630,600)
Capital expenditures	$ 3,945	$ 3,549	$ 6,679	$ 12,914