AFFILIATE AND RELATED PARTY TRANSACTIONS - Revenue and Related Charges (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Related Party Transactions [Abstract]
Revenue	$ 496	$ 727	$ 1,088	$ 852
Operating expenses:
Programming and other direct costs	(2,087)	(3,865)	(3,774)	(5,019)
Other operating expenses, net	(2,020)	(6,255)	(4,266)	(14,249)
Operating expenses, net	(4,107)	(10,120)	(8,040)	(19,268)
Net charges	(3,611)	(9,244)	(6,952)	(18,267)
Capital Expenditures	2,536	1,108	5,890	2,734
Related Party Transaction, Other Revenues from Transactions with Related Party	$ 0	$ 149	$ 0	$ 149