AFFILIATE AND RELATED PARTY TRANSACTIONS - Revenue and Related Charges (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Related Party Transaction [Line Items]
Revenue	$ 3,379	$ 496	$ 6,867	$ 1,088
Operating expenses:
Programming and other direct costs	(1,738)	(2,087)	(3,927)	(3,774)
Other operating expenses, net	(2,161)	(2,020)	(6,102)	(4,266)
Operating expenses, net	(3,899)	(4,107)	(10,029)	(8,040)
Net charges	(520)	(3,611)	(3,162)	(6,952)
Capital Expenditures	$ 3,676	$ 2,536	$ 10,901	$ 5,890