REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Net revenues	$ 297,030	$ 309,005
Revenue expected to be recognized	1,900
Broadcast revenues
Disaggregation of Revenue [Line Items]
Net revenues	276,757	284,465
Event and other revenues
Disaggregation of Revenue [Line Items]
Net revenues	16,785	19,526
Trade and barter revenues
Disaggregation of Revenue [Line Items]
Net revenues	$ 3,488	$ 5,014