GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS - Intangible Assets Excluding Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 130,868	$ 131,821
Less: Accumulated amortization	(80,709)	(75,768)
Other intangible assets, net	$ 50,159	56,053
Remaining Weighted-Average Period of Amortization	4 years 3 months 18 days
Trade names [Member]
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 17,425	17,425
Remaining Weighted-Average Period of Amortization	1 year 9 months 18 days
Trade names [Member] | Maximum
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Period of Amortization	5 years
Trade names [Member] | Minimum
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Period of Amortization	1 year
Intellectual property [Member]
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 9,531	9,531
Remaining Weighted-Average Period of Amortization	0 years
Intellectual property [Member] | Maximum
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Period of Amortization	10 years
Intellectual property [Member] | Minimum
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Period of Amortization	4 years
Acquired income leases [Member]
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 127	127
Remaining Weighted-Average Period of Amortization	9 years 1 month 6 days
Acquired income leases [Member] | Maximum
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Period of Amortization	15 years
Acquired income leases [Member] | Minimum
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Period of Amortization	3 years
Advertiser agreements [Member]
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 46,582	46,789
Remaining Weighted-Average Period of Amortization	1 year 3 months 18 days
Advertiser agreements [Member] | Maximum
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Period of Amortization	12 years
Advertiser agreements [Member] | Minimum
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Period of Amortization	1 year
Favorable office and transmitter leases [Member]
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 2,097	2,097
Remaining Weighted-Average Period of Amortization	38 years 3 months 18 days
Favorable office and transmitter leases [Member] | Maximum
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Period of Amortization	60 years
Favorable office and transmitter leases [Member] | Minimum
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Period of Amortization	2 years
Brand names [Member]
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 4,413	4,413
Finite-Lived Intangible Asset, Period of Amortization	10 years
Remaining Weighted-Average Period of Amortization	5 years 10 months 24 days
Brand names - unamortized [Member]
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 39,690	39,690
Debt costs [Member]
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 1,267	2,053
Remaining Weighted-Average Period of Amortization	4 years 1 month 6 days
Launch assets [Member]
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 9,021	9,021
Remaining Weighted-Average Period of Amortization	3 years 3 months 18 days
Other intangibles [Member]
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 715	$ 675
Finite-Lived Intangible Asset, Period of Amortization	1 year
Other intangibles [Member] | Maximum
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Period of Amortization	5 years
Other intangibles [Member] | Minimum
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Period of Amortization	1 year