GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Oct. 01, 2019
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Goodwill, Impairment Loss					$ 5,800	$ 17,412
Pre Tax Impairment Charges	$ 10,600		$ 21,300		10,600	21,300
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	1,000		14,700		4,800	3,900
Indefinite-Lived License Agreements	$ 582,697		$ 600,134		582,697	600,134
Amortization of Intangible Assets					10,900	26,700
Digital Segment [Member]
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Goodwill, Impairment Loss					$ 5,800	0
Pre Tax Impairment Charges							$ 5,800
Atlanta [Member]
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Goodwill, Impairment Loss						$ 14,700
Charlotte Goodwill [Member]
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Goodwill, Impairment Loss				$ 2,700
2018 Interim Impairment Testing [Member]
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)				3,900
2018 Interim Impairment Testing [Member] | Charlotte Goodwill [Member]
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Goodwill, Impairment Loss				$ 2,700
2019 Interim Impairment Testing [Member]
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		$ 3,800