GOODWILL AND OTHER INTANGIBLE ASSETS - Changes in Radio Broadcasting Licenses (Details) - USD ($) $ in Thousands	3 Months Ended						12 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Indefinite-Lived Intangible Assets [Roll Forward]
Beginning balance							$ 39,690
Impairment charges							$ (20,200)
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration]							Impairment of goodwill and intangible assets	Impairment of goodwill and intangible assets
Ending balance			$ 39,690				$ 26,600	$ 39,690
Radio broadcasting licenses
Indefinite-Lived Intangible Assets [Roll Forward]
Beginning balance						$ 488,419	375,296	488,419
Acquisitions							955	23,431
Disposals							0	(7,276)
Impairment charges	$ (37,700)	$ (80,800)	(5,000)	$ (85,400)	$ (22,100)	$ (16,800)	(118,492)	(129,278)
Ending balance			$ 375,296				$ 257,759	$ 375,296