GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS - Changes in Radio Broadcasting Licenses (Details) - USD ($) $ in Thousands				3 Months Ended	6 Months Ended	12 Months Ended
	Oct. 01, 2022	Sep. 30, 2022	Oct. 01, 2021	Jun. 30, 2022	Jun. 30, 2022	Dec. 31, 2022	Dec. 31, 2021
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration]						Impairment of Long-Lived Assets Held-for-use	Impairment of Long-Lived Assets Held-for-use
Radio broadcasting licenses
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Beginning balance					$ 501,420	$ 501,420	$ 482,442
Acquisitions						23,642	21,082
Disposals						(3,200)
Impairment charges	$ (7,400)	$ (15,500)	$ (2,100)	$ (3,700)	$ (10,600)	(33,443)	(2,104)
Ending balance						$ 488,419	$ 501,420