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GOODWILL AND OTHER INTANGIBLE ASSETS - Additional Information (Details) $ in Thousands	3 Months Ended						9 Months Ended	12 Months Ended
	Sep. 30, 2024 USD ($) market	Jun. 30, 2024 USD ($) market	Dec. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($) segment	Dec. 31, 2023 USD ($) segment	Dec. 31, 2022 USD ($)
GOODWILL AND RADIO BROADCASTING LICENSES
Number of reporting units in each of other business segments \| segment								3
Radio broadcasting licenses			$ 375,296					$ 257,759	$ 375,296
Term of radio broadcast station license								8 years
Renewal term of radio broadcast station license								8 years
Impairment charge								$ 20,200
Net goodwill			216,599					$ 196,425	$ 216,599	$ 216,599
Number of reportable segments \| segment								4	4
Goodwill, impairment loss								$ 20,174	$ 0
Amortization of intangible assets								$ 200	1,100
Impairment, Intangible Asset, Statement of Income or Comprehensive Income [Extensible Enumeration]								Impairment of goodwill and intangible assets
TV One
GOODWILL AND RADIO BROADCASTING LICENSES
Goodwill, impairment loss								$ 20,200
Radio broadcasting licenses
GOODWILL AND RADIO BROADCASTING LICENSES
Radio broadcasting licenses								257,800
Impairment charge	$ 37,700	$ 80,800	5,000	$ 85,400	$ 22,100	$ 16,800		118,492	129,278
Goodwill and Radio Broadcasting Licenses
GOODWILL AND RADIO BROADCASTING LICENSES
Impairment losses								118,500	129,300
Radio broadcasting licenses five markets
GOODWILL AND RADIO BROADCASTING LICENSES
Impairment charge		$ 80,800
Radio broadcasting licenses Ten markets
GOODWILL AND RADIO BROADCASTING LICENSES
Number of radio markets \| market	9
Impairment charge	$ 37,700
Radio Broadcasting
GOODWILL AND RADIO BROADCASTING LICENSES
Impairment charge								118,500
Net goodwill			29,979					29,979	29,979	29,979
Goodwill, impairment loss								0	0
Radio Broadcasting \| Radio broadcasting licenses five markets
GOODWILL AND RADIO BROADCASTING LICENSES
Number of radio markets \| market		9
TV One Trade Name \| Trade names
GOODWILL AND RADIO BROADCASTING LICENSES
Impairment charge							$ 9,100	4,000
Reach Media
GOODWILL AND RADIO BROADCASTING LICENSES
Net goodwill			$ 14,354					14,354	14,354	$ 14,354
Goodwill, impairment loss								$ 0	$ 0