GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS - Goodwill Valuation Results (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
GOODWILL AND RADIO BROADCASTING LICENSES
Gross goodwill	$ 378,046	$ 378,046	$ 377,609
Additions	0	437
Impairments	0	(7,240)
Accumulated impairment losses	(161,447)	(161,447)	(154,207)
Net goodwill	216,599	216,599	223,402
Radio Broadcasting Segment
GOODWILL AND RADIO BROADCASTING LICENSES
Gross goodwill	154,967	154,967	154,530
Additions	0	437
Impairments	0	(7,240)
Accumulated impairment losses	(124,988)	(124,988)	(117,748)
Net goodwill	29,979	29,979	36,782
Reach Media Segment
GOODWILL AND RADIO BROADCASTING LICENSES
Gross goodwill	30,468	30,468	30,468
Additions	0	0
Impairments	0	0
Accumulated impairment losses	(16,114)	(16,114)	(16,114)
Net goodwill	14,354	14,354	14,354
Digital Segment [Member]
GOODWILL AND RADIO BROADCASTING LICENSES
Gross goodwill	27,567	27,567	27,567
Additions	0	0
Impairments	0	0
Accumulated impairment losses	(20,345)	(20,345)	(20,345)
Net goodwill	7,222	7,222	7,222
Cable Television Segment
GOODWILL AND RADIO BROADCASTING LICENSES
Gross goodwill	165,044	165,044	165,044
Additions	0	0
Impairments	0	0
Accumulated impairment losses	0	0	0
Net goodwill	$ 165,044	$ 165,044	$ 165,044