GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS - Radio Market Reporting Units (Details) - USD ($) $ in Thousands				6 Months Ended	12 Months Ended
	Oct. 01, 2022	Sep. 30, 2022	Oct. 01, 2021	Jun. 30, 2022	Dec. 31, 2022	Dec. 31, 2021
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Impairment loss, goodwill					$ 7,240	$ 0
Radio Market Reporting Units [Member]
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Impairment loss, goodwill	$ 2,900	$ 0	$ 0	$ 4,300
Discount rate	9.50%	9.50%	9.00%	9.50%
Terminal growth rate range		1.00%
Operating profit margin range		33.40%
Minimum | Radio Market Reporting Units [Member]
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Revenue growth rate range	(10.30%)		(10.70%)	(2.50%)
Terminal growth rate range	0.50%	1.00%	0.70%	0.70%
Operating profit margin range	16.60%	33.40%	21.20%	19.50%
Maximum | Radio Market Reporting Units [Member]
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Revenue growth rate range	72.00%		27.10%	2.50%
Terminal growth rate range	0.80%		1.00%	1.00%
Operating profit margin range	46.00%		47.30%	32.90%