GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS - Radio Broadcasting Licenses (Details) - Radio Broadcasting Licenses [Member] - 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 of indefinite lived intangible assets	$ 7,400	$ 15,500	$ 2,100	$ 3,700	$ 10,600	$ 33,443	$ 2,104
Discount rate	9.50%	9.50%	9.00%	9.50%	9.50%
Minimum
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Revenue growth rate range	0.00%	0.30%	0.70%	0.70%	0.70%
Terminal growth rate range	0.30%	0.30%	0.70%	0.70%	0.70%
Mature market share range	6.80%	6.80%	6.20%	6.90%	6.90%
Mature operating profit margin range	27.20%	28.30%	26.90%	28.30%	28.30%
Maximum
Schedule of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]
Revenue growth rate range	1.70%	1.60%	8.00%	2.40%	2.40%
Terminal growth rate range	0.80%	0.80%	1.00%	1.00%	1.00%
Mature market share range	27.60%	27.60%	23.20%	25.60%	25.60%
Mature operating profit margin range	34.60%	36.10%	36.10%	36.10%	36.10%