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GOODWILL AND OTHER INTANGIBLE ASSETS - Radio Broadcasting Licenses (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Sep. 30, 2024
Jun. 30, 2024
Dec. 31, 2023
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2024
Dec. 31, 2023
GOODWILL AND RADIO BROADCASTING LICENSES                
Impairment charge             $ 20,200  
Radio broadcasting licenses                
GOODWILL AND RADIO BROADCASTING LICENSES                
Impairment charge $ 37,700 $ 80,800 $ 5,000 $ 85,400 $ 22,100 $ 16,800 $ 118,492 $ 129,278
Discount rate 10.50% 10.00%   10.00% 9.50%      
Terminal growth rate range (0.50%) (0.50%) (0.50%) (0.50%)       (0.50%)
Minimum | Radio broadcasting licenses                
GOODWILL AND RADIO BROADCASTING LICENSES                
Discount rate     9.50%         9.50%
Revenue growth rate range (4.00%) (3.20%) (2.30%) (1.70%) 0.30%     (2.30%)
Terminal growth rate range         0.30%      
Mature market share range 1.10% 1.00% 5.20% 5.30% 0.90%     5.20%
Operating profit range 1.30% 2.50% 17.00% 17.00% 18.80%     17.00%
Maximum | Radio broadcasting licenses                
GOODWILL AND RADIO BROADCASTING LICENSES                
Discount rate     10.00%         10.00%
Revenue growth rate range 0.30% 0.20% 0.80% 0.00% 1.40%     0.80%
Terminal growth rate range         0.80%      
Mature market share range 30.50% 28.50% 30.00% 29.50% 28.80%     30.00%
Operating profit range 30.00% 30.00% 31.90% 33.50% 34.60%     31.90%