GOODWILL AND RADIO BROADCASTING LICENSES - Additional Information (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2020
USD ($)
GOODWILL AND RADIO BROADCASTING LICENSES  
Goodwill, Impairment Loss $ 5,950
Radio Broadcasting Licenses [Member]  
GOODWILL AND RADIO BROADCASTING LICENSES  
Impairment charge (in millions) 47,700
Radio Market Reporting Units [Member]  
GOODWILL AND RADIO BROADCASTING LICENSES  
Impairment charge (in millions) $ 6,000