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GOODWILL AND RADIO BROADCASTING LICENSES (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Schedule Of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]      
Goodwill, Impairment Loss   $ 2,712  
Charlotte Goodwill [Member]      
Schedule Of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]      
Goodwill, Impairment Loss   2,700  
Radio Broadcasting Licenses [Member]      
Schedule Of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]      
Impairment of Intangible Assets, Finite-lived   $ 3,800  
Pre Tax Impairment Charges $ 16,400   $ 16,400
Houston And Columbus [Member]      
Schedule Of Goodwill, Radio Broadcasting Licenses And Other Intangible Assets [Line Items]      
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) $ 16,400   $ 29,100