v3.10.0.1
INTANGIBLE ASSETS AND GOODWILL (Details)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2018
USD ($)
number
Sep. 30, 2018
USD ($)
Jun. 30, 2018
number
Jun. 30, 2017
number
Jun. 30, 2016
number
Jun. 30, 2015
number
Jun. 30, 2018
USD ($)
number
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Changes in Intangible assets [Line Items]                    
Goodwill $ 539,469             $ 539,469 $ 862,000  
Goodwill, Impairment Loss   $ 700                
Total Impairment of Intangibles               465,000    
Total Impairment of Intagibles, net of tax               423,200    
Market approach for step one goodwill analysis [Abstract]                    
Income model years used for the discounted cash flow approach | number             10      
Broadcasting License Impairment Testing [Member]                    
Estimates and assumptions used for impairment test [Line Items]                    
Discount rates 9.00%   9.00% 9.25% 9.50% 9.70%        
Broadcasting License Impairment Testing [Member] | Maximum [Member]                    
Estimates and assumptions used for impairment test [Line Items]                    
Operating profit margin ranges of the markets of the Company 37.00%   37.00% 40.00% 40.00% 40.00%        
Long-term revenue growth rate ranges of the markets of the Company 0.90%   1.00% 2.00% 2.00% 2.00%        
Broadcasting License Impairment Testing [Member] | Minimum [Member]                    
Estimates and assumptions used for impairment test [Line Items]                    
Operating profit margin ranges of the markets of the Company 22.00%   22.00% 19.00% 14.00% 25.00%        
Long-term revenue growth rate ranges of the markets of the Company 0.00%   0.50% 1.00% 1.00% 1.50%        
Goodwill Impairment Testing [Member]                    
Estimates and assumptions used for impairment test [Line Items]                    
Discount rates 9.00%   9.00% 9.25% 9.50% 9.70%        
Goodwill Impairment Testing [Member] | Maximum [Member]                    
Market approach for step one goodwill analysis [Abstract]                    
Estimates of market multiples | number 0   0 8 8 8        
Goodwill Impairment Testing [Member] | Minimum [Member]                    
Market approach for step one goodwill analysis [Abstract]                    
Estimates of market multiples | number 0   0 7.5 7.5 7.5        
Radio Broadcasting Licences [Member]                    
Changes in Intangible assets [Line Items]                    
Beginning of period balance             $ 2,649,959 2,649,959 823,195  
Dispositions               0 (13,500)  
Consolidation of a VIE               0 (15,738)  
Acquisition of radio stations               0 17,174  
Acquisition of radio stations - CBS Radio Merger               0 1,880,400  
Disposition of Licenses - EMF Sale               0 (54,661)  
Acqusition of radio Stations - Beasley Transaction               0 35,944  
Acquisition of radio stations - iHeartMedia Transaction               0 50,621  
Disposition of radio stations - iHeartMedia Transaction               0 (7,462)  
Assets held for sale               0 (66,014)  
Acquisition of radio stations - Emmis Acquisition               12,785 0  
Acquisition Of Radio Station - Jerry Lee Acquisition               27,346 0  
Impairment loss               (148,564) 0  
Disposition Of Radio Stations -WXTU Transaction               (24,901) 0  
Ending period balance $ 2,516,625             2,516,625 2,649,959  
Total Impairment of FCC Licenses               147,900    
Total Impairment of FCC Licenses, net of tax               108,800    
Goodwill [Member]                    
Changes in Intangible assets [Line Items]                    
Goodwill before cumulative loss on impairment 982,663             982,663 988,056 $ 158,333
Accumulated loss on impairment (443,194)             (443,194) (126,056) (125,615)
Goodwill $ 539,469             539,469 862,000 $ 32,718
Acquisition of radio stations               0 43  
Acquisition of radio stations - CBS Radio Merger               0 820,961  
Disposition of Licenses - EMF Sale               0 (266)  
Acqusition of radio Stations - Beasley Transaction               0 289  
Acquisition of radio stations - iHeartMedia Transaction               0 11,700  
Disposition of radio stations - iHeartMedia Transaction               0 (14)  
Assets held for sale               0 (2,990)  
Acquisition of radio stations - Emmis Acquisition               332 0  
Acquisition Of Radio Station - Jerry Lee Acquisition               24,396 0  
Disposition Of Radio Stations -WXTU Transaction               (8,623) 0  
Goodwill, Impairment Loss               (317,138) (441)  
Adjustments to Acquired Goodwill               (21,498) $ 0  
Total Impairment of Goodwill               317,100    
Total Impairment of Goodwill, net of tax               $ 314,400