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INTANGIBLE ASSETS AND GOODWILL (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
USD ($)
number
Jun. 30, 2014
USD ($)
number
Jun. 30, 2015
USD ($)
Jun. 30, 2014
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Changes in goodwill [Roll Forward]            
Goodwill before cumulative loss on impairment         $ 164,465 $ 164,465
Accumulated loss on impairment         $ (125,615) $ (125,615)
Beginning balance after cumulative loss on impairment     $ 38,850 $ 38,850    
Loss on impairment during the year     0 0    
Acquisition     0 0    
Dispositions     0 0    
Ending balance $ 38,850 $ 38,850 38,850 38,850    
Broadcasting License Impairment Testing [Member]            
Estimates and assumptions used for impairment test [Line Items]            
Discount rates 9.70% 9.60%        
Broadcasting License Impairment Testing [Member] | Maximum            
Estimates and assumptions used for impairment test [Line Items]            
Operating profit margin ranges of the markets of the Company 40.00% 40.00%        
Long-term revenue growth rate ranges of the markets of the Company 2.00% 2.00%        
Broadcasting License Impairment Testing [Member] | Minimum            
Estimates and assumptions used for impairment test [Line Items]            
Operating profit margin ranges of the markets of the Company 25.00% 25.00%        
Long-term revenue growth rate ranges of the markets of the Company 1.50% 1.50%        
Goodwill Impairment Testing [Member]            
Estimates and assumptions used for impairment test [Line Items]            
Discount rates 9.70% 9.60%        
Goodwill Impairment Testing [Member] | Maximum            
Estimates and assumptions used for impairment test [Line Items]            
Long-term revenue growth rate ranges of the markets of the Company 2.00% 2.00%        
Market approach for step one goodwill analysis [Abstract]            
Estimates of market multiples | number 8 8        
Goodwill Impairment Testing [Member] | Minimum            
Estimates and assumptions used for impairment test [Line Items]            
Long-term revenue growth rate ranges of the markets of the Company 1.50% 1.50%        
Market approach for step one goodwill analysis [Abstract]            
Estimates of market multiples | number 7.5 7.5        
Radio Broadcasting Licences [Member]            
Changes in broadcasting licenses [Line Items]            
Beginning of period balance     718,992 718,542    
Impairment loss     0 0    
Acquisition     100 450    
Dispositions     0 0    
Ending period balance $ 719,092 $ 718,992 $ 719,092 $ 718,992