Annual report pursuant to Section 13 and 15(d)

IMPAIRMENT OF GOODWILL AND OTHER INDEFINITE-LIVED INTANGIBLE ASSETS (Details 4)

v3.8.0.1
IMPAIRMENT OF GOODWILL AND OTHER INDEFINITE-LIVED INTANGIBLE ASSETS (Details 4)
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Radio Clusters [Member] | Goodwill-Broadcast [Member]      
Fair Value Inputs, Assets, Quantitative Information [Line Items]      
Risk adjusted discount rate 9.00% 8.50% 8.00%
Operating profit margin ranges     49.70%
Long-term revenue market growth rate ranges 1.90% 1.90% 2.00%
Maximum [Member] | Radio Clusters [Member] | Goodwill-Broadcast [Member]      
Fair Value Inputs, Assets, Quantitative Information [Line Items]      
Operating profit margin ranges 36.20% 43.30%  
Minimum [Member] | Radio Clusters [Member] | Goodwill-Broadcast [Member]      
Fair Value Inputs, Assets, Quantitative Information [Line Items]      
Operating profit margin ranges (7.80%) (18.50%)  
Digital Media Enterprise Valuations [Member]      
Fair Value Inputs, Assets, Quantitative Information [Line Items]      
Risk adjusted discount rate 10.00%    
Digital Media Enterprise Valuations [Member] | Maximum [Member]      
Fair Value Inputs, Assets, Quantitative Information [Line Items]      
Risk adjusted discount rate   9.50% 9.00%
Operating profit margin ranges 36.00% 8.20% 13.80%
Long-term revenue market growth rate ranges 2.00% 2.50% 3.00%
Digital Media Enterprise Valuations [Member] | Minimum [Member]      
Fair Value Inputs, Assets, Quantitative Information [Line Items]      
Risk adjusted discount rate   8.50% 8.00%
Operating profit margin ranges 8.00% (20.30%) (8.90%)
Long-term revenue market growth rate ranges 1.90% 1.90% 2.00%
Publishing Enterprise Valuations [Member]      
Fair Value Inputs, Assets, Quantitative Information [Line Items]      
Risk adjusted discount rate 10.00% 8.50% 8.00%
Long-term revenue market growth rate ranges 1.90% 1.90% 2.00%
Publishing Enterprise Valuations [Member] | Maximum [Member]      
Fair Value Inputs, Assets, Quantitative Information [Line Items]      
Operating profit margin ranges 5.50% 5.70% 6.20%
Publishing Enterprise Valuations [Member] | Minimum [Member]      
Fair Value Inputs, Assets, Quantitative Information [Line Items]      
Operating profit margin ranges 5.00% 3.50% 4.20%