Annual report pursuant to Section 13 and 15(d)

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

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IMPAIRMENT OF GOODWILL AND OTHER INDEFINITE-LIVED INTANGIBLE ASSETS (Details) - Broadcast Licenses [Member]
$ in Thousands
 12 Months Ended
Dec. 31, 2017
USD ($)
Less than or equal to 25% [Member]  
Fair Value Measurements [Line Items]  
Number of accounting units 8
Broadcast license carrying value $ 174,287
Less than or equal to 25% [Member] | Station Operating Income [Member]  
Fair Value Measurements [Line Items]  
Number of accounting units 0
Broadcast license carrying value $ 0
>26% to 50% [Member]  
Fair Value Measurements [Line Items]  
Number of accounting units 2
Broadcast license carrying value $ 7,692
>26% to 50% [Member] | Station Operating Income [Member]  
Fair Value Measurements [Line Items]  
Number of accounting units 4
Broadcast license carrying value $ 49,765
>50% to 75% [Member]  
Fair Value Measurements [Line Items]  
Number of accounting units 0
Broadcast license carrying value $ 0
>75% [Member]  
Fair Value Measurements [Line Items]  
Number of accounting units 15
Broadcast license carrying value $ 105,641
>50% to 100% [Member] | Station Operating Income [Member]  
Fair Value Measurements [Line Items]  
Number of accounting units 1
Broadcast license carrying value $ 27,878
> than 100% [Member] | Station Operating Income [Member]  
Fair Value Measurements [Line Items]  
Number of accounting units 4
Broadcast license carrying value $ 27,372