GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS (Details 7) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Finite-Lived Intangible Assets, Gross	$ 303,133	$ 298,313
Less: Accumulated amortization	(209,078)	(181,713)
Other intangible assets, net	$ 94,055	116,600
Remaining Weighted-Average Period of Amortization	4 years 9 months 18 days
Trade Names [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Finite-Lived Intangible Assets, Gross	$ 17,378	17,344
Remaining Weighted-Average Period of Amortization	3 years
Trade Names [Member] | Minimum [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Finite-Lived Intangible Asset, Period of Amortization	2 Years
Trade Names [Member] | Maximum [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Finite-Lived Intangible Asset, Period of Amortization	5 Years
Intellectual Property [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Finite-Lived Intangible Assets, Gross	$ 9,531	9,531
Remaining Weighted-Average Period of Amortization	0 years
Intellectual Property [Member] | Minimum [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Finite-Lived Intangible Asset, Period of Amortization	4 Years
Intellectual Property [Member] | Maximum [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Finite-Lived Intangible Asset, Period of Amortization	10 Years
Affiliate Agreements [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Finite-Lived Intangible Assets, Gross	$ 178,986	178,986
Finite-Lived Intangible Asset, Period of Amortization	8 Years
Remaining Weighted-Average Period of Amortization	1 year 3 months 18 days
Acquired Income Leases [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Finite-Lived Intangible Assets, Gross	$ 127	127
Remaining Weighted-Average Period of Amortization	12 years 3 months 18 days
Acquired Income Leases [Member] | Minimum [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Finite-Lived Intangible Asset, Period of Amortization	3 Years
Acquired Income Leases [Member] | Maximum [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Finite-Lived Intangible Asset, Period of Amortization	15 Years
Advertiser Agreements [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Finite-Lived Intangible Assets, Gross	$ 46,583	44,871
Remaining Weighted-Average Period of Amortization	5 years 1 month 6 days
Advertiser Agreements [Member] | Minimum [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Finite-Lived Intangible Asset, Period of Amortization	2 Years
Advertiser Agreements [Member] | Maximum [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Finite-Lived Intangible Asset, Period of Amortization	12 Years
Favorable Office And Transmitter Leases [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Finite-Lived Intangible Assets, Gross	$ 2,097	2,097
Remaining Weighted-Average Period of Amortization	40 years
Favorable Office And Transmitter Leases [Member] | Minimum [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Finite-Lived Intangible Asset, Period of Amortization	2 Years
Favorable Office And Transmitter Leases [Member] | Maximum [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Finite-Lived Intangible Asset, Period of Amortization	60 Years
Brand Names [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Finite-Lived Intangible Assets, Gross	$ 4,013	2,853
Finite-Lived Intangible Asset, Period of Amortization	10 Years
Remaining Weighted-Average Period of Amortization	7 years 8 months 12 days
Brand Names Unamortized [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Finite-Lived Intangible Assets, Gross	$ 39,690	39,690
Finite-Lived Intangible Asset, Period of Amortization	Indefinite
Remaining Weighted-Average Period of Amortization	0 years
ABL Facility Debt Costs [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Finite-Lived Intangible Assets, Gross	$ 421	421
Finite-Lived Intangible Asset, Period of Amortization	Debt term
Remaining Weighted-Average Period of Amortization	3 years 3 months 18 days
Launch assets [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Finite-Lived Intangible Assets, Gross	$ 3,632	1,784
Finite-Lived Intangible Asset, Period of Amortization	Contract length
Remaining Weighted-Average Period of Amortization	7 years 1 month 6 days
Other Intangibles Asset [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Finite-Lived Intangible Assets, Gross	$ 675	$ 609
Remaining Weighted-Average Period of Amortization	3 years 1 month 6 days
Other Intangibles Asset [Member] | Minimum [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Finite-Lived Intangible Asset, Period of Amortization	1 Years
Other Intangibles Asset [Member] | Maximum [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Finite-Lived Intangible Asset, Period of Amortization	5 Years