GOODWILL AND RADIO BROADCASTING LICENSES (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Gross goodwill	$ 373,379
Accumulated impairment losses	(115,095)
Net goodwill at March 31, 2017	258,284	$ 258,284
Radio Broadcasting Segment [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Gross goodwill	154,863
Accumulated impairment losses	(84,436)
Net goodwill at March 31, 2017	70,427
Reach Media Segment [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Gross goodwill	30,468
Accumulated impairment losses	(16,114)
Net goodwill at March 31, 2017	14,354
Digital Segment [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Gross goodwill	23,004
Accumulated impairment losses	(14,545)
Net goodwill at March 31, 2017	8,459
Cable Television Segment [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Gross goodwill	165,044
Accumulated impairment losses	0
Net goodwill at March 31, 2017	$ 165,044