INTANGIBLE ASSETS AND GOODWILL (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Changes in broadcasting licenses [Line Items]
Beginning of period balance	$ 823,195	$ 807,381
Consolidation of a VIE	(15,738)	15,738
Impairment loss	(13,500)	0
Acquisition of radio stations	17,174	0
Assets held for sale	0	0
Deconsolidation of a subsidiary	0	(36)
Acquisition - other	0	112
Dispositions	0	0
Indefinitelived Intangible Assets Acquired Through Exchange	0	0
Ending period balance	811,131	823,195
Changes in goodwill [Roll Forward]
Beginning balance after cumulative loss on impairment	32,718
Ending balance	$ 32,761	$ 32,718