SEGMENT DATA (Details) - USD ($) $ in Thousands	3 Months Ended		4 Months Ended	5 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	May 01, 2019	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting Information [Line Items]
Revenue	$ 948,338	$ 920,492	$ 1,073,471	$ 1,583,984	$ 2,585,028
Direct operating expenses	290,971	268,606	359,696	475,262	773,424
Selling, general and administrative expenses	341,353	329,436	436,345	568,493	1,003,728
Corporate expenses	70,044	56,699	66,020	104,434	162,075
Depreciation and amortization	95,268	43,295	52,834	154,651	175,546
Impairment charges	0	33,150	91,382	0	33,150
Other operating expense, net	(9,880)	(2,462)	(154)	(6,634)	(6,912)
Operating income	140,822	186,844	67,040	274,510	430,193
Capital expenditures	28,870	20,142	36,197	46,305	47,448
Share-based compensation expense	17,112	456	498	20,151
Operating segments | Audio
Segment Reporting Information [Line Items]
Revenue	890,364	852,280	1,006,677	1,486,594	2,409,330
Direct operating expenses	283,984	261,645	350,501	463,455	752,447
Selling, general and administrative expenses	310,337	297,851	396,032	516,343	912,412
Corporate expenses	0	0		0	0
Depreciation and amortization	87,442	33,754	40,982	142,019	146,048
Impairment charges		0	0		0
Other operating expense, net	0	0	0	0	0
Operating income	208,601	259,030	219,162	364,777	598,423
Capital expenditures	23,705	16,951	31,177	37,259	40,836
Share-based compensation expense	0	0	0	0	0
Operating segments | Audio and Media Services
Segment Reporting Information [Line Items]
Revenue	59,873	69,823	69,362	100,410	180,582
Direct operating expenses	7,281	7,052	9,559	12,153	21,160
Selling, general and administrative expenses	32,609	33,105	42,497	54,804	96,003
Corporate expenses	0	0		0	0
Depreciation and amortization	5,971	4,350	5,266	9,590	13,908
Impairment charges		0	0		0
Other operating expense, net	0	0	0	0	0
Operating income	14,012	25,316	12,040	23,863	49,511
Capital expenditures	1,994	1,695	1,263	2,824	2,458
Share-based compensation expense	0	0	0	0	0
Corporate and other reconciling items
Segment Reporting Information [Line Items]
Revenue	0	0	0	0	0
Direct operating expenses	0	0	0	0	0
Selling, general and administrative expenses	0	0	0	0	0
Corporate expenses	70,056	56,699	66,040	104,454	162,089
Depreciation and amortization	1,855	5,191	6,586	3,042	15,590
Impairment charges		33,150	91,382		33,150
Other operating expense, net	(9,880)	(2,462)	(154)	(6,634)	(6,912)
Operating income	(81,791)	(97,502)	(164,162)	(114,130)	(217,741)
Capital expenditures	3,171	1,496	3,757	6,222	4,154
Share-based compensation expense	17,112	456	498	20,151	1,628
Eliminations
Segment Reporting Information [Line Items]
Revenue	(1,899)	(1,611)	(2,568)	(3,020)	(4,884)
Direct operating expenses	(294)	(91)	(364)	(346)	(183)
Selling, general and administrative expenses	(1,593)	(1,520)	(2,184)	(2,654)	(4,687)
Corporate expenses	(12)	0	(20)	(20)	(14)
Depreciation and amortization	0	0	0	0	0
Impairment charges		0	0		0
Other operating expense, net	0	0	0	0	0
Operating income	0	0	0	0	0
Capital expenditures	0	0	0	0	0
Share-based compensation expense	0	0	0	0	0
Intersegment revenues
Segment Reporting Information [Line Items]
Revenue	1,899	1,611	2,568	3,020	4,884
Intersegment revenues | Audio
Segment Reporting Information [Line Items]
Revenue	168	0	243	280	0
Intersegment revenues | Audio and Media Services
Segment Reporting Information [Line Items]
Revenue	$ 1,731	$ 1,611	$ 2,325	$ 2,740	$ 4,884