REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 928,817	$ 919,185	$ 1,727,705	$ 1,730,114
Revenue from leases	275	829	425	1,139
Revenue, total	929,092	920,014	1,728,130	1,731,253
Broadcast Radio
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	425,490	429,152	784,828	812,390
Networks
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	106,591	122,168	208,642	230,122
Sponsorship and Events
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	39,121	38,210	66,950	70,797
Digital, excluding Podcast
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	179,918	162,931	327,077	308,327
Podcast
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	104,521	96,707	195,145	173,518
Audio and Media Services
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	68,746	64,432	136,538	124,451
Other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	4,430	5,585	8,525	10,509
Operating segments \| Multiplatform Group
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	575,632	595,115	1,068,945	1,123,818
Revenue from leases	275	829	425	1,139
Revenue, total	575,907	595,944	1,069,370	1,124,957
Operating segments \| Multiplatform Group \| Broadcast Radio
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	425,490	429,152	784,828	812,390
Operating segments \| Multiplatform Group \| Networks
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	106,591	122,168	208,642	230,122
Operating segments \| Multiplatform Group \| Sponsorship and Events
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	39,121	38,210	66,950	70,797
Operating segments \| Multiplatform Group \| Digital, excluding Podcast
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0	0	0
Operating segments \| Multiplatform Group \| Podcast
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0	0	0
Operating segments \| Multiplatform Group \| Audio and Media Services
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0	0	0
Operating segments \| Multiplatform Group \| Other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	4,430	5,585	8,525	10,509
Operating segments \| Digital Audio Group
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	285,614	260,854	524,582	484,250
Revenue from leases	0	0	0	0
Revenue, total	285,614	260,854	524,582	484,250
Operating segments \| Digital Audio Group \| Broadcast Radio
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0	0	0
Operating segments \| Digital Audio Group \| Networks
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0	0	0
Operating segments \| Digital Audio Group \| Sponsorship and Events
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0	0	0
Operating segments \| Digital Audio Group \| Digital, excluding Podcast
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	181,093	164,147	329,437	310,732
Operating segments \| Digital Audio Group \| Podcast
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	104,521	96,707	195,145	173,518
Operating segments \| Digital Audio Group \| Audio and Media Services
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0	0	0
Operating segments \| Digital Audio Group \| Other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0	0	0
Operating segments \| Audio & Media Services Group
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	70,082	65,804	139,250	127,155
Revenue from leases	0	0	0	0
Revenue, total	70,082	65,804	139,250	127,155
Operating segments \| Audio & Media Services Group \| Broadcast Radio
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0	0	0
Operating segments \| Audio & Media Services Group \| Networks
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0	0	0
Operating segments \| Audio & Media Services Group \| Sponsorship and Events
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0	0	0
Operating segments \| Audio & Media Services Group \| Digital, excluding Podcast
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0	0	0
Operating segments \| Audio & Media Services Group \| Podcast
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0	0	0
Operating segments \| Audio & Media Services Group \| Audio and Media Services
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	70,082	65,804	139,250	127,155
Operating segments \| Audio & Media Services Group \| Other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0	0	0
Eliminations
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	(2,511)	(2,588)	(5,072)	(5,109)
Revenue from leases	0	0	0	0
Revenue, total	(2,511)	(2,588)	(5,072)	(5,109)
Eliminations \| Broadcast Radio
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0	0	0
Eliminations \| Networks
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0	0	0
Eliminations \| Sponsorship and Events
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0	0	0
Eliminations \| Digital, excluding Podcast
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	(1,175)	(1,216)	(2,360)	(2,405)
Eliminations \| Podcast
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0	0	0
Eliminations \| Audio and Media Services
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	(1,336)	(1,372)	(2,712)	(2,704)
Eliminations \| Other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 0	$ 0	$ 0	$ 0