REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Revenues	$ 3,749,012	$ 3,910,895	$ 3,556,906
Revenue from leases	2,013	1,388	1,434
Revenue, total	3,751,025	3,912,283	3,558,340
Broadcast Radio
Disaggregation of Revenue [Line Items]
Revenues	1,752,166	1,883,324	1,807,985
Networks
Disaggregation of Revenue [Line Items]
Revenues	466,404	503,244	503,052
Sponsorship and Events
Disaggregation of Revenue [Line Items]
Revenues	191,434	188,985	160,322
Digital, excluding Podcast
Disaggregation of Revenue [Line Items]
Revenues	656,519	658,154	576,073
Podcast
Disaggregation of Revenue [Line Items]
Revenues	407,848	358,432	252,564
Audio & Media Services
Disaggregation of Revenue [Line Items]
Revenues	251,290	298,954	241,355
Other
Disaggregation of Revenue [Line Items]
Revenues	23,351	19,802	15,555
Operating Segments \| Multiplatform Group
Disaggregation of Revenue [Line Items]
Revenues	2,433,355	2,595,802	2,487,584
Revenue from leases	2,013	1,388	1,434
Revenue, total	2,435,368	2,597,190	2,489,018
Operating Segments \| Multiplatform Group \| Broadcast Radio
Disaggregation of Revenue [Line Items]
Revenues	1,752,166	1,883,324	1,807,985
Operating Segments \| Multiplatform Group \| Networks
Disaggregation of Revenue [Line Items]
Revenues	466,404	503,244	503,052
Operating Segments \| Multiplatform Group \| Sponsorship and Events
Disaggregation of Revenue [Line Items]
Revenues	191,434	188,985	160,322
Operating Segments \| Multiplatform Group \| Digital, excluding Podcast
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Operating Segments \| Multiplatform Group \| Podcast
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Operating Segments \| Multiplatform Group \| Audio & Media Services
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Operating Segments \| Multiplatform Group \| Other
Disaggregation of Revenue [Line Items]
Revenues	23,351	20,249	16,225
Operating Segments \| Digital Audio Group
Disaggregation of Revenue [Line Items]
Revenues	1,069,167	1,021,824	834,482
Revenue from leases	0	0	0
Revenue, total	1,069,167	1,021,824	834,482
Operating Segments \| Digital Audio Group \| Broadcast Radio
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Operating Segments \| Digital Audio Group \| Networks
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Operating Segments \| Digital Audio Group \| Sponsorship and Events
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Operating Segments \| Digital Audio Group \| Digital, excluding Podcast
Disaggregation of Revenue [Line Items]
Revenues	661,319	663,392	581,918
Operating Segments \| Digital Audio Group \| Podcast
Disaggregation of Revenue [Line Items]
Revenues	407,848	358,432	252,564
Operating Segments \| Digital Audio Group \| Audio & Media Services
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Operating Segments \| Digital Audio Group \| Other
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Operating Segments \| Audio & Media Services Group
Disaggregation of Revenue [Line Items]
Revenues	256,702	304,302	247,957
Revenue from leases	0	0	0
Revenue, total	256,702	304,302	247,957
Operating Segments \| Audio & Media Services Group \| Broadcast Radio
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Operating Segments \| Audio & Media Services Group \| Networks
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Operating Segments \| Audio & Media Services Group \| Sponsorship and Events
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Operating Segments \| Audio & Media Services Group \| Digital, excluding Podcast
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Operating Segments \| Audio & Media Services Group \| Podcast
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Operating Segments \| Audio & Media Services Group \| Audio & Media Services
Disaggregation of Revenue [Line Items]
Revenues	256,702	304,302	247,957
Operating Segments \| Audio & Media Services Group \| Other
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Consolidation, Eliminations
Disaggregation of Revenue [Line Items]
Revenues	(10,212)	(11,033)	(13,117)
Revenue from leases	0	0	0
Revenue, total	(10,212)	(11,033)	(13,117)
Consolidation, Eliminations \| Broadcast Radio
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Consolidation, Eliminations \| Networks
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Consolidation, Eliminations \| Sponsorship and Events
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Consolidation, Eliminations \| Digital, excluding Podcast
Disaggregation of Revenue [Line Items]
Revenues	(4,800)	(5,238)	(5,845)
Consolidation, Eliminations \| Podcast
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Consolidation, Eliminations \| Audio & Media Services
Disaggregation of Revenue [Line Items]
Revenues	(5,412)	(5,348)	(6,602)
Consolidation, Eliminations \| Other
Disaggregation of Revenue [Line Items]
Revenues	$ 0	$ (447)	$ (670)