Revenues - Disaggregated by Revenue Source (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Net revenue	$ 207,419	$ 233,463	$ 623,247	$ 702,236
Total broadcast radio revenue
Disaggregation of Revenue [Line Items]
Net revenue	146,250	177,074	441,023	521,982
Spot
Disaggregation of Revenue [Line Items]
Net revenue	105,890	124,813	310,668	355,735
Network
Disaggregation of Revenue [Line Items]
Net revenue	40,360	52,261	130,355	166,247
Digital
Disaggregation of Revenue [Line Items]
Net revenue	37,215	34,910	106,842	104,604
Other
Disaggregation of Revenue [Line Items]
Net revenue	$ 23,954	$ 21,479	$ 75,382	$ 75,650