Revenues - Summary of Revenues Disaggregated by Major Source (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disaggregation Of Revenue [Line Items]
Total revenue	$ 273,381	$ 221,695	$ 512,387	$ 418,867
Digital Advertising
Disaggregation Of Revenue [Line Items]
Total revenue	229,896	174,378	426,378	328,089
Broadcast Advertising
Disaggregation Of Revenue [Line Items]
Total revenue	30,983	35,347	60,610	66,804
Spectrum Usage Rights
Disaggregation Of Revenue [Line Items]
Total revenue	2,078	1,674	4,224	3,209
Retransmission Consent
Disaggregation Of Revenue [Line Items]
Total revenue	9,324	9,038	18,947	18,233
Other
Disaggregation Of Revenue [Line Items]
Total revenue	$ 1,100	$ 1,258	$ 2,228	$ 2,532