Revenues - Summary of Revenues Disaggregated by Major Source (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation Of Revenue [Line Items]
Total revenue	$ 956,209	$ 760,192	$ 344,026
Digital Advertising
Disaggregation Of Revenue [Line Items]
Total revenue	747,103	555,338	143,309
Broadcast Advertising
Disaggregation Of Revenue [Line Items]
Total revenue	161,713	154,297	152,677
Spectrum Usage Rights
Disaggregation Of Revenue [Line Items]
Total revenue	6,036	6,195	5,429
Retransmission Consent
Disaggregation Of Revenue [Line Items]
Total revenue	36,022	37,041	36,766
Other
Disaggregation Of Revenue [Line Items]
Total revenue	$ 5,335	$ 7,321	$ 5,845