Revenues - Summary of Revenues Disaggregated by Major Source (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation Of Revenue [Line Items]
Total revenue	$ 239,006	$ 197,172
Digital Advertising
Disaggregation Of Revenue [Line Items]
Total revenue	196,482	153,711
Broadcast Advertising
Disaggregation Of Revenue [Line Items]
Total revenue	29,627	31,457
Spectrum Usage Rights
Disaggregation Of Revenue [Line Items]
Total revenue	2,146	1,535
Retransmission Consent
Disaggregation Of Revenue [Line Items]
Total revenue	9,623	9,195
Other
Disaggregation Of Revenue [Line Items]
Total revenue	$ 1,128	$ 1,274