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Revenues - Summary of Revenues Disaggregated by Major Source (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Disaggregation Of Revenue [Line Items]
Total revenue	$ 120,630	$ 97,156	$ 313,216	$ 257,986
Digital Advertising
Disaggregation Of Revenue [Line Items]
Total revenue	85,200	45,871	205,248	125,161
Broadcast Advertising
Disaggregation Of Revenue [Line Items]
Total revenue	25,496	39,998	76,237	97,692
Spectrum Usage Rights
Disaggregation Of Revenue [Line Items]
Total revenue	1,308	1,707	4,875	5,092
Retransmission Consent
Disaggregation Of Revenue [Line Items]
Total revenue	7,380	8,031	23,164	26,011
Other
Disaggregation Of Revenue [Line Items]
Total revenue	$ 1,246	$ 1,549	$ 3,692	$ 4,030

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