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Number of Television Stations

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Number of Markets In Which Entity Operates

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Basis of presentation and accounting policies - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2025 USD ($) RadioStation Segment Market Station	Apr. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)
Disaggregation of Revenue [Line Items]
Number of operating segments \| Segment	1
Number of reportable segments \| Segment	1
Number of television stations \| Station	64
Number of radio stations \| RadioStation	2
Number of markets in which entity operates \| Market	51
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description	Our reportable segment structure has been determined based on our management and internal reporting structure, the nature of products and services we offer, and the financial information that is evaluated regularly by our chief operating decision maker (CODM), who is our Chief Executive Officer.
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]	srt:ChiefExecutiveOfficerMember
Allowance for doubtful accounts receivable \| $	$ 3,531		$ 2,831
Subsequent Event \| Gray
Disaggregation of Revenue [Line Items]
Redemption of noncontrolling interest \| $		$ 20,800