Other matters (Details)				1 Months Ended			3 Months Ended			9 Months Ended
	Nov. 07, 2023 lawsuit letter	May 26, 2023 USD ($) preliminaryApproval	Oct. 03, 2018 defendant	Jun. 30, 2022 USD ($)	Jun. 30, 2019 defendant	Dec. 13, 2018 defendant	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Jun. 30, 2022	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)	Jan. 31, 2022 USD ($)
Business Acquisition [Line Items]
Corporate - General and administrative expenses							$ 13,552,000	$ 13,367,000		$ 52,158,000	$ 48,299,000
Related Party
Business Acquisition [Line Items]
Proceeds from maturity of debt securities available for sale				$ 3,000,000
Related Party | Intangible Contract Asset
Business Acquisition [Line Items]
Amount of intangible contract asset													$ 20,800,000
Intangible asset useful life													2 years
Related Party | MadHive Inc
Business Acquisition [Line Items]
Agreement term extension period									2 years
Equity And Debt Investment | Related Party
Business Acquisition [Line Items]
Corporate - General and administrative expenses							22,700,000	$ 30,400,000		71,800,000	$ 86,300,000
Accounts payable							$ 6,600,000			$ 6,600,000		$ 10,000,000
Clay, Massey & Associates, P.C. v. Gray Television
Business Acquisition [Line Items]
Number of other broadcasters settling DOJ complaint (defendant) | defendant			16		4
Number of co defendants | preliminaryApproval		4
Settlement amount		$ 0
Loss contingency, damages sought, value		$ 48,000,000
Settled Litigation
Business Acquisition [Line Items]
Number of other broadcasters settling DOJ complaint (defendant) | defendant					4	7
Pending Litigation | Merger Related Lawsuits | Subsequent Event
Business Acquisition [Line Items]
Number of lawsuit filed | lawsuit	7
Number of demand letter received | letter	4