Other matters (Details)			1 Months Ended		3 Months Ended		9 Months Ended
	May 26, 2023 USD ($) Preliminaryapproval	Oct. 03, 2018 Defendant	Jun. 30, 2019 Defendant	Dec. 13, 2018 Defendant	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Business Acquisition [Line Items]
Corporate - General and administrative expenses					$ 13,188,000	$ 13,552,000	$ 40,671,000	$ 52,158,000
Equity And Debt Investment | Related Party
Business Acquisition [Line Items]
Cost of revenues					16,400,000	$ 22,700,000	53,700,000	$ 71,800,000
Accounts payable					$ 5,500,000		$ 5,500,000		$ 5,400,000
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
Loss contigency, settlement agreement date, approved by court							Dec. 31, 2023
Settled Litigation
Business Acquisition [Line Items]
Number of other broadcasters settling DOJ complaint (defendant) | Defendant			4	7