Other matters - Narrative (Details)				1 Months Ended		12 Months Ended
		May 26, 2023 USD ($) Preliminaryapproval	Oct. 03, 2018 Defendant	Jun. 30, 2019 Defendant	Dec. 13, 2018 Defendant	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Business Acquisition [Line Items]
Cost of revenues	[1]					$ 1,730,843,000	$ 1,756,115,000	$ 1,718,857,000
Accounts receivable						603,522,000	604,300,000
Equity And Debt Investment | Related Party
Business Acquisition [Line Items]
Cost of revenues						700,000	58,100,000	$ 90,600,000
Accounts receivable						$ 100,000
Accounts payable							400,000
Two Customers | Sales Revenue | Customer Concentration Risk
Business Acquisition [Line Items]
Percentage of revenue						10.00%		10.00%
Customer One | Sales Revenue | Customer Concentration Risk
Business Acquisition [Line Items]
Revenues						$ 361,100,000	$ 386,900,000	$ 415,400,000
Customer Two | Sales Revenue | Customer Concentration Risk
Business Acquisition [Line Items]
Revenues						$ 273,800,000		$ 300,500,000
One Customer | Sales Revenue | Customer Concentration Risk
Business Acquisition [Line Items]
Percentage of revenue							10.00%
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

[1] Cost of revenues exclude charges for depreciation and amortization expense, which are shown separately above.