v3.26.1
Goodwill and intangible assets - Schedule of Goodwill and Intangible Assets (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Intangible Asset, Finite-Lived [Line Items]    
Gross carrying amount $ 829,996 $ 830,679
Accumulated amortization 686,462 656,970
Net carrying amount 143,534 173,709
Indefinite-lived intangible assets:    
Total intangible assets 307,395 337,845
Goodwill 518,453 518,762
Mastheads    
Indefinite-lived intangible assets:    
Non-amortized intangible assets 163,861 164,136
Advertiser relationships    
Intangible Asset, Finite-Lived [Line Items]    
Gross carrying amount 434,583 434,928
Accumulated amortization 338,079 317,104
Net carrying amount 96,504 117,824
Other customer relationships    
Intangible Asset, Finite-Lived [Line Items]    
Gross carrying amount 88,577 88,609
Accumulated amortization 71,388 67,427
Net carrying amount 17,189 21,182
Subscriber relationships    
Intangible Asset, Finite-Lived [Line Items]    
Gross carrying amount 240,266 240,272
Accumulated amortization 210,425 205,602
Net carrying amount 29,841 34,670
Other intangible assets    
Intangible Asset, Finite-Lived [Line Items]    
Gross carrying amount 66,570 66,870
Accumulated amortization 66,570 66,837
Net carrying amount $ 0 $ 33