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Goodwill and intangible assets - Schedule of Goodwill and Intangible Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]    
Gross carrying amount $ 852,152 $ 868,307
Accumulated amortization 588,481 510,833
Net carrying amount 263,671 357,474
Indefinite-lived intangible assets:    
Total intangible assets 430,374 524,350
Goodwill 530,028 533,876
Mastheads    
Indefinite-lived intangible assets:    
Nonamortized intangible assets 166,703 166,876
Advertiser relationships    
Finite-Lived Intangible Assets [Line Items]    
Gross carrying amount 445,356 446,609
Accumulated amortization 279,176 236,168
Net carrying amount 166,180 210,441
Other customer relationships    
Finite-Lived Intangible Assets [Line Items]    
Gross carrying amount 89,106 101,819
Accumulated amortization 59,198 56,601
Net carrying amount 29,908 45,218
Subscriber relationships    
Finite-Lived Intangible Assets [Line Items]    
Gross carrying amount 250,820 251,099
Accumulated amortization 183,895 155,528
Net carrying amount 66,925 95,571
Other intangible assets    
Finite-Lived Intangible Assets [Line Items]    
Gross carrying amount 66,870 68,780
Accumulated amortization 66,212 62,536
Net carrying amount $ 658 $ 6,244