v3.26.3
Operating leases - Narrative (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Lessee, Lease, Description [Line Items]          
Lease cost $ 18,030 $ 11,473 $ 38,559 $ 32,522  
Accelerated amortization of operating right-of-use assets 8,200 0 8,200 0  
Right-of-use assets obtained in exchange for lease obligations $ 5,700 4,100 $ 12,600 13,900  
Weighted average remaining lease term 5 years 6 months 10 days   5 years 6 months 10 days   5 years 11 months 15 days
Weighted average discount rate 3.79%   3.79%   4.04%
Operating lease liabilities, current $ 32,900   $ 32,900   $ 36,300
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Other Liabilities   Other Liabilities   Other Liabilities
Operating lease liabilities, non-current $ 97,144   $ 97,144   $ 117,122
Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization          
Lessee, Lease, Description [Line Items]          
Lease cost 2,300 1,700 5,300 4,600  
Income Statement Location [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense          
Lessee, Lease, Description [Line Items]          
Lease cost $ 15,700 $ 9,800 $ 33,300 $ 27,900