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Net revenues - Schedule of Contract Cost Assets (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |  |
Opening balance |  |  | $ 197,419 |
Closing balance | $ 189,393 |  | 189,393 |
Sales incentive programs |  |  |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |  |
Opening balance | 30,773 | $ 38,230 | 34,556 | $ 41,348
Amortization | 3,243 | 5,611 | 7,348 | 11,969
Closing balance | 23,880 | 36,486 | 23,880 | 36,486
Amortization | 3,243 | 5,611 | 7,348 | 11,969
Transition activities |  |  |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |  |
Opening balance | 162,100 | 162,199 | 162,863 | 159,552
Amortization | 17,352 | 18,909 | 34,723 | 38,283
Closing balance | 165,513 | 171,012 | 165,513 | 171,012
Amortization | $ 17,352 | $ 18,909 | $ 34,723 | $ 38,283

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