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Revenue - Deferred revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Revenue |  |  |  |
Balance, beginning of the period | $ 129,742 | $ 174,011 | $ 138,174 | $ 210,885
Deferral of revenue | 27,991 | 31,544 | 48,740 | 69,938
Other adjustments |  |  | (2,272) | (4,716)
Recognition of deferred revenue | (28,813) | (41,529) | (55,722) | (112,081)
Balance, end of the period | $ 128,920 | $ 164,026 | $ 128,920 | $ 164,026

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