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Prepaid Expenses and Other Current Assets - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands | Mar. 31, 2026 | Dec. 31, 2025
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Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |  |
UK R&D tax credit | $ 15,130 | $ 15,387
Prepaid research and development | 18,920 | 17,102
Prepaid income tax | 3,099 | 3,434
Other current assets | 7,329 | 5,580
Prepaid expense and other current assets | $ 44,478 | $ 41,503

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