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Moderna Collaboration and License Agreement - Schedule of Changes in Deferred Revenue (Details) - USD ($) $ in Thousands | 6 Months Ended
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Jun. 30, 2025 | Jun. 30, 2024
Movement in Deferred Revenue [Roll Forward] |  |
Balance at the beginning of the period | $ 44,979 | $ 46,413
Deferral of revenue | 0 | 6,090
Recognition of deferred revenue | (3,729) | (10,594)
Balance at the end of the period | $ 41,250 | $ 41,909

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