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Summary of Significant Accounting Policies - Schedule of Long-Lived Assets by Geographical Region (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Non-Current Assets [Line Items] |  |
Long-lived assets | $ 2,609 | $ 14,590
Switzerland |  |
Non-Current Assets [Line Items] |  |
Long-lived assets | 1,527 | 1,460
United Kingdom |  |
Non-Current Assets [Line Items] |  |
Long-lived assets | 0 | 12,133
United States |  |
Non-Current Assets [Line Items] |  |
Long-lived assets | $ 1,082 | $ 997

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- Details
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- Details
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- Details
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