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Balance Sheet Components - Schedule Of Prepaid and Other Current Assets (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Prepaid general and administrative | $ 1,641 | $ 1,316
Prepaid research and development | 717 | 4,146
Tax-related receivable | 805 | 2,622
Prepaid contract research organization expenses | 0 | 282
Other current assets | 154 | 959
Total prepaid and other current assets | $ 3,317 | $ 9,325

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