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Balance Sheet Components - Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Accrued compensation and benefits | $ 2,401 | $ 1,026
Accrued operational expenses | 957 | 1,412
Accrued restructuring costs | 3,453 | 3,136
Accrued research, development and clinical trial expenses | $ 406 | $ 1,833
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Total accrued expenses and other current liabilities | Total accrued expenses and other current liabilities
Operating lease liabilities, current | $ 1,761 | $ 1,750
Other current liabilities | 107 | 190
Total accrued expenses and other current liabilities | $ 9,085 | $ 9,347

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