Balance Sheet Components - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | ||
| Accrued compensation and benefits | $ 2,517 | $ 2,691 |
| Accrued operational expenses | 43 | 582 |
| Accrued restructuring costs | 155 | 2,073 |
| Accrued research, development and clinical trial expenses | $ 977 | $ 209 |
| 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 | $ 372 | $ 1,682 |
| Total accrued expenses and other current liabilities | $ 4,064 | $ 7,237 |