Balance Sheet Components - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | ||
| Prepaid general and administrative | $ 941 | $ 1,170 |
| Prepaid research and development | 124 | 441 |
| Tax-related receivable | 28 | 848 |
| Prepaid contract research organization expenses | 276 | 431 |
| Other current assets | 143 | 148 |
| Total prepaid and other current assets | $ 1,512 | $ 3,038 |