Fair Value Measurements - Summary of Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands |
Sep. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Level 3 Financial liabilities: | ||
| SAFE liability | $ 0 | $ 11,715 |
| Level 1 | ||
| Level 1 Financial assets: | ||
| Equity securities (included as short term investments) | 60,192 | 0 |
| Money market funds (included in cash and cash equivalents) | 7,144 | 0 |
| Level 3 | ||
| Level 3 Financial liabilities: | ||
| Warrant liabilities | 7,238 | 4,433 |
| SAFE liability | 0 | 11,715 |
| Stock-based compensation warrant liability (included in Other non-current liabilities) | $ 522 | $ 303 |