Prepaid Expenses, Other Current Assets and Other Noncurrent Assets - Summary of Prepaid Expenses and Other Noncurrent Assets (Detail) - USD ($) $ in Thousands |
Jun. 30, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Prepaid Expense and Other Assets, Noncurrent [Abstract] | ||
| Prepaid external research and development - long term | $ 570 | $ 116 |
| Total other noncurrent assets | $ 570 | $ 116 |