Stock-Based Compensation - Schedule of stock-based compensation (Details) - Stock Options - USD ($) $ in Thousands |
1 Months Ended | 3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|---|
Jun. 03, 2026 |
Jun. 30, 2026 |
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||||||
| Total stock-based compensation | $ 3,633 | $ 880 | $ 11,099 | $ 1,847 | ||
| Location, Statement of Income, Balance [Axis]: us-gaap:GeneralAndAdministrativeExpense | ||||||
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||||||
| Total stock-based compensation | $ 800 | 2,870 | 767 | 7,969 | 1,490 | |
| Location, Statement of Income, Balance [Axis]: us-gaap:ResearchAndDevelopmentExpense | ||||||
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||||||
| Total stock-based compensation | $ 1,100 | $ 763 | $ 113 | $ 3,130 | $ 357 | |