Other Current & Non Current Assets - Additional Information (Details) - USD ($) $ in Millions |
1 Months Ended | 12 Months Ended | |
|---|---|---|---|
Oct. 28, 2026 |
Dec. 31, 2025 |
Sep. 30, 2026 |
|
| Schedule Of Other Assets [Line Items] | |||
| Prepaid right-of-use-asset | $ 3.9 | $ 7.4 | |
| Research tax credit, (Crédit d’Impôt Recherche) payment received | $ 4.3 | ||
| Credit notes issued by CROs | 1.4 | ||
| Subsequent Event | |||
| Schedule Of Other Assets [Line Items] | |||
| Research tax credit, (Crédit d’Impôt Recherche) payment received | $ 5.6 | ||
| Directors and officers | |||
| Schedule Of Other Assets [Line Items] | |||
| Prepaid insurance | 1.7 | ||
| Peanut Source Material Agreement, Fareva La Vallée | |||
| Schedule Of Other Assets [Line Items] | |||
| Prepaid right-of-use-asset | 4.1 | ||
| Peanut Drug Substance Agreement, Fareva La Vallée | |||
| Schedule Of Other Assets [Line Items] | |||
| Prepaid right-of-use-asset | $ 3.3 |