Related-party transactions - Disclosure of borrowings related to research tax credit outstanding (Details) - EUR (€) € in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Disclosure of transactions between related parties [line items] | ||
| Borrowings | € 179,167 | € 187,373 |
| BPI payable relating to Research tax credit 2022 | BPI France | ||
| Disclosure of transactions between related parties [line items] | ||
| Borrowings | 1,198 | |
| BPI payable relating to Research tax credit 2023 | BPI France | ||
| Disclosure of transactions between related parties [line items] | ||
| Borrowings | 910 | |
| BPI payable relating to Research tax credit 2024 | BPI France | ||
| Disclosure of transactions between related parties [line items] | ||
| Borrowings | € 1,036 |