Other operating income - Narrative (Details) - EUR (€) € in Thousands |
1 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2024 |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Disclosure Of Operating Income [Line Items] | ||||
| Research tax credit ("CIR") | € 3,061 | € 6,651 | € 4,493 | |
| Subsidies | 0 | 4,140 | 81 | |
| Other | 0 | 23 | 47 | |
| RNP-VIR conditional advance | ||||
| Disclosure Of Operating Income [Line Items] | ||||
| Subsidies | € 1,872 | |||
| CARENA conditional advance | ||||
| Disclosure Of Operating Income [Line Items] | ||||
| Subsidies | € 2,251 | |||
| Tax Year 2021 | ||||
| Disclosure Of Operating Income [Line Items] | ||||
| Research tax credit ("CIR") | 984 | |||
| Tax Year 2022 | ||||
| Disclosure Of Operating Income [Line Items] | ||||
| Research tax credit ("CIR") | € 4,493 | |||
| Tax Year 2023 | ||||
| Disclosure Of Operating Income [Line Items] | ||||
| Research tax credit ("CIR") | € 5,668 | |||
| Tax Year 2024 | ||||
| Disclosure Of Operating Income [Line Items] | ||||
| Research tax credit ("CIR") | € 3,197 | |||