Operating income - Narrative (Details) - EUR (€) € in Thousands |
1 Months Ended | 3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|---|
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Disclosure Of Operating Income [Line Items] | |||||
| Research tax credit ("CIR") | € 1,047 | € 1,515 | € 2,017 | € 2,665 | |
| Subsidies | € 0 | € 4,096 | € 0 | € 4,121 | |
| 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 | ||||