Revenue and other income - Disclosure of government financing for research expenditures (Details) - EUR (€) € in Thousands |
6 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Disclosure of disaggregation of revenue from contracts with customers [abstract] | ||
| Research tax credit | € 2,548 | € 3,189 |
| Grant | 0 | 0 |
| Government financing for research expenditures | € 2,548 | € 3,189 |