Inventories - Schedule of write-down provisions related to the inventory categories (Details) - EUR (€) € in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Classes of current inventories [abstract] | ||
| Raw materials | € 18,855 | € 21,728 |
| Work in progress | 21,478 | 12,600 |
| Finished goods | 4,089 | 591 |
| Purchased goods (third party products) | 40 | 591 |
| TOTAL WRITE-DOWN PROVISION | € 44,462 | € 35,510 |