| Line Item | Dec 31, 2025 | Dec 31, 2024 | Dec 31, 2023 | Dec 31, 2022 | Dec 31, 2021 | Dec 31, 2020 | Dec 31, 2019 | Dec 31, 2018 | Dec 31, 2017 |
|---|---|---|---|---|---|---|---|---|---|
| Profit or loss [abstract] | |||||||||
| Revenues | |||||||||
| Cost of sales | |||||||||
| Gross profit | |||||||||
| Marketing and sales expenses | |||||||||
| Research and development expenses | |||||||||
| General and administrative expenses | |||||||||
| Other income | |||||||||
| Other expenses | |||||||||
| Operating result | |||||||||
| Finance income | |||||||||
| Finance expenses | |||||||||
| Foreign exchange result | |||||||||
| Other financial result | |||||||||
| Income taxes | |||||||||
| Loss for the period | |||||||||
| Other comprehensive income (loss) that may be reclassified to profit or loss in subsequent periods: | |||||||||
| Exchange differences on translation of foreign currency | |||||||||
| TOTAL COMPREHENSIVE LOSS | |||||||||
| Share information | |||||||||
| Loss per share (basic) (in Euro per share) | |||||||||
| Loss per share (diluted) (in Euro per share) |