Other receivables and assets - Narrative (Details) - EUR (€) € in Thousands |
1 Months Ended | 151 Months Ended | ||
|---|---|---|---|---|
Aug. 31, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Dec. 31, 2025 |
|
| Disclosure Of Other Receivables And Other Assets [Line Items] | ||||
| Proceeds from research tax credit | € 41,200 | |||
| Research tax credit ("CIR") | 2,137 | € 0 | ||
| Current prepaid expenses related to CRO | 441 | |||
| Current prepaid expenses related to capital increase | 888 | |||
| Current advances to suppliers | € 3,512 | |||
| 2024, Tax Year | ||||
| Disclosure Of Other Receivables And Other Assets [Line Items] | ||||
| Proceeds from research tax credit | € 5,640 | |||
| 2025, Tax Year | CIR payment received | ||||
| Disclosure Of Other Receivables And Other Assets [Line Items] | ||||
| Proceeds from research tax credit | € 3,174 | |||