Trade payables and others (Details) € in Thousands |
Jun. 30, 2026
EUR (€)
loan_agreement
|
Dec. 31, 2025
EUR (€)
|
Aug. 31, 2022
loan
|
|---|---|---|---|
| Disclosure of trade payables and others [Line Items] | |||
| Suppliers (excluding payables related to capital expenditures) | € 5,430 | € 7,475 | |
| Tax and employee-related payables | 5,145 | 6,546 | |
| Other payables | 694 | 1,021 | |
| Trade payables and others (excluding payables related to capital expenditures) | 11,269 | 15,042 | |
| Payables related to capital expenditures | 0 | 0 | |
| Payables and others | € 11,269 | € 15,042 | |
| State guaranteed loan, Societe Generale and BNP Paribas | |||
| Disclosure of trade payables and others [Line Items] | |||
| Borrowing, number of loan agreement | 2 | 2 |