v3.25.2
Income taxes (Details) - EUR (€)
€ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Income Taxes          
Current tax liabilities € 0   € 0   € 0
Tax expense (income), continuing operations € 18 € (200) € 18 € (197)