Research and Development Expenses (Details) - EUR (€) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Research and Development Expenses [Line Items] | ||||
| Research and development expenses | € 7,202,942 | € 10,016,870 | € 14,219,279 | € 17,318,680 |
| Personnel Cost [Member] | ||||
| Research and Development Expenses [Line Items] | ||||
| Research and development expenses | 2,300,000 | 2,200,000 | 5,000,000 | 4,700,000 |
| Research and development projects [Member] | ||||
| Research and Development Expenses [Line Items] | ||||
| Research and development expenses | € 4,400,000 | € 6,700,000 | € 8,400,000 | € 10,900,000 |