Segment Reporting - Schedule of Total Non-Current Assets of Both Reportable Segments (Details) - EUR (€) € in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|---|
| Schedule of Total Non-Current Assets of Both Reportable Segments [Line Items] | |||
| Total non-current assets | € 21,768 | € 23,689 | € 30,188 |
| Europe [Member] | |||
| Schedule of Total Non-Current Assets of Both Reportable Segments [Line Items] | |||
| Total non-current assets | 62,607 | 64,414 | 78,109 |
| North America [Member] | |||
| Schedule of Total Non-Current Assets of Both Reportable Segments [Line Items] | |||
| Total non-current assets | 754 | 868 | 6,328 |
| Eliminations [Member] | |||
| Schedule of Total Non-Current Assets of Both Reportable Segments [Line Items] | |||
| Total non-current assets | € (41,593) | € (41,593) | € (41,593) |