v3.26.1
Related Party Transactions - Schedule of Shares Issued and Held by Related Parties (Details) - EUR (€)
€ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Directors and former directors [Member]    
Schedule of Shares Issued and Held by Related Parties [Line Items]    
Shares held, related parties 63,250 33,280
Carrying Value, related parties € 5,482 € 557
Directors that are also Strategic Advisors [Member]    
Schedule of Shares Issued and Held by Related Parties [Line Items]    
Shares held, related parties 894,790
Carrying Value, related parties € 152,975
Affiliates of directors and former directors [Member]    
Schedule of Shares Issued and Held by Related Parties [Line Items]    
Shares held, related parties 1,377,136 69,600
Carrying Value, related parties € 119,393 € 2,995
Officers and former officers [Member]    
Schedule of Shares Issued and Held by Related Parties [Line Items]    
Shares held, related parties
Carrying Value, related parties € 2,345
Other related parties [member]    
Schedule of Shares Issued and Held by Related Parties [Line Items]    
Shares held, related parties 204,424 22,000
Carrying Value, related parties € 33,485 € 1,608