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Disclosure on Individual Items of the Consolidated Financial Statements - Schedule of Inventories (Details) - EUR (€)
€ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Schedule of Inventories [Line Items]    
Finished goods € 30,950 € 15,245
Work in progress 5,019 9,402
Raw materials 42,230 53,010
Total 78,198 77,657
Write-downs inventories (27,188) (13,991)
Write-downs finished goods [Member]    
Schedule of Inventories [Line Items]    
Write-downs inventories (9,206) (181)
Write-downs work in progress [Member]    
Schedule of Inventories [Line Items]    
Write-downs inventories (1,318) (808)
Write-downs inventories [Member]    
Schedule of Inventories [Line Items]    
Write-downs inventories € (16,664) € (13,003)