v3.26.1
Financial Debt - Financial debt related to convertible bond instrument (Details) - Convertible bonds
6 Months Ended 12 Months Ended
May 20, 2026
EUR (€)
Mar. 02, 2026
EUR (€)
Nov. 13, 2025
EUR (€)
M
€ / shares
Jun. 30, 2026
EUR (€)
Dec. 31, 2025
EUR (€)
Jun. 09, 2026
€ / shares
Disclosure of financial debt            
Notional amount     € 45,000,000      
Maturity term     3 years      
Debt Instruments Principal Amount | € / shares     € 100      
Principal Instalment Per Bond Instrument | € / shares     8.5      
Principal Instalment Per Bond Instrument Last Instalment | € / shares     6.5      
Conversion price | € / shares     € 5     € 1.48
Duration utilized in determining fair value of liabilities | M     36      
Difference between the transaction price and the fair value at initial recognition       € 8,700,000 € 8,586,000  
Principal amount of debt converted € 1,900,000 € 1,900,000        
Interest amount of debt converted € 335,000 € 246,000        
Percentage of share price 90.00% 90.00%        
First tranche            
Disclosure of financial debt            
Notional amount     € 22,500,000 € 22,500,000    
Borrowings, interest rate     6.50%      
Second tranche            
Disclosure of financial debt            
Notional amount     € 22,500,000