v3.26.3
Notes to the unaudited interim condensed consolidated statement of financial position - Long-term Derivatives (Details)
1 Months Ended
Jun. 30, 2026
EUR (€)
€ / shares
shares
Jun. 12, 2026
EUR (€)
€ / shares
shares
Jun. 01, 2026
EUR (€)
€ / shares
shares
Dec. 31, 2025
EUR (€)
€ / shares
shares
Apr. 01, 2024
€ / shares
shares
Jan. 04, 2024
EUR (€)
€ / shares
shares
Nov. 28, 2022
EUR (€)
D
€ / shares
shares
Jan. 31, 2024
shares
Nov. 30, 2022
shares
Jul. 01, 2022
€ / shares
shares
Disclosure of detailed information about borrowings [line items]                    
Derivative financial liabilities | € € 13,051,000     € 119,385,000            
Lenders' warrants                    
Disclosure of detailed information about borrowings [line items]                    
Number of shares per warrant   1                
Derivative financial liabilities | € € 3,500,000 € 3,800,000                
Lenders' warrants, Tranche A and B                    
Disclosure of detailed information about borrowings [line items]                    
Number of warrants issued   1,624,196                
Lenders' warrants, Tranche C                    
Disclosure of detailed information about borrowings [line items]                    
Number of warrants issued   661,709                
Derivatives | EIB warrants                    
Disclosure of detailed information about borrowings [line items]                    
Subscription price per warrant | € / shares                   € 0.01
Threshold trading days of warrants | D             90      
Number of shares per warrant                   1
Derivatives | EIB Warrants Tranche A                    
Disclosure of detailed information about borrowings [line items]                    
Subscription price per warrant | € / shares             € 0.01      
Number of warrants issued             2,266,023   2,266,023  
Number of warrants outstanding     2,266,023 2,266,023     2,266,023      
Number of shares per warrant     6.46 6.46     1      
Stock price | € / shares     € 4.19 € 3.95     € 4.13      
Maturity (years)     8 years 6 months 8 years 10 months 24 days     12 years      
Volatility     56.80% 56.20%     68.00%      
Cap of the put option (k€) | €     € 25,000 € 25,000     € 25,000      
Unit Fair value (€) | €     29.24 26.92     4.18      
Derivative financial liabilities | €     € 66,256,000 € 61,004,000     € 9,469,000      
Derivatives | EIB Warrants Tranche B                    
Disclosure of detailed information about borrowings [line items]                    
Subscription price per warrant | € / shares         € 0.01          
Number of warrants issued         3,144,654     3,144,654    
Number of warrants outstanding     3,144,654 3,144,654   3,144,654        
Number of shares per warrant     5.05 5.05 1 1        
Stock price | € / shares     € 4.19 € 3.95   € 4.12        
Maturity (years)     9 years 7 months 6 days 10 years   12 years        
Volatility     56.80% 56.20%   62.00%        
Cap of the put option (k€) | €     € 25,000 € 25,000   € 25,000        
Unit Fair value (€) | €     19.62 18.57   3.76        
Derivative financial liabilities | €     € 61,698,000 € 58,381,000   € 11,809,000        
Derivatives | Lenders' warrants                    
Disclosure of detailed information about borrowings [line items]                    
Number of warrants outstanding 1,624,196 1,624,196                
Number of shares per warrant 1 1                
Stock price | € / shares € 3.22 € 3.42                
Maturity (years) 10 years 10 years                
Volatility 58.60% 58.90%                
Risk free rate 3.70% 3.90%                
Unit Fair value (€) | € 2.14 2.33                
Derivative financial liabilities | € € 3,476,000 € 3,784,000