v3.26.1
Equity - Narrative (Details) - EUR (€)
12 Months Ended
Jun. 25, 2025
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of classes of share capital [line items]        
Number of shares issued (in shares)   173,539,745 162,521,524  
Par value per share (in euro per share)   € 0.15    
Issue of equity   € 27,435,000 € 61,180,000  
Share issue related cost   1,239,000 € 4,041,000  
Proceeds from issue of ordinary shares   € 26,200,000    
Number of shares authorised (in shares)   16,002,496 14,003,064  
Maximum capital increase authorised, under resolutions 26, 27, 28, 29, 32 and 33 € 5,018,145      
Maximum capital increase authorised, under resolution 25 € 5,175,000      
Other reserves   € 83,318,000 € 73,203,000  
Other regulated reserves        
Disclosure of classes of share capital [line items]        
Other reserves   € 52,820,000 € 52,820,000 € 52,820,000
Ordinary shares        
Disclosure of classes of share capital [line items]        
Number of shares issued (in shares)   9,333,332    
Ordinary Shares, 1        
Disclosure of classes of share capital [line items]        
Number of shares issued (in shares)   7,666,666    
Price per share issued (in euro per share)   € 2.74    
Ordinary Shares, 2        
Disclosure of classes of share capital [line items]        
Number of shares issued (in shares)   1,666,666    
Price per share issued (in euro per share)   € 3.86