v3.26.3
Financial liabilities - Disclosure of remaining contractual maturities of financial liabilities (Details) - EUR (€)
€ in Thousands
Sep. 02, 2022
Jun. 30, 2026
Dec. 31, 2025
Jun. 30, 2025
Dec. 31, 2024
Disclosure of maturity analysis for derivative financial liabilities [line items]          
Royalty certificates   € 0 € 30,237    
Royalty certificates, undiscounted cash flows     0    
Lease liabilities   1,212 1,856 € 1,876 € 2,363
Gross lease liabilities   1,238 1,906    
Total financial liabilities   1,212 32,093    
Financial liabilities, undiscounted cash flows   1,238 1,906    
LESS THAN 1 YEAR          
Disclosure of maturity analysis for derivative financial liabilities [line items]          
Royalty certificates, undiscounted cash flows     0    
Gross lease liabilities   1,096 1,340    
Financial liabilities, undiscounted cash flows   1,096 1,340    
FROM 1 TO 2 YEARS          
Disclosure of maturity analysis for derivative financial liabilities [line items]          
Royalty certificates, undiscounted cash flows     0    
Gross lease liabilities   51 450    
Financial liabilities, undiscounted cash flows   51 450    
FROM 2 TO 5 YEARS          
Disclosure of maturity analysis for derivative financial liabilities [line items]          
Royalty certificates, undiscounted cash flows     0    
Gross lease liabilities   91 116    
Financial liabilities, undiscounted cash flows   91 116    
LONGER THAN 5 YEARS          
Disclosure of maturity analysis for derivative financial liabilities [line items]          
Royalty certificates, undiscounted cash flows     0    
Gross lease liabilities   0 0    
Financial liabilities, undiscounted cash flows   € 0 € 0    
Royalty certificates          
Disclosure of maturity analysis for derivative financial liabilities [line items]          
Royalty certificate, percentage of future sales 2.00%        
Royalty certificate, maximum amount € 172,100