v3.25.2
Financial liabilities - Disclosure of the main data and assumptions, Kreos / Claret minimum return indemnifications (Details) - Kreos/Claret Minimum Return Indemnifications
€ in Thousands
Jun. 30, 2025
EUR (€)
Dec. 31, 2024
EUR (€)
Tranche B    
Disclosure of detailed information about borrowings [line items]    
Fair value of other equity instruments € 2,564 € 2,636
Tranche C    
Disclosure of detailed information about borrowings [line items]    
Fair value of other equity instruments € 1,075 € 984
Final redemption scenario probability | Amortized cost (EIR method) | Tranche B    
Disclosure of detailed information about borrowings [line items]    
Significant unobservable input, liabilities 0.95 0.95
Final redemption scenario probability | Amortized cost (EIR method) | Tranche C    
Disclosure of detailed information about borrowings [line items]    
Significant unobservable input, liabilities 0.95 0.95
Minimal return | Amortized cost (EIR method) | Tranche B    
Disclosure of detailed information about borrowings [line items]    
Significant unobservable input, liabilities 1.40 1.40
Minimal return | Amortized cost (EIR method) | Tranche C    
Disclosure of detailed information about borrowings [line items]    
Significant unobservable input, liabilities 1.30 1.30
Discount rate | Amortized cost (EIR method) | Tranche B    
Disclosure of detailed information about borrowings [line items]    
Significant unobservable input, liabilities 0.16 0.08
Discount rate | Amortized cost (EIR method) | Tranche C    
Disclosure of detailed information about borrowings [line items]    
Significant unobservable input, liabilities 0.16 0.08
Probability-weighted present value of shortfall payment, final redemption | Amortized cost (EIR method) | Tranche B    
Disclosure of detailed information about borrowings [line items]    
Significant unobservable input, liabilities 2,595 2,635
Probability-weighted present value of shortfall payment, final redemption | Amortized cost (EIR method) | Tranche C    
Disclosure of detailed information about borrowings [line items]    
Significant unobservable input, liabilities 1,245 1,160
Probability-weighted present value of shortfall payment, tender offer | Amortized cost (EIR method) | Tranche B    
Disclosure of detailed information about borrowings [line items]    
Significant unobservable input, liabilities 133 136
Probability-weighted present value of shortfall payment, tender offer | Amortized cost (EIR method) | Tranche C    
Disclosure of detailed information about borrowings [line items]    
Significant unobservable input, liabilities 45 43
Final redemption, probability-weighted fair value with MRI | Amortized cost (EIR method) | Tranche B    
Disclosure of detailed information about borrowings [line items]    
Significant unobservable input, liabilities 222 104
Final redemption, probability-weighted fair value with MRI | Amortized cost (EIR method) | Tranche C    
Disclosure of detailed information about borrowings [line items]    
Significant unobservable input, liabilities 927 684
Final redemption, probability-weighted fair value without MRI | Amortized cost (EIR method) | Tranche B    
Disclosure of detailed information about borrowings [line items]    
Significant unobservable input, liabilities 386 241
Final redemption, probability-weighted fair value without MRI | Amortized cost (EIR method) | Tranche C    
Disclosure of detailed information about borrowings [line items]    
Significant unobservable input, liabilities 1,142 903
Total fair value of MRI, final redemption | Amortized cost (EIR method) | Tranche B    
Disclosure of detailed information about borrowings [line items]    
Significant unobservable input, liabilities 2,431 2,499
Total fair value of MRI, final redemption | Amortized cost (EIR method) | Tranche C    
Disclosure of detailed information about borrowings [line items]    
Significant unobservable input, liabilities 1,030 941
Total fair value of MRI, tender offer | Amortized cost (EIR method) | Tranche B    
Disclosure of detailed information about borrowings [line items]    
Significant unobservable input, liabilities 133 136
Total fair value of MRI, tender offer | Amortized cost (EIR method) | Tranche C    
Disclosure of detailed information about borrowings [line items]    
Significant unobservable input, liabilities 45 43