v3.25.2
Financial assets and liabilities (Details)
€ in Thousands
Jun. 30, 2025
EUR (€)
Dec. 31, 2024
EUR (€)
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets € 119,641 € 205,228
Financial assets, at fair value 91,976 176,754
Financial liabilities, at fair value € 160,067 € 162,256
Discounted cash flow    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Percentage of reasonably possible increase in unobservable input, liabilities 1.00% 1.00%
Credit spread | Discounted cash flow    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Percentage of reasonably possible increase in unobservable input, assets 1.00% 1.00%
Percentage of reasonably possible increase in unobservable input, liabilities   1.00%
LIABILITIES AT FAIR VALUE THROUGH PROFIT AND LOSS    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial liabilities, at fair value € 21,677 € 24,803
LIABILITIES AT AMORTIZED COST    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial liabilities, at fair value 138,390 137,453
Financial liabilities-non current portion    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial liabilities, at fair value 52,169 73,497
Financial liabilities-non current portion | LIABILITIES AT FAIR VALUE THROUGH PROFIT AND LOSS    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial liabilities, at fair value 3,639 3,620
Financial liabilities-non current portion | LIABILITIES AT AMORTIZED COST    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial liabilities, at fair value 48,530 69,877
Financial liabilities-current portion    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial liabilities, at fair value 50,401 44,935
Financial liabilities-current portion | LIABILITIES AT FAIR VALUE THROUGH PROFIT AND LOSS    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial liabilities, at fair value 18,038 21,183
Financial liabilities-current portion | LIABILITIES AT AMORTIZED COST    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial liabilities, at fair value 32,363 23,752
Trade payables and other current liabilities    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial liabilities, at fair value 57,497 43,824
Trade payables and other current liabilities | LIABILITIES AT FAIR VALUE THROUGH PROFIT AND LOSS    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial liabilities, at fair value 0 0
Trade payables and other current liabilities | LIABILITIES AT AMORTIZED COST    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial liabilities, at fair value 57,497 43,824
ASSETS AT FAIR VALUE THROUGH PROFIT AND LOSS    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets, at fair value 40,462 0
ASSETS AT AMORTIZED COST    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets, at fair value 51,514 176,754
Recurring fair value measurement    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets 92,457 177,537
Financial liabilities 161,402 157,828
Recurring fair value measurement | Financial liabilities-non current portion    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial liabilities € 53,503 € 69,069
Recurring fair value measurement | Kreos & Claret convertible notes (OCABSA) | Credit spread | Discounted cash flow    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Significant unobservable input, liabilities   0.0750
Recurring fair value measurement | Kreos & Claret Financing, Tranche A,B and C | Credit spread | Discounted cash flow    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Significant unobservable input, liabilities 0.1000  
Decrease in financial liabilities at fair value € 1,580 € 538
Recurring fair value measurement | PGE | Credit spread | Discounted cash flow    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Significant unobservable input, liabilities   0.0900
Decrease in financial liabilities at fair value   € 39
Recurring fair value measurement | Financial liabilities-current portion    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial liabilities 50,401 44,935
Recurring fair value measurement | Trade payables and other current liabilities    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial liabilities 57,497 43,824
Other financial assets    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets, at fair value 13,088 12,690
Other financial assets | ASSETS AT FAIR VALUE THROUGH PROFIT AND LOSS    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets, at fair value 0 0
Other financial assets | ASSETS AT AMORTIZED COST    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets, at fair value 13,088 12,690
Other financial assets | Recurring fair value measurement    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets 13,569 13,473
Other receivables and assets    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets, at fair value 17,942 19,843
Other receivables and assets | ASSETS AT FAIR VALUE THROUGH PROFIT AND LOSS    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets, at fair value 0 0
Other receivables and assets | ASSETS AT AMORTIZED COST    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets, at fair value 17,942 19,843
Other receivables and assets | Recurring fair value measurement    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets 17,942 19,843
Long-term advances made to CROs | Recurring fair value measurement | Credit spread | Discounted cash flow    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Decrease in financial assets at fair value € 186 € 236
Long-term advances made to CROs | Recurring fair value measurement | Bottom of range | Credit spread | Discounted cash flow    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Significant unobservable input, assets 0.0079 0.0104
Long-term advances made to CROs | Recurring fair value measurement | Top of range | Credit spread | Discounted cash flow    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Significant unobservable input, assets 0.0314 0.0218
Cash and cash equivalents    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets, at fair value € 60,946 € 144,221
Cash and cash equivalents | ASSETS AT FAIR VALUE THROUGH PROFIT AND LOSS    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets, at fair value 40,462 0
Cash and cash equivalents | ASSETS AT AMORTIZED COST    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets, at fair value 20,484 144,221
Cash and cash equivalents | Recurring fair value measurement    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets € 60,946 € 144,221