v3.26.1
Financial assets and liabilities (Details)
€ in Thousands
 1 Months Ended
Dec. 31, 2025
EUR (€)
Mar. 31, 2026
EUR (€)
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets € 584,341 € 547,142
Financial assets, at fair value 557,595 520,353
Financial liabilities, at fair value € 141,409 € 134,993
Credit spread, measurement input | 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%
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
LIABILITIES AT AMORTIZED COST    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial liabilities, at fair value 141,409 134,993
Financial liabilities-non current portion    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial liabilities, at fair value 102,555 104,379
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 0 0
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 102,555 104,379
Financial liabilities-current portion    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial liabilities, at fair value 1,302 1,101
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 0 0
Financial liabilities-current portion | LIABILITIES AT AMORTIZED COST    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial liabilities, at fair value 1,302 1,101
Trade payables and other current liabilities    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial liabilities, at fair value 37,552 29,514
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 37,552 29,514
ASSETS AT FAIR VALUE THROUGH PROFIT AND LOSS    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets, at fair value 437,031 410,972
ASSETS AT AMORTIZED COST    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets, at fair value 120,565 109,381
Recurring fair value measurement    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets 557,226 520,335
Financial liabilities 69,644 63,725
Recurring fair value measurement | Financial liabilities-non current portion    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial liabilities 30,790 33,110
Recurring fair value measurement | Financial liabilities-current portion    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial liabilities 1,302 1,101
Recurring fair value measurement | Trade payables and other current liabilities    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial liabilities 37,552 29,514
Other financial assets    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets, at fair value 27,141 27,444
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 27,141 27,444
Other financial assets | Recurring fair value measurement    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets 26,772 27,426
Other receivables and assets    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets, at fair value 13,769 15,486
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 13,769 15,486
Other receivables and assets | Recurring fair value measurement    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets 13,769 15,486
Long-term advances made to CROs | Recurring fair value measurement | Credit spread, measurement input | Discounted cash flow    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Decrease in financial assets at fair value € 231 € 195
Long-term advances made to CROs | Recurring fair value measurement | Bottom of range | Credit spread, measurement input | Discounted cash flow    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Significant unobservable input, assets 0.0034 0.0042
Long-term advances made to CROs | Recurring fair value measurement | Top of range | Credit spread, measurement input | Discounted cash flow    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Significant unobservable input, assets 0.0131 0.0145
Cash and cash equivalents    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets, at fair value € 516,685 € 477,423
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 437,031 410,972
Cash and cash equivalents | ASSETS AT AMORTIZED COST    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets, at fair value 79,654 66,451
Cash and cash equivalents | Recurring fair value measurement    
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]    
Financial assets € 516,685 € 477,423