v3.26.1
Summary of significant accounting policies - Schedule of maturity analysis for Group’s financial liabilities (Details) - Liquidity risk - EUR (€)
€ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Borrowings € 267,690 € 187,373
Lease liabilities 28,082 28,941
Refund liabilities 17,498 26,141
Trade payables and accruals 24,540 35,522
Tax and employee-related liabilities 12,642 13,107
Other liabilities 7 79
TOTAL 350,460 291,163
Less than 1 year    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Borrowings 17,905 20,852
Lease liabilities 2,739 2,508
Refund liabilities 10,814 19,650
Trade payables and accruals 24,540 35,522
Tax and employee-related liabilities 12,642 13,107
Other liabilities 7 79
TOTAL 68,648 91,719
Between 1 and 3 years    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Borrowings 33,439 132,489
Lease liabilities 5,572 5,203
Refund liabilities 6,684 6,491
Trade payables and accruals 0 0
Tax and employee-related liabilities 0 0
Other liabilities 0 0
TOTAL 45,696 144,183
Between 3 and 5 years    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Borrowings 215,495 33,349
Lease liabilities 5,414 5,083
Refund liabilities 0 0
Trade payables and accruals 0 0
Tax and employee-related liabilities 0 0
Other liabilities 0 0
TOTAL 220,908 38,432
Over 5 years    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Borrowings 851 683
Lease liabilities 14,357 16,147
Refund liabilities 0 0
Trade payables and accruals 0 0
Tax and employee-related liabilities 0 0
Other liabilities 0 0
TOTAL € 15,208 € 16,829