v3.26.1
Revenues - Disclosure of revenue by geographical markets (Details) - EUR (€)
€ in Thousands
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Disclosure of disaggregation of revenue from contracts with customers [line items]    
REVENUE TOTAL € 65,841 € 97,562
United States    
Disclosure of disaggregation of revenue from contracts with customers [line items]    
REVENUE TOTAL 18,327 23,470
Canada    
Disclosure of disaggregation of revenue from contracts with customers [line items]    
REVENUE TOTAL 12,847 14,464
Germany    
Disclosure of disaggregation of revenue from contracts with customers [line items]    
REVENUE TOTAL 8,980 14,682
Rest of World    
Disclosure of disaggregation of revenue from contracts with customers [line items]    
REVENUE TOTAL 6,331 8,442
Nordics    
Disclosure of disaggregation of revenue from contracts with customers [line items]    
REVENUE TOTAL 5,551 5,892
United Kingdom    
Disclosure of disaggregation of revenue from contracts with customers [line items]    
REVENUE TOTAL 5,444 6,863
Other Europe    
Disclosure of disaggregation of revenue from contracts with customers [line items]    
REVENUE TOTAL 4,552 7,015
France    
Disclosure of disaggregation of revenue from contracts with customers [line items]    
REVENUE TOTAL 2,879 9,670
Austria    
Disclosure of disaggregation of revenue from contracts with customers [line items]    
REVENUE TOTAL € 931 € 7,064