v3.26.3
Loss per share (Details) - EUR (€)
€ / shares in Units, € in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Earnings per share [abstract]        
Weighted average number of outstanding shares, basic loss per share (in shares) 79,647,974 63,440,023 79,274,779 63,409,688
Weighted average number of outstanding shares, diluted loss per share (in shares) 79,647,974 63,440,023 79,274,779 63,409,688
Profit (loss) € (117,433) € (48,414) € (165,900) € (100,784)
Basic loss per share (in euro per share) € (1.47) € (0.76) € (2.09) € (1.59)
Diluted loss per share (in euro per share) € (1.47) € (0.76) € (2.09) € (1.59)