Loss Per Share - Summary Of Basic And Diluted Loss Per Share (Detail) - EUR (€) € / shares in Units, € in Thousands, shares in Thousands |
6 Months Ended | ||||||
|---|---|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
[1] | |||||
| Earnings per share [abstract] | |||||||
| Loss for the period | € (47,938) | € (34,476) | |||||
| Dilutive effects on earnings per share | [2] | € (2.65) | € (2.52) | ||||
| Total loss for basic and diluted earnings per share | € (47,938) | € (34,476) | |||||
| Number of shares | |||||||
| Weighted average number of ordinary shares for basic and diluted 'earnings per share (thousand shares) | 18,068 | 13,693 | |||||
| Basic And Diluted Earnings Loss Per Share [Abstract] | |||||||
| Basic losses per share (euros per share) | [2] | € (2.65) | € (2.52) | ||||
| Diluted losses per share (euros per share) | [2] | € (2.65) | € (2.52) | ||||
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