Loss per share - Summary of outstanding shares of potentially dilutive securities (Details) - shares shares in Thousands |
6 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Loss per share | ||
| Total outstanding shares of potentially dilutive securities | 40,631 | 40,631 |
| Treasury shares | ||
| Loss per share | ||
| Antidilutive securities excluded from computation of earnings per share amount of treasury share portion | 8,651 | 8,651 |
| Warrants | ||
| Loss per share | ||
| Antidilutive securities excluded from computation of earnings per share amount of warrants portion | 31,980 | 31,980 |