Share-based compensation - Options (Details) - $ / shares |
3 Months Ended | |
|---|---|---|
Mar. 31, 2023 |
Mar. 31, 2022 |
|
| Share-based compensation | ||
| Number of options over ordinary shares granted (in shares) | 21,755,328 | 22,876,464 |
| Weighted average fair value of ordinary shares options (in dollars per share) | $ 0.25 | $ 0.43 |
| Number of additional options with a nominal exercise price granted | 19,866,912 | 17,688,432 |
| Weighted average fair value of options with a nominal exercise price | $ 0.32 | $ 0.59 |
| X | ||||||||||
- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. No definition available.
|
| X | ||||||||||
- Definition Gross number of share options (or share units) granted with nominal exercise price during the period. No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Gross number of share options (or share units) granted during the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|