Share-based compensation - Options (Details) - $ / shares |
3 Months Ended | |
|---|---|---|
Mar. 31, 2021 |
Mar. 31, 2020 |
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| Share-based compensation | ||
| Number of options granted (in shares) | 14,803,056 | 10,229,280 |
| Weighted average fair value (in dollars per share) | $ 0.75 | $ 0.51 |
| Number of additional options with a nominal exercise price granted | 12,663,792 | 6,060,696 |
| Weighted average fair value of RSU-style options granted | $ 1.03 | $ 0.74 |
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the nominal exercise price. No definition available.
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- Definition Gross number of share options (or share units) granted with nominal exercise price during the period. No definition available.
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- References No definition available.
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- Definition Gross number of share options (or share units) granted during the period. No definition available.
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- 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://fasb.org/us-gaap/role/ref/legacyRef
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