Share-based compensation - Options (Details) - $ / shares |
3 Months Ended | 9 Months Ended | ||
---|---|---|---|---|
Sep. 30, 2020 |
Sep. 30, 2019 |
Sep. 30, 2020 |
Sep. 30, 2019 |
|
Share-based compensation | ||||
Number of options granted (in shares) | 1,882,966 | 3,733,359 | 14,851,182 | 15,477,255 |
Weighted average fair value (in dollars per share) | $ 1.25 | $ 0.31 | $ 0.57 | $ 0.48 |
Number of additional options with a nominal exercise price granted | 571,320 | 743,292 | 7,410,136 | 7,700,658 |
Weighted average fair value of RSU-style options granted | $ 1.70 | $ 0.51 | $ 0.78 | $ 0.89 |
X | ||||||||||
- 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.
|
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. No definition available.
|
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://fasb.org/us-gaap/role/ref/legacyRef
|