Share-based compensation - Share option awards (Details) |
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2022
shares
installment
|
Dec. 31, 2021
yr
|
|
| share-based compensation | ||
| Number of vesting installments | 4 | |
| Expected lives (years) | yr | 6.5 | |
| Equity share option awards | Graded-Vesting Method | ||
| share-based compensation | ||
| Vesting period | 4 years | |
| Number of vesting installments | 4 | |
| Expected lives (years) | 10 | |
| Equity share option awards | Cliff-Vesting Method | ||
| share-based compensation | ||
| Vesting period | 3 years | |
| Phantom share option awards | ||
| share-based compensation | ||
| Vesting period | 30 months | |
| Share options granted (in shares) | shares | 0 | |
| Minimum | Phantom share option awards | ||
| share-based compensation | ||
| Variable payout (as a percent) | 0.00% | |
| Maximum | Share option awards | ||
| share-based compensation | ||
| Exercise period | 10 years | |
| Maximum | Phantom share option awards | ||
| share-based compensation | ||
| Variable payout (as a percent) | 100.00% | |