Share-Based Compensation Expenses (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Share-Based Compensation Expenses | ||||
| Share-based compensation expense | $ 2.8 | $ 1.8 | $ 8.5 | $ 4.6 |
| Stock options and restricted share units | ||||
| Share-Based Compensation Expenses | ||||
| Share-based compensation expense | 1.7 | 1.5 | 3.1 | 2.9 |
| Deferred share units | ||||
| Share-Based Compensation Expenses | ||||
| Share-based compensation expense | $ 1.1 | $ 0.3 | $ 5.4 | $ 1.7 |