Share-based Compensation - Share-based Compensation Expense and Valuation Information (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Share-based Compensation Expense | ||||
| Share-based compensation expense | $ 1.9 | $ 1.7 | $ 3.8 | $ 3.4 |
| Assumptions | ||||
| Increase in additional paid-in capital from reclassification of accrued compensation for converted restricted stock units | 0.4 | |||
| Selling, general and administrative expenses | ||||
| Share-based Compensation Expense | ||||
| Share-based compensation expense | 1.5 | 1.3 | 3.0 | 2.6 |
| Research and development expenses | ||||
| Share-based Compensation Expense | ||||
| Share-based compensation expense | $ 0.4 | $ 0.4 | $ 0.8 | $ 0.8 |