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Share-Based Compensation - Summary (Details) - USD ($) shares in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Share-Based Compensation |  |  |
Share-based compensation expense | $ 16.5 | $ 15.8 | $ 15.8
Common shares available for issuance | 0.4 |  |
Restricted Stock | General and administrative and research and engineering expenses |  |  |
Share-Based Compensation |  |  |
Share-based compensation expense | $ 16.5 | $ 15.8 | $ 15.8
Performance based restricted stock units |  |  |
Share-Based Compensation |  |  |
Performance period | 1 year |  |
Vesting period | 3 years |  |
Employee Stock Option |  |  |
Share-Based Compensation |  |  |
Vesting period | 1 year |  |
Expiration period | 10 years |  |

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