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Share-based Employee Compensation, Stock Option Plans, and Deferred Compensation Plan for Directors - Narrative (Details) $ / shares in Units, $ in Millions |  |  |  |  |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2025 USD ($) shares | May 09, 2025 shares | Dec. 31, 2024 shares | May 20, 2024 shares | May 17, 2024 shares | Jun. 30, 2025 USD ($) shares | Jun. 30, 2024 USD ($) shares | Jun. 30, 2025 USD ($) shares | Jun. 30, 2024 USD ($) shares | Sep. 29, 2023 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Deferred compensation (in shares) | 122,894 |  | 125,917 |  |  |  |  | 6,166 | 4,933 |
Share-based payment arrangement, expense | $ |  |  |  |  |  | $ 0.4 | $ 0.5 | $ 0.8 | $ 0.5 |
Exercised (in shares) |  |  |  |  |  | 0 | 4,375,000 | 0 | 4,375,000 |
Closing share price (in usd per share) | $ / shares |  |  |  |  |  |  |  |  |  | $ 34.14
Share-based compensation arrangement by share-based payment award, options, grants since inception (in shares) | 900,000 |  |  |  |  | 900,000 |  | 900,000 |  |
Weighted average remaining contractual life of the Company's outstanding options |  |  |  |  |  |  |  | 4 years 9 months 18 days |  |
Weighted average remaining contractual life of the Company's exercisable options |  |  |  |  |  |  |  | 4 years 6 months |  |
Options granted (in shares) |  |  |  |  |  |  |  | 0 |  |
Minimum required percentage of shares granted that will vest |  |  |  |  |  |  |  | 0.90 |  |
Minimum |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Estimated percentage of shares granted that will vest |  |  |  |  |  |  |  | 0.50 |  |
Actual percentage of shares granted that will vest |  |  |  |  |  |  |  | 0.90 |  |
Maximum |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Estimated percentage of shares granted that will vest |  |  |  |  |  |  |  | 1.50 |  |
Actual percentage of shares granted that will vest |  |  |  |  |  |  |  | 1.10 |  |
Common stock |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Due to directors' deferred compensation plan (in shares) |  |  |  |  |  |  |  | 9,189 | 7,970 |
Employee Stock Option |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Expiration period |  |  |  |  |  |  |  | 10 years |  |
Share-based payment arrangement, expense | $ |  |  |  |  |  | $ 0.1 | $ 0.2 | $ 0.3 | $ 0.4 |
Future expense | $ | $ 0.7 |  |  |  |  | 0.7 |  | $ 0.7 |  |
Employee Stock Option | Officers |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  |  |  |  | 4 years |  |
Restricted Stock |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Share-based payment arrangement, expense | $ |  |  |  |  |  | 0.3 | $ 0.1 | $ 0.5 | $ 0.1 |
Future expense | $ | 5.3 |  |  |  |  | 5.3 |  | $ 5.3 |  |
Restricted stock granted (in shares) |  |  |  |  |  |  |  | 87,400 |  |
Restricted Stock | Officers |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  | 5 years |  |  |  |  |
Options granted (in shares) |  | 119,000 |  |  | 117,000 |  |  |  |  |
Restricted Stock | Director |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  |  |  |  | 3 years |  |
Restricted Stock | Director | Non-employee |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Options granted (in shares) |  | 16,000 |  |  |  |  |  |  |  |
Restricted stock granted (in shares) |  |  |  | 18,000 |  |  |  |  |  |
Performance Shares |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Future expense | $ | $ 4.6 |  |  |  |  | $ 4.6 |  | $ 4.6 |  |

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