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Share-Based Compensation (Narrative) (Details) $ in Millions | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Feb. 29, 2024 shares | Feb. 28, 2019 shares | Feb. 28, 2018 executive shares | Mar. 31, 2024 USD ($) shares | Feb. 28, 2015 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of executives awarded stock options | executive |  |  | 4 |  |
Options not exercised (in shares) |  |  |  | 3 years 10 months 24 days |
Remaining term of options (in years) |  |  |  | 17,500 |
Incentive Award Plan 2015 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of shares authorized (in shares) |  |  |  |  | 4,900,000
Employee Stock Option |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Option vesting term (in years) |  |  |  | 10 years |
Employee Stock Option | Incentive Award Plan 2015 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Grants in period (in shares) |  |  | 80,000 |  |
Requisite service period |  |  | 4 years |  |
Nonvested options forfeited (in shares) |  | (10,000) |  |  |
Performance-based Phantom Stock Units | Long-Term Incentive Plan 2024 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Granted "target" award (in shares) | 196,620 |  |  |  |
Performance period (in years) |  |  |  | 3 years |
Maximum payout level based on "target" award (in percent) |  |  |  | 150.00% |
Share-based compensation expense | $ |  |  |  | $ 0.8 |
Common stock | Incentive Award Plan 2015 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of shares available for grant (in shares) |  |  |  | 4,830,000 |

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