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Equity-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | May 03, 2023 | May 02, 2023 | May 04, 2022 | May 03, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Granted (in shares) | 0 | 0 | 0 |  |  |  |
Market price of common stock, per share | $ 78.98 |  |  |  |  |  |
Unrecognized compensation cost | $ 13.1 |  |  |  |  |  |
Weighted average cost recognition period, in years | 2 years |  |  |  |  |  |
Accrued equity based compensation | $ 20.0 | $ 15.4 |  |  |  |  |
Grant of options outstanding (in shares) | 1 |  |  |  |  |  |
Maximum |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Typical vesting period, in years | 4 years |  |  |  |  |  |
Performance stock units (1) |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Shares awarded (in shares) | 85,323 |  |  |  |  |  |
Forfeited in period (in shares) | 18,729 |  |  |  |  |  |
Performance stock units outstanding (in shares) | 136,246 | 211,368 |  |  |  |  |
Performance stock units (1) | Maximum |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Award performance period |  | 3 years |  |  |  |  |
Restricted stock units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Shares awarded (in shares) | 99,820 |  |  |  |  |  |
Forfeited in period (in shares) | 24,908 |  |  |  |  |  |
Performance stock units outstanding (in shares) | 232,970 | 235,370 |  |  |  |  |
Accrued equity based compensation | $ 17.3 | $ 13.4 |  |  |  |  |
2015 Equity Incentive Plan |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Number of shares available for issuance under the Plan | 885,000 |  |  |  |  |  |
Non-Employee Directors Plan |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Number of shares available for issuance under the Plan | 86,000 |  |  |  |  |  |
Non-Employee Directors Plan | Common Stock |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Number of shares authorized |  |  |  |  |  | 200,000 | 100,000
Management Stock Purchase Plan | Restricted stock units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Share-based Compensation Arrangement By Share-based Payment Award, Average Company Stock Price, Measurement Period | 200 days |  |  |  |  |  |
Amended 2018 Plan | Common Stock |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Number of shares authorized |  |  |  | 1,550,000 | 1,000,000 |  |
2015 Plan | Common Stock |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Number of shares available for issuance under the Plan |  |  |  | 81,707 |  |  |
Accrued Expenses, Current |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Accrued equity based compensation | $ 2.0 | 2.3 |  |  |  |  |
Non Current Liabilities |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Accrued equity based compensation | $ 18.0 | $ 13.1 |  |  |  |  |

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