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Share-Based Compensation - Textual (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Share-Based Compensation Expense and Cash Flows (Line Items) |  |  |  |
Unrecognized compensation cost related to nonvested awards net of tax Total | $ 4.9 |  |  |
Share-based payment arrangement, nonvested award, cost not yet recognized, period for recognition | 2 years 6 months |  |  |
Unrecognized compensation cost period for recognition, weighted-average, years | 7 months 6 days |  |  |
Employee Benefits and Share-based Compensation | $ 1.3 |  |  |
transition agreement |  |  |  |
Share-Based Compensation Expense and Cash Flows (Line Items) |  |  |  |
Employee Benefits and Share-based Compensation | $ 2.5 |  |  |
2017 Incentive Plan |  |  |  |
Share-Based Compensation Expense and Cash Flows (Line Items) |  |  |  |
Common stock reserved for future issuance |  |  |  | 14,000,000
Common Stock |  |  |  |
Share-Based Compensation Expense and Cash Flows (Line Items) |  |  |  |
Number of shares authorized (in shares) | 7,000,000 |  |  |
Deferred Stock Units |  |  |  |
Share-Based Compensation Expense and Cash Flows (Line Items) |  |  |  |
Award vesting period |  | 12 months |  |
Award settlement period after grant date |  | 3 years |  |
Restricted Stock Units (RSUs) |  |  |  |
Share-Based Compensation Expense and Cash Flows (Line Items) |  |  |  |
Award vesting period | 3 years |  |  |
Total fair value of restricted stock units granted | $ 3.1 | $ 16.6 | $ 19.8 |
Nonvested shares outstanding (in shares) | 1,103,828 | 1,629,956 |  |
Total fair value of restricted stock units vested | $ 3.3 | $ 5.6 | $ 40.3 |
Dividend Equivalent Units |  |  |  |
Share-Based Compensation Expense and Cash Flows (Line Items) |  |  |  |
Nonvested shares outstanding (in shares) | 7,000 |  |  |
Performance Units |  |  |  |
Share-Based Compensation Expense and Cash Flows (Line Items) |  |  |  |
Award vesting period | 3 years |  |  |
Return on invested capital period | 3 years |  |  |
Stock price measurement period | 3 years |  |  |
Payout term, percentage of change | 25.00% |  |  |
Nonvested shares outstanding (in shares) | 650,906 | 858,588 |  |
Vested performance units | 131,203 |  |  |
Shares Issued, Price Per Share | $ 3.89 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value | $ 0.5 |  |  |
Dividend Equivalent Units, Performance Shares |  |  |  |
Share-Based Compensation Expense and Cash Flows (Line Items) |  |  |  |
Nonvested shares outstanding (in shares) | 17,000 |  |  |

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