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Stock Based Compensation - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
2017 Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Maximum shares issuable (in shares) | 43,170,000 |  |  |
Common shares reserved for issuance (in shares) | 28,796,097 | 31,367,872 |  |
2017 Plan | Non-employee director |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock issued (in shares) |  | 687,503 |  |
2017 Plan | Non-employee director | Director |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock issued (in shares) | 919,019 |  |  |
2017 Plan | Employee | Employee |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock issued (in shares) | 3,809,403 |  |  |
Restricted Stock |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Shares outstanding, unvested restricted stock (in shares) | 2,104,568 | 1,909,107 | 1,603,766 | 837,123
Non-cash compensation expense | $ 4.6 | $ 4.3 | $ 3.8 |
Unrecognized compensation expense | $ 4.5 | 5.1 |  |
Weighted average period to recognize the unrecognized compensation expense | 1 year 8 months 12 days |  |  |
Fair value of shares vested | $ 3.3 | $ 2.5 | $ 1.8 |
Shares vested (in shares) | 924,548 | 621,438 | 287,611 |
Restricted Stock | 2010 Stock Incentive Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Shares outstanding, unvested restricted stock (in shares) | 0 |  |  |
Restricted Stock | 2017 Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Shares outstanding, unvested restricted stock (in shares) | 2,104,568 | 1,909,107 |  |
Restricted Stock | 2017 Plan | Employee |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock issued (in shares) |  | 2,689,394 |  |
Performance Shares |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Fair value assumptions, expected term | 3 years |  |  |
Expected term for expected volatility rate | 3 years |  |  |
Performance Shares | 2017 Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Common shares reserved for issuance (in shares) | 6,233,373 | 6,168,886 |  |
Non-cash compensation expense | $ 6.1 | $ 5.5 | $ 5.0 |
Unrecognized compensation expense | $ 5.7 | 7.6 | $ 5.7 |
Weighted average period to recognize the unrecognized compensation expense | 1 year 6 months |  |  |
Fair value of shares vested | $ 2.6 | $ 3.7 |  |
Award vesting period | 3 years | 3 years | 3 years |
Number of consecutive trading days for Total Shareholder Return (TSR) calculation | 30 days |  |  |
Fair value assumptions, expected term | 3 years |  |  |
Shares vested (in shares) | 733,496 | 974,074 |  |
Vested shares target (in shares) | 1,074,918 | 842,792 |  |
Performance Shares | 2017 Plan | Relative TSR performance Is Less than the 30th percentile |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Award vesting rights percentage | 0.00% |  |  |
Performance Shares | 2017 Plan | Relative TSR performance Is equal to the 50th percentile |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Award vesting rights percentage | 100.00% |  |  |
RSUs |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Shares outstanding, unvested restricted stock (in shares) | 1,054,880 | 1,016,252 | 441,746 | 0
Unrecognized compensation expense | $ 2.0 | $ 2.7 | $ 1.8 |
Weighted average period to recognize the unrecognized compensation expense | 1 year 6 months |  |  |
Fair value of shares vested | $ 1.4 | $ 0.5 |  |
Requisite service period | 3 years | 3 years |  |
Shares vested (in shares) | 383,639 | 147,254 | 0 |
RSUs | 2017 Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Common shares reserved for issuance (in shares) | 1,054,880 | 1,016,252 |  |
Non-cash compensation expense | $ 2.3 | $ 1.7 | $ 0.9 |
Award vesting period | 3 years |  |  |

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