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Stock Based Compensation - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2022
Restricted Stock |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Non-vested shares (in shares) | 565,125 | 549,121 | 565,125 | 549,121 | 524,570 |  |  | 526,074
Share-based compensation expense | $ 0.8 | $ 0.9 | $ 1.7 | $ 1.9 |  |  |  |
Unrecognized compensation cost | $ 4.5 | $ 5.9 | $ 4.5 | 5.9 |  |  |  |
Unrecognized compensation cost, period for recognition |  |  | 1 year 10 months 24 days |  |  |  |  |
Fair value of vested shares |  |  | $ 2.1 | $ 3.0 |  |  |  |
Requisite service period |  |  | 3 years |  |  |  |  |
Shares vested (in shares) |  |  | 246,917 | 244,015 |  |  |  |
Performance Share Awards |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Fair value, expected term |  |  | 3 years |  |  |  |  |
RSUs |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Non-vested shares (in shares) | 450,600 | 351,974 | 450,600 | 351,974 | 351,974 |  |  | 263,708
Shares vested (in shares) |  |  | 157,763 | 131,094 |  |  |  |
2017 Incentive Plan |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Maximum number of shares that may be issued (in shares) | 10,792,500 |  | 10,792,500 |  |  |  |  |
Shares available for grant (in shares) | 5,187,388 |  | 5,187,388 |  | 6,249,922 |  |  |
2017 Incentive Plan | Restricted Stock |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Non-vested shares (in shares) | 565,125 |  | 565,125 |  | 524,570 |  |  |
2017 Incentive Plan | Performance Share Awards |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Shares available for grant (in shares) | 1,879,052 |  | 1,879,052 |  | 1,802,352 |  |  |
Share-based compensation expense | $ 0.9 | $ 0.8 | $ 1.7 | $ 1.8 |  |  |  |
Unrecognized compensation cost | $ 5.4 | $ 7.8 | $ 5.4 | 7.8 |  |  |  |
Unrecognized compensation cost, period for recognition |  |  | 1 year 9 months 18 days |  |  |  |  |
Fair value of vested shares |  |  | $ 3.6 | $ 2.0 |  |  |  |
Fair value, expected term for volatility rate |  |  | 3 years |  |  |  |  |
Award vesting period |  |  |  |  |  | 3 years | 3 years |
Shares vested (in shares) |  |  | 441,973 | 161,577 |  |  |  |
Vested shares target (in shares) | 350,886 | 201,978 | 350,886 | 201,978 |  |  |  |
2017 Incentive Plan | RSUs |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Shares available for grant (in shares) | 450,600 |  | 450,600 |  | 351,974 |  |  |
Share-based compensation expense | $ 0.5 | $ 0.5 | $ 0.9 | $ 0.9 |  |  |  |
Unrecognized compensation cost | $ 3.4 | $ 3.3 | $ 3.4 | 3.3 |  |  |  |
Unrecognized compensation cost, period for recognition |  |  | 2 years |  |  |  |  |
Fair value of vested shares |  |  | $ 1.3 | $ 1.4 |  |  |  |
Requisite service period |  |  | 3 years |  |  |  |  |
Shares vested (in shares) |  |  | 157,763 | 131,094 |  |  |  |
2017 Incentive Plan | Share-Based Payment Arrangement, Employee | Restricted Stock |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Shares issued (in shares) |  |  |  |  | 1,204,781 |  |  |
2017 Incentive Plan | Director | Share-Based Payment Arrangement, Nonemployee |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Shares issued (in shares) |  |  | 301,472 |  | 301,472 |  |  |
2017 Incentive Plan | Employee | Share-Based Payment Arrangement, Employee |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Shares issued (in shares) |  |  | 1,492,253 |  |  |  |  |

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