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Stock-Based Compensation - Narrative (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2023 | Aug. 31, 2021 | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Mar. 31, 2023
Minimum |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Initial grant percentage based on performance targets |  |  |  |  | 0.00% |  |
Maximum |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Initial grant percentage based on performance targets |  |  |  |  | 200.00% |  |
Restricted Stock |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Non-vested restricted shares issued and outstanding (in shares) |  |  | 725,529 |  | 725,529 |  | 752,829
Restricted Stock | Minimum |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Vesting period |  |  |  |  | 1 year |  |
Restricted Stock | Maximum |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Vesting period |  |  |  |  | 3 years |  |
RSUs |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Issued shares (in shares) |  |  |  |  | 85,380 |  |
Compensation expense |  |  | $ 0.1 | $ 0.0 | $ 0.1 | $ 0.0 |
Total grant-date fair value |  |  | 0.9 | 0.0 | $ 1.1 | 0.0 |
RSUs | Minimum |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Vesting period |  |  |  |  | 1 year |  |
RSUs | Maximum |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Vesting period |  |  |  |  | 3 years |  |
PSUs |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Issued shares (in shares) |  |  |  |  | 12,000 |  |
Compensation expense |  |  | 0.0 | 0.0 | $ 0.0 | 0.0 |
Total grant-date fair value |  |  | $ 0.0 | 0.0 | $ 0.1 | 0.0 |
PSUs | Share-Based Payment Arrangement, Tranche One |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Vesting period |  |  |  |  | 1 year |  |
PSUs | Share-Based Payment Arrangement, Tranche Two |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Vesting period |  |  |  |  | 3 years |  |
2016 Employee Plan | Restricted Stock |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Restricted common shares issued (in shares) |  |  |  |  | 962,240 |  |
Non-vested restricted shares issued and outstanding (in shares) |  |  | 625,247 |  | 625,247 |  | 684,200
2016 Employee Plan | Restricted Stock | Chief Executive Officer |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Issued shares (in shares) |  | 90,000 |  |  |  |  |
2016 Employee Plan | Performance Restricted Stock | Chief Executive Officer |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Issued shares (in shares) |  | 510,000 |  |  |  |  |
Hurdle period |  | 3 years |  |  |  |  |
2022 Employee Plan | Restricted Stock |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Restricted common shares issued (in shares) |  |  |  |  | 75,742 |  |
Restricted stock issued, net of forfeitures (in shares) |  |  | 0 |  |  |  |
Non-vested restricted shares issued and outstanding (in shares) |  |  | 75,742 |  | 75,742 |  | 0
2022 Employee Plan | RSUs |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Issued shares (in shares) |  |  |  |  | 55,380 |  |
2022 Employee Plan | RSUs | Chief Financial Officer |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Issued shares (in shares) | 11,750 |  |  |  |  |  |
Vesting period | 3 years |  |  |  |  |  |
Initial grant percentage based on performance targets | 33.33333% |  |  |  |  |  |
2022 Employee Plan | RSUs | Chief Financial Officer | Fiscal Year 2023 |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Issued shares (in shares) | 3,750 |  |  |  |  |  |
2022 Employee Plan | RSUs | Chief Financial Officer | Fiscal Year 2024 |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Issued shares (in shares) | 8,000 |  |  |  |  |  |
2022 Employee Plan | PSUs |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Issued shares (in shares) |  |  |  |  | 12,000 |  |
2022 Employee Plan | PSUs | Chief Financial Officer |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Issued shares (in shares) | 8,000 |  |  |  |  |  |
Vesting period | 3 years |  |  |  |  |  |
2022 Employee Plan | PSUs | Chief Financial Officer | Share-Based Payment Arrangement, Tranche One |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Issued shares (in shares) | 8,000 |  |  |  |  |  |
Initial grant percentage based on performance targets | 100.00% |  |  |  |  |  |
2022 Employee Plan | PSUs | Chief Financial Officer | Share-Based Payment Arrangement, Tranche Two |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Issued shares (in shares) | 4,000 |  |  |  |  |  |
Initial grant percentage based on performance targets | 50.00% |  |  |  |  |  |
2022 Employee Plan | PSUs | Chief Financial Officer | Share-Based Payment Arrangement, Tranche Three |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Issued shares (in shares) | 2,000 |  |  |  |  |  |
Initial grant percentage based on performance targets | 25.00% |  |  |  |  |  |
2022 Employee Plan | PSUs | Chief Financial Officer | Share-Based Payment Arrangement, Tranche Four |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Issued shares (in shares) | 2,000 |  |  |  |  |  |
Initial grant percentage based on performance targets | 0.00% |  |  |  |  |  |
2015 Director Plan | Restricted Stock |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Restricted common shares issued (in shares) |  |  |  |  | 225,251 |  |
Restricted stock issued, net of forfeitures (in shares) |  |  | 0 |  |  |  |
Non-vested restricted shares issued and outstanding (in shares) |  |  | 24,540 |  | 24,540 |  | 68,629
2015 Director Plan | RSUs |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Issued shares (in shares) |  |  | 30,000 |  | 30,000 |  |
2016 Employee Plan and 2015 Director Plan |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Compensation expense |  |  | $ 1.7 | 1.7 | $ 3.5 | 3.2 |
2016 Employee Plan and 2015 Director Plan | Restricted Stock |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Unrecognized compensation cost |  |  | $ 7.7 | $ 12.2 | $ 7.7 | $ 12.2 |
Non-vested restricted shares issued and outstanding (in shares) |  |  | 725,529 | 776,928 | 725,529 | 776,928 |
2016 Employee Plan and 2015 Director Plan | Restricted Stock | Minimum |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Recognition period |  |  |  |  | 1 year |  |
2016 Employee Plan and 2015 Director Plan | Restricted Stock | Maximum |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Recognition period |  |  |  |  | 3 years |  |

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