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Share-based Compensation - Narrative (Details) $ / shares in Units, $ in Thousands |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 06, 2023 shares | Jun. 10, 2022 USD ($) | Jun. 30, 2023 USD ($) | Sep. 30, 2025 USD ($) shares | Jun. 30, 2025 $ / shares shares | Sep. 30, 2024 USD ($) shares | Dec. 31, 2020 shares | Sep. 30, 2025 USD ($) shares | Sep. 30, 2024 USD ($) | Mar. 31, 2025 director | Dec. 31, 2021 USD ($) | Sep. 30, 2018 shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Compensation expense |  |  |  | $ 462 |  | $ 3,364 |  | $ 923 | $ 4,358 |  |  |
Number of directors | director |  |  |  |  |  |  |  |  |  | 2 |  |
Unrecognized compensation costs |  |  |  | 1,510 |  |  |  | 1,510 |  |  |  |
RSU |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Compensation expense |  |  |  | 403 |  | 3,179 |  | 776 | 4,011 |  |  |
Unrecognized compensation costs |  |  |  | $ 1,462 |  |  |  | $ 1,462 |  |  |  |
Preferred equity |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Account balance |  |  |  |  |  |  |  |  |  |  | $ 5,700 |
Preferred equity | Director |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Account balance |  |  |  |  |  |  |  |  |  |  | $ 3,800 |
Purchase price |  | $ 3,800 |  |  |  |  |  |  |  |  |  |
BMP Equity Incentive Plan |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of shares authorized for issuance (in shares) | shares |  |  |  | 119,000,000 |  |  |  | 119,000,000 |  |  |  |
Vesting period |  |  |  |  |  |  |  | 4 years |  |  |  |
Ben Equity Incentive Plan | RSU |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of shares authorized for issuance (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  | 160,141
Shares reserved for issuance, as a percentage of fully diluted common units outstanding |  |  |  | 15.00% |  |  |  | 15.00% |  |  |  |
Awards settleable ratio |  |  |  | 1.25 |  |  |  | 1.25 |  |  |  |
Ben Equity Incentive Plan | RSU | Director |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Units granted (in shares) | shares |  |  |  |  |  |  | 6,438 |  |  |  |  |
Increase in units granted rate | 1.25 |  |  |  |  |  |  |  |  |  |  |
Increase in units granted (in shares) | shares | 1,610 |  |  |  |  |  |  |  |  |  |  |
Compensation expense |  |  | $ 5,200 |  |  | $ 0 |  |  | 300 |  |  |
2023 Incentive Plan | Director |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  | 2 years |  |  |  |  |  |  |
Stock options granted (in shares) | shares |  |  |  |  | 100,000 |  |  |  |  |  |  |
2023 Incentive Plan | Director One |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Weighted average exercise price (in dollars per share) | $ / shares |  |  |  |  | $ 1.23 |  |  |  |  |  |  |
2023 Incentive Plan | Director Two |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Weighted average exercise price (in dollars per share) | $ / shares |  |  |  |  | $ 0.82 |  |  |  |  |  |  |
2023 Incentive Plan | Restricted Stock Units |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Shares reserved for issuance, as a percentage of fully diluted common units outstanding |  |  |  | 15.00% |  |  |  | 15.00% |  |  |  |
Units granted (in shares) | shares |  |  |  |  |  | 817,619 |  |  |  |  |  |
Percentage of common units |  |  |  |  |  |  |  | 15.00% |  |  |  |
Weighted average grant date fair value amount |  |  |  |  |  | $ 2,400 |  |  | $ 2,400 |  |  |
2023 Incentive Plan | Restricted Stock Units | Director |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  | 1 year |  |  |  |  |  |  |
2023 Incentive Plan | Restricted Stock Units | Director One |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Units granted (in shares) | shares |  |  |  |  | 138,212 |  |  |  |  |  |  |
Granted (in dollars per share) | $ / shares |  |  |  |  | $ 0.97 |  |  |  |  |  |  |
2023 Incentive Plan | Restricted Stock Units | Director Two |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Units granted (in shares) | shares |  |  |  |  | 207,317 |  |  |  |  |  |  |
Granted (in dollars per share) | $ / shares |  |  |  |  | $ 0.78 |  |  |  |  |  |  |

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