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STOCK BASED COMPENSATION PLANS - Narrative (Details) - USD ($) |  |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | ---
Jul. 24, 2025 | Jul. 18, 2021 | Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Jul. 23, 2025
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Share-based compensation expense |  |  | $ 1,270,000 | $ 1,538,000 | $ 2,413,000 | $ 2,762,000 |
Restricted Stock |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Weighted-average vesting period |  |  |  |  | 2 years 10 months 24 days |  |
Share-based compensation expense |  |  | 1,300,000 | 1,500,000 | $ 2,400,000 | 2,800,000 |
Non-vested restricted stock awards |  |  | $ 12,800,000 |  | $ 12,800,000 |  |
Restricted Stock | 2010 Plan |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Vesting period |  |  |  |  | 4 years |  |
Right to grant period |  | 10 years |  |  |  |  |
Restricted Stock | 2021 Employee Plan |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Available for issuance (in shares) | 3,050,000 | 1,200,000 |  |  |  |  | 1,200,000
Number of shares increases in available for issuance (in shares) | 1,850,000 |  |  |  |  |  |
Remaining number of shares authorized (in shares) |  |  | 2,014,204 |  | 2,014,204 |  |
Restricted Stock | Non-Employee Director Plan |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Vesting period |  |  |  |  | 1 year |  |
Available for issuance (in shares) |  |  | 120,000 |  | 120,000 |  |
Remaining number of shares authorized (in shares) |  |  | 75,280 |  | 75,280 |  |
Term of service |  |  |  |  | 1 year |  |
Grant market value |  |  | $ 50,000 |  | $ 50,000 |  |
Weighted-average vesting period |  |  |  |  | 1 year |  |
Share-based compensation expense |  |  | $ 100,000 | $ 100,000 | $ 100,000 | $ 100,000 |

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