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STOCK BASED COMPENSATION PLANS - Narrative (Details) |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Jul. 18, 2011 | Sep. 30, 2022 USD ($) shares | Sep. 30, 2021 USD ($) | Jun. 30, 2021 USD ($) employee | Sep. 30, 2022 USD ($) shares | Sep. 30, 2021 USD ($) | Jul. 18, 2021 shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Right to grant period | 10 years |  |  |  |  |  |
Share-based compensation expense |  | $ 1,060,000 | $ 923,000 |  | $ 1,881,000 | $ 1,999,000 |
Employee affected | employee |  |  |  | 1 |  |  |
Restricted Stock |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Weighted-average vesting period |  |  |  |  | 2 years 7 months 6 days |  |
Share-based compensation expense |  | 1,100,000 | $ 900,000 |  | $ 1,900,000 | $ 2,000,000 |
Incremental compensation cost |  |  |  | $ 600,000 |  |  |
Non-vested restricted stock awards |  | $ 9,100,000 |  |  | $ 9,100,000 |  |
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) | shares |  |  |  |  |  |  | 1,200,000
Remaining number of shares authorized (in shares) | shares |  | 1,003,458 |  |  | 1,003,458 |  |
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) | shares |  | 120,000 |  |  | 120,000 |  |
Remaining number of shares authorized (in shares) | shares |  | 107,895 |  |  | 107,895 |  |
Term of service |  |  |  |  | 1 year |  |
Weighted-average vesting period |  |  |  |  | 1 year |  |
Grant market value |  | $ 50,000 |  |  | $ 50,000 |  |
Share-based compensation expense |  | $ 35,500 |  |  | $ 35,500 |  |

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