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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) |  | 12 Months Ended
--- | --- | ---
Jul. 18, 2021 | Mar. 31, 2025 USD ($) investment | Mar. 31, 2024 USD ($) investment | Mar. 31, 2023
Accounting Policies [Abstract] |  |  |  |
Cash held in money market funds |  | $ 28,100,000 | $ 18,800,000 |
FDIC uninsured amount |  | $ 43,100,000 | $ 30,700,000 |
Remaining lease term |  | 10 years 6 months |  |
Concentration Risk [Line Items] |  |  |  |
Number of PIK investments | investment |  | 5 | 5 |
Non-cash PIK interest income percent |  | 6.20% | 5.70% | 4.60%
Interest or penalties expense |  | $ 0 | $ 0 |
Restricted Stock | 2010 Plan |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Right to grant period | 10 years |  |  |
Investments on Non-accrual Status | Percentage of Total Portfolio at Fair Value | Credit risk |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Percent of total investment portfolio's fair value |  | 1.70% | 2.30% |
Investments on Non-accrual Status | Percentage of Total Portfolio at Cost | Credit risk |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Percent of total investment portfolio's fair value |  | 3.50% | 3.90% |

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