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REGISTRATION STATEMENT AND COMMON EQUITY OFFERINGS (Details) - USD ($) | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2022 | Feb. 28, 2024 | Aug. 31, 2022 | Sep. 03, 2021 | Dec. 31, 2019
Government Assistance [Line Items] |  |  |  |  |  |  |
Proceeds from issuance of common stock | $ 44,508,000 | $ 5,492,000 | $ 0 |  |  |  |
Registration Statement on Form N-2 (File No. 333-277452) |  |  |  |  |  |  |
Government Assistance [Line Items] |  |  |  |  |  |  |
Securities, aggregate value authorized |  |  |  | $ 450,000,000.0 |  |  |
Securities, remaining capacity of aggregate value authorized | 450,000,000.0 |  |  |  |  |  |
Registration Statement on Form N-2 (File No. 333-259302) |  |  |  |  |  |  |
Government Assistance [Line Items] |  |  |  |  |  |  |
Securities, aggregate value authorized |  |  |  |  |  | $ 300,000,000.0 |
Securities, remaining capacity of aggregate value authorized | 175,300,000 |  |  |  |  |  |
Common Stock ATM Program |  |  |  |  |  |  |
Government Assistance [Line Items] |  |  |  |  |  |  |
Sale of stock, aggregate offering price authorized |  |  |  |  | $ 50,000,000 |  | $ 35,000,000
Remaining capacity under the common stock ATM program | $ 0 |  |  |  |  |  |
Sale of stock, number of shares sold (in shares) | 3,097,162 | 386,482 | 0 |  |  |  |
Sale of stock, weighted-average gross price per share (in USD per share) | $ 14.37 | $ 14.21 |  |  |  |  |
Sale of stock, consideration received | $ 44,500,000 | $ 5,500,000 |  |  |  |  |
Sale of stock, weighted-average net price per share after deducting commissions and offering costs (in USD per share) | $ 14.12 | $ 14.01 |  |  |  |  |
Proceeds from issuance of common stock | $ 43,700,000 | $ 5,400,000 |  |  |  |  |

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