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BORROWINGS - Schedule of SBA Debentures (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2022
Debt Instrument [Line Items] |  |  |
Total interest and amortization of deferred financing costs | $ 43,088 | $ 28,873 | $ 19,924
SBA Debentures | Unsecured Debt |  |  |
Debt Instrument [Line Items] |  |  |
Interest expense and unused commitment fees | 5,418 | 2,792 | 220
Amortization of deferred financing costs | 619 | 426 | 126
Total interest and amortization of deferred financing costs | $ 6,037 | $ 3,218 | $ 346
Weighted average effective interest rate | 4.18% | 3.38% | 1.30%
Average borrowings | $ 129,708 | $ 82,641 | $ 16,971

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