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