BORROWINGS - SBA Debentures (Details) - SBA Debentures - Unsecured Debt - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Debt Instrument [Line Items]
Interest expense and fees	$ 7,085	$ 5,418	$ 2,792
Amortization of deferred financing costs	758	619	426
Total interest and amortization of deferred financing costs	$ 7,843	$ 6,037	$ 3,218
Weighted average interest rate	4.40%	4.18%	3.38%
Average borrowings	$ 161,019	$ 129,708	$ 82,641