BORROWINGS - Schedule of SBA Debentures (Details) - SBA Debentures - Unsecured Debt - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Debt Instrument [Line Items]
Interest expense and unused commitment fees	$ 1,677	$ 1,220
Amortization of deferred financing costs	184	143
Total interest and amortization of deferred financing costs	$ 1,861	$ 1,363
Weighted average effective interest rate	4.38%	3.94%
Average borrowings	$ 153,000	$ 123,681