BORROWINGS - SBA Debentures (Details) - SBA Debentures - Unsecured Debt - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Debt Instrument [Line Items]
Interest expense and fees	$ 1,948	$ 1,695	$ 3,875	$ 3,372
Amortization of deferred financing costs	197	184	394	368
Total interest and amortization of deferred financing costs	$ 2,145	$ 1,879	$ 4,269	$ 3,740
Weighted average interest rate	4.45%	4.43%	4.43%	4.41%
Average borrowings	$ 175,000	$ 153,000	$ 175,000	$ 153,000