BORROWINGS - Corporate Credit Facility and Special Purpose Vehicle Financing Credit Facility (Details) - Line of Credit - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Corporate Credit Facility
Line of Credit Facility [Line Items]
Weighted average effective interest rate	7.77%		7.78%
Average borrowings	$ 237,500		$ 237,200
Corporate Credit Facility | Corporate Credit Facility
Line of Credit Facility [Line Items]
Interest expense and unused commitment fees	3,689	$ 3,901	7,776	$ 8,520
Amortization of deferred financing costs	558	444	1,107	740
Total interest and amortization of deferred financing costs	$ 4,247	$ 4,345	$ 8,883	$ 9,260
Weighted average effective interest rate	7.74%	7.70%	7.75%	7.52%
Average borrowings	$ 166,685	$ 185,054	$ 178,579	$ 106,120
Secured Debt | SPV Credit Facility
Line of Credit Facility [Line Items]
Interest expense and unused commitment fees	1,704	0	2,920	0
Amortization of deferred financing costs	114	0	204	0
Total interest and amortization of deferred financing costs	$ 1,818	$ 0	$ 3,124	$ 0
Weighted average effective interest rate	7.85%	0.00%	7.87%	0.00%
Average borrowings	$ 70,826	$ 0	$ 58,617	$ 0