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, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Corporate Credit Facility
Line of Credit Facility [Line Items]
Weighted average interest rate	6.79%		6.76%
Average borrowings	$ 315,400		$ 317,500
Corporate Credit Facility | Corporate Credit Facility
Line of Credit Facility [Line Items]
Interest expense	3,398	$ 3,226	6,860	$ 6,920
Unused commitment and other fees	465	463	899	856
Amortization of deferred financing costs	609	558	1,218	1,107
Total interest and amortization of deferred financing costs	$ 4,472	$ 4,247	$ 8,977	$ 8,883
Weighted average interest rate	6.72%	7.74%	6.68%	7.75%
Average borrowings	$ 202,391	$ 166,685	$ 205,328	$ 178,579
SPV Credit Facility | SPV Credit Facility
Line of Credit Facility [Line Items]
Interest expense	1,954	1,390	3,869	2,307
Unused commitment and other fees	299	314	605	613
Amortization of deferred financing costs	114	114	228	204
Total interest and amortization of deferred financing costs	$ 2,367	$ 1,818	$ 4,702	$ 3,124
Weighted average interest rate	6.92%	7.85%	6.90%	7.87%
Average borrowings	$ 112,967	$ 70,826	$ 112,202	$ 58,617