COMMITMENTS AND CONTINGENCIES - Unfunded Debt Commitments (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Mar. 31, 2025
Total Unfunded Debt Commitments
Other Commitments [Line Items]
Total Unfunded Debt Commitments	$ 333,527	$ 196,907
2026
Other Commitments [Line Items]
Total Unfunded Debt Commitments	90,913	31,354
2027
Other Commitments [Line Items]
Total Unfunded Debt Commitments	137,384	70,235
2028
Other Commitments [Line Items]
Total Unfunded Debt Commitments	20,277	16,420
2029
Other Commitments [Line Items]
Total Unfunded Debt Commitments	38,534	42,986
2030
Other Commitments [Line Items]
Total Unfunded Debt Commitments	30,224	33,912
2031
Other Commitments [Line Items]
Total Unfunded Debt Commitments	11,902	2,000
2032
Other Commitments [Line Items]
Total Unfunded Debt Commitments	$ 4,293	$ 0