v3.25.4

FAIR VALUE MEASUREMENTS - Changes in Fair Value of Investments Measured Using Level 3 Inputs (Details) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Total Investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning balance	$ 1,785,299	$ 1,476,561
Realized & Unrealized Gains (Losses)	(6,246)	(33,341)
Purchases of Investments	535,471	478,033
Repayments	(245,931)	(201,463)
PIK Interest Capitalized	10,137	8,804
Divestitures	(65,525)	(27,308)
Conversion/Exchange of Security	0	0
Fair value. ending balance	2,013,205	1,701,286
YTD Unrealized Appreciation (Depreciation) on Investments held at period end	1,755	(19,440)
First lien loans
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning balance	1,586,622	1,309,449
Realized & Unrealized Gains (Losses)	(27,555)	(39,763)
Purchases of Investments	523,371	466,533
Repayments	(245,785)	(197,759)
PIK Interest Capitalized	10,129	8,720
Divestitures	(30,362)	(27,308)
Conversion/Exchange of Security	(3,951)	(4,730)
Fair value. ending balance	1,812,469	1,515,142
YTD Unrealized Appreciation (Depreciation) on Investments held at period end	(23,636)	(28,533)
Second lien loans
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning balance	18,066	33,774
Realized & Unrealized Gains (Losses)	(1,255)	(3,011)
Purchases of Investments	39	18
Repayments	0	(3,629)
PIK Interest Capitalized	0	70
Divestitures	0	0
Conversion/Exchange of Security	0	(1,062)
Fair value. ending balance	16,850	26,160
YTD Unrealized Appreciation (Depreciation) on Investments held at period end	(1,256)	(1,130)
Subordinated debt
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning balance	1,218	1,336
Realized & Unrealized Gains (Losses)	2	43
Purchases of Investments	57	57
Repayments	(146)	(75)
PIK Interest Capitalized	8	14
Divestitures	0	0
Conversion/Exchange of Security	0	(153)
Fair value. ending balance	1,139	1,222
YTD Unrealized Appreciation (Depreciation) on Investments held at period end	2	34
Preferred equity
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning balance	102,918	71,127
Realized & Unrealized Gains (Losses)	(5,908)	7,359
Purchases of Investments	4,049	6,730
Repayments	0	0
PIK Interest Capitalized	0	0
Divestitures	(31,323)	0
Conversion/Exchange of Security	(688)	0
Fair value. ending balance	69,048	85,216
YTD Unrealized Appreciation (Depreciation) on Investments held at period end	(1,523)	7,359
Common equity & warrants
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning balance	76,475	60,875
Realized & Unrealized Gains (Losses)	28,185	2,031
Purchases of Investments	4,498	4,695
Repayments	0	0
PIK Interest Capitalized	0	0
Divestitures	(3,840)	0
Conversion/Exchange of Security	4,639	5,945
Fair value. ending balance	109,957	73,546
YTD Unrealized Appreciation (Depreciation) on Investments held at period end	27,883	$ 2,830
Earnout
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning balance	0
Realized & Unrealized Gains (Losses)	285
Purchases of Investments	3,457
Repayments	0
PIK Interest Capitalized	0
Divestitures	0
Conversion/Exchange of Security	0
Fair value. ending balance	3,742
YTD Unrealized Appreciation (Depreciation) on Investments held at period end	$ 285

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