Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Cash flows from operating activities:
Net increase (decrease) in net assets resulting from operations	$ 32,726	$ 48,851	$ (33,807)
Adjustments to reconcile net increase (decrease) in net assets resulting from operations to net cash provided by (used in) operating activities:
Net change in unrealized (appreciation) depreciation on investments	(39,225)	(27,493)	(59,594)
Net change in unrealized depreciation on debt	116	4,385	3,753
Net realized (gain) loss on investments	52,460	33,833	151,516
Debt extinguishment realized loss	0	0	289
Net accretion of discount and amortization of premium	(3,400)	(3,361)	(6,792)
Purchases of investments	(1,219,273)	(1,043,619)	(375,176)
Payment-in-kind income	(7,768)	(9,571)	(4,458)
Proceeds from dispositions of investments	1,257,928	824,555	418,627
Debt issuance costs	1,755	1,755	1,780
(Increase) or Decrease in:
Interest receivable	0	1,559	(3,227)
Receivables from investments sold	0	0	29,494
Distribution receivable	723	(338)	(2,659)
Due from affiliate	60	(228)	0
Prepaid expenses and other assets	(105)	3,592	(306)
Increase or (Decrease) in:
Due to affiliates	(33)	(4,066)	1,990
Payable for investments purchased	29,911	147	99,949
Interest payable on debt	(125)	175	(33)
Base management fee payable, net	(292)	382	(934)
Incentive fee payable	(971)	(253)	3,310
Deferred tax liability	0	0	(896)
Accounts payable and accrued expenses	289	(2,701)	115
Net cash provided by (used in) operating activities	104,776	(172,396)	222,941
Cash flows from financing activities:
Proceeds from public offering	0	552	0
Offering Costs	0	(250)	0
Distributions paid to stockholders	(67,908)	(65,904)	(45,658)
Repayments of SBA debentures	0	0	(20,000)
Borrowings under Truist Credit Facility	207,000	524,036	152,500
Repayments under Truist Credit Facility	(242,000)	(275,000)	(326,000)
Net cash provided by (used in) financing activities	(102,908)	183,434	(239,158)
Net increase (decrease) in cash and cash equivalents	1,868	11,038	(16,217)
Effect of exchange rate changes on cash	54	48	217
Cash and cash equivalents, beginning of year	49,861	38,775	54,775
Cash and cash equivalents, end of year	51,783	49,861	38,775
Supplemental disclosures:
Interest paid	39,685	43,258	37,661
Taxes paid	2,850	6,308	5,707
Non-cash exchanges and conversions	24,684	36,253	18,467
Non-cash purchases and disposition of investments	$ 26,250	$ 0	$ 0