Consolidated Statements of Operations (unaudited) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Investment income
Payment-in-kind interest income		$ 11,829	$ 9,164	$ 23,628	$ 17,683
Total investment income		164,230	146,953	329,000	283,830
Expenses
Interest and other debt financing expenses		44,125	36,256	85,685	70,501
Base management fee		13,662	18,688	27,618	37,750
Incentive fee		20,626	17,976	41,911	33,987
Professional fees		1,342	1,320	2,650	2,528
Administrative service fee		2,145	1,958	4,390	4,133
General and administrative expenses		384	317	765	630
Total expenses		82,284	76,515	163,019	149,529
Incentive fee waived (Note 3)		(5,157)	0	(5,157)	0
Net expenses		77,127	76,515	157,862	149,529
Net investment income - before tax		87,103	70,438	171,138	134,301
Excise and income tax		570	232	1,070	2,432
Net investment income - after tax		86,533	70,206	170,068	131,869
Net realized gain (loss) from:
Non-controlled company investments				(17,368)	(1,470)
Foreign currency transactions		4,459	17	4,646	(1,169)
Forward currency contracts		0	708	0	1,171
Net realized gain (loss) on investment transactions		(13,818)	(4,762)	(12,722)	(1,468)
Net change in unrealized appreciation (depreciation) from:
Company investments				17,013	(48,171)
Translation of assets and liabilities in foreign currencies		(10,156)	2,561	(3,969)	18,458
Net change in unrealized appreciation (depreciation) on investment transactions		20,493	(6,986)	11,661	(46,608)
Net gain (loss) on investment transactions		6,675	(11,748)	(1,061)	(48,076)
(Provision) benefit for taxes on realized gains on investments		0	0	0	(207)
(Provision) benefit for taxes on unrealized appreciation on investments		350	45	327	498
Net increase (decrease) in net assets resulting from operations		$ 93,558	$ 58,503	$ 169,334	$ 84,084
Per Common Share Data
Basic earnings per common share (in dollars per share)		$ 0.55	$ 0.34	$ 1.00	$ 0.49
Diluted earnings per common share (in dollars per share)		0.55	0.34	1.00	0.49
Dividends and distributions declared per common share (in dollars per share)		$ 0.46	$ 0.33	$ 0.90	$ 0.66
Basic weighted average common shares outstanding (in shares)		170,637,140	170,835,435	170,140,990	170,865,883
Diluted weighted average common shares outstanding (in shares)		170,637,140	170,835,435	170,140,990	170,865,883
Forward currency contracts
Net change in unrealized appreciation (depreciation) from:
Forward currency contracts		$ 4,332	$ (2,447)	$ (1,383)	$ (16,895)
Non-controlled/non-affiliate company investments
Investment income
Interest income		145,838	132,390	293,910	256,068
Payment-in-kind interest income		10,691	8,323	21,060	15,406
Dividend income		4,365	3,906	8,740	8,039
Fee income		452	1,028	817	1,515
Total investment income		161,346	145,647	324,527	281,028
Net realized gain (loss) from:
Non-controlled company investments		240	(5,487)	1,149	(1,790)
Net change in unrealized appreciation (depreciation) from:
Company investments		15,644	(723)	18,691	(34,120)
Non-controlled affiliate company investments
Investment income
Interest income		1,723	482	1,830	528
Payment-in-kind interest income		1,031	746	2,359	2,089
Fee income		18	5	66	43
Total investment income		2,772	1,233	4,255	2,660
Net realized gain (loss) from:
Non-controlled company investments		(18,517)	0	(18,517)	320
Net change in unrealized appreciation (depreciation) from:
Company investments		11,854	(5,491)	(371)	(13,472)
Controlled affiliate company investments
Investment income
Interest income	[1]	0	(27)	0	(55)
Payment-in-kind interest income		107	95	209	188
Fee income		5	5	9	9
Total investment income from controlled affiliate company investments		112	73	218	142
Net realized gain (loss) from:
Non-controlled company investments				0
Net change in unrealized appreciation (depreciation) from:
Company investments		$ (1,181)	$ (886)	$ (1,307)	$ (579)

[1] Negative interest income amounts are due to amortization of the GCIC acquisition purchase premium. Refer to Note 2 for additional details on the GCIC acquisition purchase premium.