Consolidated Statements of Operations (unaudited) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Investment income
Payment-in-kind interest income		$ 9,164	$ 4,613	$ 17,683	$ 8,943
Total investment income		146,953	85,961	283,830	172,528
Expenses
Interest and other debt financing expenses		36,256	19,275	70,501	37,111
Base management fee		18,688	18,019	37,750	35,520
Incentive fee		17,976	4,362	33,987	7,743
Professional fees		1,320	729	2,528	1,628
Administrative service fee		1,958	1,640	4,133	3,458
General and administrative expenses		317	400	630	742
Total expenses		76,515	44,425	149,529	86,202
Base management fee waived		0	(1,904)	0	(1,904)
Net expenses		76,515	42,521	149,529	84,298
Net investment income - before tax		70,438	43,440	134,301	88,230
Excise tax		232	0	2,432	0
Net investment income - after tax		70,206	43,440	131,869	88,230
Net realized gain (loss) from:
Net realized (gain) loss on investments				(1,470)	14,176
Foreign currency transactions		17	227	(1,169)	744
Forward currency contracts		708	0	1,171	0
Net realized gain (loss) on investments and foreign currency transactions		(4,762)	372	(1,468)	14,920
Net change in unrealized appreciation (depreciation) from:
Debt and equity securities, unrealized gain (loss)				(48,171)	30,716
Translation of assets and liabilities in foreign currencies		2,561	(4,663)	18,458	(5,460)
Forward currency contracts		(2,447)		(16,895)	2,137
Net change in unrealized appreciation (depreciation) on investment transactions		(6,986)	23,158	(46,608)	27,393
Net gain (loss) on investment transactions		(11,748)	23,530	(48,076)	42,313
(Provision) benefit for taxes on realized gain on investments		0	0	(207)	0
(Provision) benefit for taxes on unrealized appreciation on investments		45	(97)	498	(592)
Net increase (decrease) in net assets resulting from operations		$ 58,503	$ 66,873	$ 84,084	$ 129,951
Per Common Share Data
Diluted earnings per common share (in dollars per share)		$ 0.34	$ 0.39	$ 0.49	$ 0.76
Basic earnings per common share (in dollars per share)		0.34	0.39	0.49	0.76
Dividends and distributions declared per common share (in dollars per share)		$ 0.33	$ 0.30	$ 0.66	$ 0.60
Diluted weighted average common shares outstanding (in shares)		170,835,435	170,866,740	170,865,883	170,452,256
Basic weighted average common shares outstanding (in shares)		170,835,435	170,866,740	170,865,883	170,452,256
Non-controlled/non-affiliate company investments
Investment income
Interest income		$ 132,390	$ 80,281	$ 256,068	$ 160,404
Payment-in-kind interest income		8,323	4,271	15,406	8,370
Dividend income		3,906	3	8,039	320
Fee income		1,028	219	1,515	1,228
Total investment income		145,647	84,774	281,028	170,322
Net realized gain (loss) from:
Net realized (gain) loss on investments		(5,487)	145	(1,790)	15,202
Net change in unrealized appreciation (depreciation) from:
Debt and equity securities, unrealized gain (loss)		(723)	28,920	(34,120)	35,458
Non-controlled affiliate company investments
Investment income
Interest income		482	872	528	1,688
Payment-in-kind interest income		746	294	2,089	495
Fee income		5	0	43	0
Total investment income		1,233	1,166	2,660	2,183
Net realized gain (loss) from:
Net realized (gain) loss on investments		0	0	320	(1,026)
Net change in unrealized appreciation (depreciation) from:
Debt and equity securities, unrealized gain (loss)		(5,491)	(1,798)	(13,472)	(891)
Controlled affiliate company investments
Investment income
Interest income	[1]	(27)	(27)	(55)	(55)
Payment-in-kind interest income		95	48	188	78
Fee income		5	0	9	0
Total investment income		73	21	142	23
Net realized gain (loss) from:
Net realized (gain) loss on investments				0
Net change in unrealized appreciation (depreciation) from:
Debt and equity securities, unrealized gain (loss)		$ (886)	$ (1,157)	$ (579)	$ (3,851)

[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.