Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Investment income:
Interest income	$ 254,221	$ 170,989
Payment in-kind interest income	9,841	8,686
Dividend income	0	5,908
Fee income	876	14
Total investment income	264,938	185,597
Expenses:
Interest expense	66,728	40,301
Management fees (Note 3)	24,696	25,636
Income based incentive fee payable	30,393	21,284
Capital gains incentive fee payable	(1,556)	681
Professional fees	1,188	707
Board of Trustees' fees	225	181
Administrative service expenses (Note 3)	378	840
Other general and administrative	1,605	1,327
Total expenses	123,657	90,957
Management fees waived (Note 3)	(6,174)	(6,409)
Incentive fees waived (Note 3)	(4,342)	(3,040)
Net expenses	113,141	81,508
Net investment income before excise tax	151,797	104,089
Excise tax expense	2,622	1,386
Net investment income after excise tax	149,175	102,703
Net change in unrealized appreciation (depreciation):
Net unrealized (appreciation) depreciation on investments	(11,403)	(2,147)
Translation of assets and liabilities in foreign currencies	(3,141)	735
Net unrealized appreciation (depreciation)	(14,544)	(1,412)
Realized gain (loss):
Non-controlled/non-affiliated investments	(3,486)	5,382
Foreign currency transactions	7,653	567
Net realized gain (loss)	4,167	5,949
Net realized and unrealized gain (loss)	(10,377)	4,537
Net increase (decrease) in net assets resulting from operations	$ 138,798	$ 107,240
Net investment income (in usd per share)	$ 0.93	$ 0.61
Earnings per share basic (in usd per share)	0.86	0.63
Earnings per share diluted (in usd per share)	$ 0.86	$ 0.63
Weighted average shares outstanding basic (in share)	160,501,868	169,556,923
Weighted average shares outstanding diluted (in share)	160,501,868	169,556,923
Non-controlled/non-affiliated investments
Net change in unrealized appreciation (depreciation):
Net unrealized (appreciation) depreciation on investments	$ (6,762)	$ (2,073)
Non-controlled/affiliated investments
Net change in unrealized appreciation (depreciation):
Net unrealized (appreciation) depreciation on investments	$ (4,641)	$ (74)