Consolidated Statements of Changes in Members' Capital (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024
Members' Capital, Beginning Balance	$ 512,804	$ 528,008	$ 576,756	$ 569,767
Net Increase (Decrease) in Members' Capital Resulting from Operations:
Net investment income	15,579	54,734	57,693	27,182
Net realized gain (loss) on investments	(96,593)	(3,512)	291	257
Net change in unrealized appreciation/(depreciation) on investments	51,948	(66,426)	(45,458)	(15,450)
Distributions to Members from:
Distributable earnings				(5,000)
Total Increase (Decrease) in Members' Capital	(29,066)	(15,204)	12,526	6,989
Members' Capital, Ending Balance	483,738	512,804	589,282	576,756
Common Unitholders’ Capital
Members' Capital, Beginning Balance	716,388	716,388	721,083	721,083
Net Increase (Decrease) in Members' Capital Resulting from Operations:
Net investment income	0	0	0	0
Net realized gain (loss) on investments	0	0	0	0
Net change in unrealized appreciation/(depreciation) on investments	0	0	0	0
Distributions to Members from:
Distributable earnings				0
Total Increase (Decrease) in Members' Capital	0	0	0	0
Members' Capital, Ending Balance	716,388	716,388	721,083	721,083
Accumulated Undistributed (Overdistributed) Earnings
Members' Capital, Beginning Balance	(203,584)	(188,380)	(144,327)	(151,316)
Net Increase (Decrease) in Members' Capital Resulting from Operations:
Net investment income	15,579	54,734	57,693	27,182
Net realized gain (loss) on investments	(96,593)	(3,512)	291	257
Net change in unrealized appreciation/(depreciation) on investments	51,948	(66,426)	(45,458)	(15,450)
Distributions to Members from:
Distributable earnings				(5,000)
Total Increase (Decrease) in Members' Capital	(29,066)	(15,204)	12,526	6,989
Members' Capital, Ending Balance	$ (232,650)	$ (203,584)	$ (131,801)	$ (144,327)