Statement of Shareholders' Equity (Statement) - USD ($) $ in Thousands	Total	Investment, Identifier [Axis]: Activehours, Inc. (d/b/a Earnin)	Investment, Identifier [Axis]: Athletic Greens (USA), Inc.	Investment, Identifier [Axis]: Avantstay, Inc.	Investment, Identifier [Axis]: Baby Generation, Inc.	Investment, Identifier [Axis]: Belong Home, Inc.	Investment, Identifier [Axis]: Corelight, Inc.	Investment, Identifier [Axis]: Dia Styling Co.	Investment, Identifier [Axis]: Don't Run Out, Inc.	Investment, Identifier [Axis]: FlashParking, Inc.	Investment, Identifier [Axis]: Flo Health, Inc.	Investment, Identifier [Axis]: Foodology Inc.	Investment, Identifier [Axis]: Found Health, Inc.	Investment, Identifier [Axis]: Frubana Inc.	Investment, Identifier [Axis]: Homeward, Inc.	Investment, Identifier [Axis]: JOKR S.à r.l.	Investment, Identifier [Axis]: Jerry Services, Inc.	Investment, Identifier [Axis]: Kalderos, Inc.	Investment, Identifier [Axis]: LeoLabs, Inc.	Investment, Identifier [Axis]: Loft Orbital Solutions Inc.	Investment, Identifier [Axis]: Lower Holding Company	Investment, Identifier [Axis]: McN Investments Ltd.	Investment, Identifier [Axis]: Medly Health Inc.	Investment, Identifier [Axis]: Merama Inc.	Investment, Identifier [Axis]: Minted, Inc.	Investment, Identifier [Axis]: Mynd Management, Inc.	Investment, Identifier [Axis]: Mystery Tackle Box, Inc. (d/b/a Catch Co.)	Investment, Identifier [Axis]: NewStore Inc.	Investment, Identifier [Axis]: Open Space Labs, Inc.	Investment, Identifier [Axis]: Overtime Sports, Inc.	Investment, Identifier [Axis]: Pair EyeWear, Inc.	Investment, Identifier [Axis]: Project 1920, Inc.	Investment, Identifier [Axis]: Quick Commerce Ltd	Investment, Identifier [Axis]: RenoRun US Inc.	Investment, Identifier [Axis]: Savage X, Inc.	Investment, Identifier [Axis]: Substack Inc.	Investment, Identifier [Axis]: Tempo Interactive Inc.	Investment, Identifier [Axis]: The Aligned Company (f/k/a Thingy Thing Inc.)	Investment, Identifier [Axis]: The Pill Club Holdings, Inc.	Investment, Identifier [Axis]: True Footage Inc.	Investment, Identifier [Axis]: Vial Health Technology Inc.	Common Stock	Additional Paid-in Capital	Total distributable earnings (loss)
Beginning balance (in shares) at Dec. 31, 2021																																										31,011,000
Beginning balance at Dec. 31, 2021	$ 434,491																																									$ 310	$ 414,218	$ 19,963
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss)	(8,708)																																										0	(8,708)
Distributions reinvested in common stock (in shares)																																										63,000
Distributions from distributable earnings	878																																									$ 1	877	0
Distributed Earnings	(22,337)																																										0	(22,337)
Investment Company, Tax Reclassification, Increase (Decrease)	$ 0																																										0	0
Ending balance (in shares) at Jun. 30, 2022	31,074,000																																									31,074,000
Ending balance at Jun. 30, 2022	$ 404,324																																									$ 311	415,095	(11,082)
Beginning balance (in shares) at Mar. 31, 2022																																										31,037,000
Beginning balance at Mar. 31, 2022	429,459																																									$ 310	414,644	14,505
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss)	(14,413)																																										0	(14,413)
Distributions reinvested in common stock (in shares)																																										37,000
Distributions from distributable earnings	452																																									$ 1	451	0
Distributed Earnings	(11,174)																																										0	(11,174)
Investment Company, Tax Reclassification, Increase (Decrease)	$ 0																																										0	0
Ending balance (in shares) at Jun. 30, 2022	31,074,000																																									31,074,000
Ending balance at Jun. 30, 2022	$ 404,324																																									$ 311	415,095	(11,082)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Unfunded commitments	334,170
Unfunded commitments	$ 324,010	$ 5,000	$ 20,000	$ 5,000	$ 1,417	$ 9,718	$ 22,857	$ 5,000	$ 1,499	$ 1,000	$ 15,000	$ 0	$ 25,000	$ 30,000	$ 0	$ 12,750	$ 12,500	$ 10,000	$ 12,000	$ 5,000	$ 10,000	$ 8,000	$ 13,000	$ 7,976	$ 4,000	$ 1,000	$ 3,490	$ 1,000	$ 2,500	$ 20,000	$ 2,167	$ 1,000	$ 1,000	$ 10,000	$ 10,000	$ 2,036	$ 1,000	$ 5,100	$ 0	$ 12,000	$ 15,000
Beginning balance (in shares) at Dec. 31, 2022	35,348,049																																									35,348,000
Beginning balance at Dec. 31, 2022	$ 419,940																																									$ 353	470,572	(50,985)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss)	(13,176)																																										0	(13,176)
Distributions reinvested in common stock	0																																									$ 0	0	0
Distributions reinvested in common stock (in shares)																																										99,000
Distributions from distributable earnings	1,119																																									$ 1	1,118	0
Distributed Earnings	(28,299)																																										0	(28,299)
Offering costs	150																																										150
Investment Company, Tax Reclassification, Increase (Decrease)	$ 0																																										0	0
Ending balance (in shares) at Jun. 30, 2023	35,447,000																																									35,447,000
Ending balance at Jun. 30, 2023	$ 379,434																																									$ 354	471,540	(92,460)
Beginning balance (in shares) at Mar. 31, 2023																																										35,397,000
Beginning balance at Mar. 31, 2023	413,954																																									$ 354	471,046	(57,446)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss)	(20,855)																																										0	(20,855)
Distributions reinvested in common stock	0																																									$ 0	0	0
Distributions reinvested in common stock (in shares)																																										50,000
Distributions from distributable earnings	553																																									$ 0	553	0
Distributed Earnings	(14,159)																																										0	(14,159)
Offering costs	59																																										59
Investment Company, Tax Reclassification, Increase (Decrease)	$ 0																																										0	0
Ending balance (in shares) at Jun. 30, 2023	35,447,000																																									35,447,000
Ending balance at Jun. 30, 2023	$ 379,434																																									$ 354	$ 471,540	$ (92,460)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Unfunded commitments	$ 205,318	$ 5,000	$ 20,000	$ 5,000	$ 23	$ 0	$ 22,857	$ 0	$ 1,499	$ 1,000	$ 0	$ 3,000	$ 16,790	$ 20,000	$ 1,400	$ 0	$ 12,500	$ 10,000	$ 12,000	$ 5,000	$ 7,020	$ 3,000	$ 0	$ 3,720	$ 2,000	$ 1,000	$ 0	$ 1,000	$ 0	$ 20,000	$ 0	$ 0	$ 1,000	$ 10,000	$ 10,000	$ 0	$ 0	$ 5,509	$ 0	$ 0	$ 5,000