Annual report [Section 13 and 15(d), not S-K Item 405]

Schedule Of Consolidated Changes In Investments At Cost And Realized Gain - Schedule of changes in investments at cost and realized gain (Details)

Schedule Of Consolidated Changes In Investments At Cost And Realized Gain - Schedule of changes in investments at cost and realized gain (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Schedule of Investments [Line Items]
Realized Gains (Loss)	$ 11,124,864	$ 1,051,079	$ 705,493
Investment, Identifier [Axis]: Investments repaid, sold or liquidated, ACV Auctions, Inc. stock sold
Schedule of Investments [Line Items]
Cost Increase (Decrease)	(53,094)
Realized Gains (Loss)	3,450,092
Investment, Identifier [Axis]: Investments repaid, sold or liquidated, Ares Capital Corporation stock sold
Schedule of Investments [Line Items]
Cost Increase (Decrease)	(267,140)
Realized Gains (Loss)	176,794
Investment, Identifier [Axis]: Investments repaid, sold or liquidated, BMP Food Service Supply Holdco, LLC debt repayment
Schedule of Investments [Line Items]
Cost Increase (Decrease)	(34,838)
Investment, Identifier [Axis]: Investments repaid, sold or liquidated, Barings BDC, Inc. stock sold
Schedule of Investments [Line Items]
Cost Increase (Decrease)	(333,352)
Realized Gains (Loss)	59,282
Investment, Identifier [Axis]: Investments repaid, sold or liquidated, Carlyle Secured Lending Inc. stock sold
Schedule of Investments [Line Items]
Cost Increase (Decrease)	(899,749)
Realized Gains (Loss)	598,371
Investment, Identifier [Axis]: Investments repaid, sold or liquidated, DSD Operating, LLC escrow receipt
Schedule of Investments [Line Items]
Realized Gains (Loss)	23,699
Investment, Identifier [Axis]: Investments repaid, sold or liquidated, FS KKR Capital Corp. stock sold
Schedule of Investments [Line Items]
Cost Increase (Decrease)	(755,058)
Realized Gains (Loss)	190,072
Investment, Identifier [Axis]: Investments repaid, sold or liquidated, Filterworks Acquisition USA, LLC debt repayment
Schedule of Investments [Line Items]
Cost Increase (Decrease)	(206,250)
Investment, Identifier [Axis]: Investments repaid, sold or liquidated, Knoa Software, Inc. liquidated
Schedule of Investments [Line Items]
Cost Increase (Decrease)	(1,229,155)
Realized Gains (Loss)	(1,229,155)
Investment, Identifier [Axis]: Investments repaid, sold or liquidated, Mattison Avenue Holdings LLC loan repayment
Schedule of Investments [Line Items]
Cost Increase (Decrease)	(1,894,470)
Investment, Identifier [Axis]: Investments repaid, sold or liquidated, Mezmeriz, Inc. liquidated
Schedule of Investments [Line Items]
Cost Increase (Decrease)	(742,850)
Realized Gains (Loss)	(742,850)
Investment, Identifier [Axis]: Investments repaid, sold or liquidated, Nailbiter, Inc. debt repayment
Schedule of Investments [Line Items]
Cost Increase (Decrease)	(2,250,000)
Investment, Identifier [Axis]: Investments repaid, sold or liquidated, PennantPark Investment Corporation stock sold
Schedule of Investments [Line Items]
Cost Increase (Decrease)	(892,212)
Realized Gains (Loss)	484,834
Investment, Identifier [Axis]: Investments repaid, sold or liquidated, Pressure Pro, Inc. debt repayment
Schedule of Investments [Line Items]
Cost Increase (Decrease)	(1,427,452)
Investment, Identifier [Axis]: Investments repaid, sold or liquidated, SciAps, Inc. debt repayment and equity sale
Schedule of Investments [Line Items]
Cost Increase (Decrease)	(5,213,984)
Realized Gains (Loss)	7,716,461
Investment, Identifier [Axis]: Investments repaid, sold or liquidated, Tilson Technology Management, Inc. asset sale
Schedule of Investments [Line Items]
Realized Gains (Loss)	397,264
Investment, Identifier [Axis]: Net change in investments, at cost and total realized gain
Schedule of Investments [Line Items]
Cost Increase (Decrease)	(245,371)
Realized Gains (Loss)	11,124,864
Investment, Identifier [Axis]: New investments, BMP Food Service Supply Holdco, LLC
Schedule of Investments [Line Items]
Cost Increase (Decrease)	107,619
Investment, Identifier [Axis]: New investments, ITA Acquisition, LLC
Schedule of Investments [Line Items]
Cost Increase (Decrease)	458,333
Investment, Identifier [Axis]: New investments, Mattison Avenue Holdings LLC
Schedule of Investments [Line Items]
Cost Increase (Decrease)	5,500,000
Investment, Identifier [Axis]: New investments, Mobile RN Holdings LLC
Schedule of Investments [Line Items]
Cost Increase (Decrease)	2,875,000
Investment, Identifier [Axis]: New investments, Mountain Regional Equipment Solutions
Schedule of Investments [Line Items]
Cost Increase (Decrease)	3,204,545
Investment, Identifier [Axis]: New investments, Seybert’s Billiards Corporation
Schedule of Investments [Line Items]
Cost Increase (Decrease)	1,800,000
Investment, Identifier [Axis]: Other changes to investments, BMP Swanson Holdco, LLC interest conversion
Schedule of Investments [Line Items]
Cost Increase (Decrease)	177,911
Investment, Identifier [Axis]: Other changes to investments, Caitec, Inc. interest conversion
Schedule of Investments [Line Items]
Cost Increase (Decrease)	590,424
Investment, Identifier [Axis]: Other changes to investments, FCM Industries Holdco LLC interest conversion
Schedule of Investments [Line Items]
Cost Increase (Decrease)	46,681
Investment, Identifier [Axis]: Other changes to investments, Filterworks Acquisition USA, LLC interest conversion
Schedule of Investments [Line Items]
Cost Increase (Decrease)	253,952
Investment, Identifier [Axis]: Other changes to investments, GoNoodle, Inc. interest conversion
Schedule of Investments [Line Items]
Cost Increase (Decrease)	14,314
Investment, Identifier [Axis]: Other changes to investments, HDI Acquisition LLC interest conversion
Schedule of Investments [Line Items]
Cost Increase (Decrease)	21,519
Investment, Identifier [Axis]: Other changes to investments, Highland All About People Holdings, Inc. interest conversion
Schedule of Investments [Line Items]
Cost Increase (Decrease)	125,904
Investment, Identifier [Axis]: Other changes to investments, ITA Acquisition, LLC interest conversion
Schedule of Investments [Line Items]
Cost Increase (Decrease)	457,837
Investment, Identifier [Axis]: Other changes to investments, Inter-National Electronic Alloys LLC interest conversion
Schedule of Investments [Line Items]
Cost Increase (Decrease)	33,995
Investment, Identifier [Axis]: Other changes to investments, Mattison Avenue Holdings, LLC interest conversion
Schedule of Investments [Line Items]
Cost Increase (Decrease)	72,902
Investment, Identifier [Axis]: Other changes to investments, Mobile RN Holdings LLC interest conversion
Schedule of Investments [Line Items]
Cost Increase (Decrease)	6,319
Investment, Identifier [Axis]: Other changes to investments, Mountain Regional Equipment Solutions OID amortization
Schedule of Investments [Line Items]
Cost Increase (Decrease)	12,000
Investment, Identifier [Axis]: Other changes to investments, Pressure Pro, Inc. OID amortization and interest conversion
Schedule of Investments [Line Items]
Cost Increase (Decrease)	66,721
Investment, Identifier [Axis]: Other changes to investments, Seybert’s Billiards Corporation OID amortization and interest conversion
Schedule of Investments [Line Items]
Cost Increase (Decrease)	128,257
Investment, Identifier [Axis]: Total of investments repaid, sold, liquidated or converted
Schedule of Investments [Line Items]
Cost Increase (Decrease)	(16,199,604)
Realized Gains (Loss)	11,124,864
Investment, Identifier [Axis]: Total of new investments
Schedule of Investments [Line Items]
Cost Increase (Decrease)	13,945,497
Investment, Identifier [Axis]: Total of other changes to investments
Schedule of Investments [Line Items]
Cost Increase (Decrease)	$ 2,008,736