Consolidated Schedule of Changes in Investments in Non-Controlled Affiliates (Unaudited) (Details) - USD ($)		3 Months Ended		12 Months Ended
		Mar. 31, 2023		Dec. 31, 2022
Investment, Identifier [Axis]: Controlled Affiliates
Schedule Of Investments [Line Items]
Dividends or Interest		$ 2,209,052	[1],[2]	$ 11,505,454	[3],[4]
Fair Value, Beginning Balance		137,733,285	[2]	105,087,211	[4]
Net realized gain or loss		0	[2]	(124,801)	[4]
Net increase or decrease in unrealized appreciation or depreciation		(1,874,739)	[2]	20,393,093	[4]
Acquisitions		33,899,517	[2],[5]	23,391,610	[4],[6]
Dispositions		0	[2],[7]	11,013,828	[4],[8]
Fair Value, Ending Balance	[2]	169,758,063		137,733,285
Investment, Identifier [Axis]: Controlled Affiliates, 36th Street Capital Partners Holdings, LLC, Membership Units
Schedule Of Investments [Line Items]
Dividends or Interest		0	[1],[2]	3,794,889	[3],[4]
Fair Value, Beginning Balance		56,272,000	[2]	34,082,000	[4]
Net realized gain or loss		0	[2]	0	[4]
Net increase or decrease in unrealized appreciation or depreciation		(2,018,000)	[2]	20,940,000	[4]
Acquisitions		0	[2],[5]	1,250,000	[4],[6]
Dispositions		0	[2],[7]	0	[4],[8]
Fair Value, Ending Balance	[2]	54,254,000		56,272,000
Investment, Identifier [Axis]: Controlled Affiliates, 36th Street Capital Partners Holdings, LLC, Senior Note, 12%, due 11/1/25
Schedule Of Investments [Line Items]
Dividends or Interest		1,423,843	[1],[2]	4,977,439	[3],[4]
Fair Value, Beginning Balance		50,131,437	[2]	41,381,437	[4]
Net realized gain or loss		0	[2]	0	[4]
Net increase or decrease in unrealized appreciation or depreciation		0	[2]	0	[4]
Acquisitions		0	[2],[5]	8,750,000	[4],[6]
Dispositions		0	[2],[7]	0	[4],[8]
Fair Value, Ending Balance	[2]	50,131,437		50,131,437
Investment, Identifier [Axis]: Controlled Affiliates, Anacomp, Inc., Class A Common Stock
Schedule Of Investments [Line Items]
Dividends or Interest		0	[1],[2]	0	[3],[4]
Fair Value, Beginning Balance		552,432	[2]	326,437	[4]
Net realized gain or loss		0	[2]	0	[4]
Net increase or decrease in unrealized appreciation or depreciation		0	[2]	225,995	[4]
Acquisitions		0	[2],[5]	0	[4],[6]
Dispositions		0	[2],[7]	0	[4],[8]
Fair Value, Ending Balance	[2]	552,432		552,432
Investment, Identifier [Axis]: Controlled Affiliates, AutoAlert, LLC, Class A Common Interest
Schedule Of Investments [Line Items]
Dividends or Interest	[1],[2]	0
Fair Value, Beginning Balance	[2]	0
Net realized gain or loss	[2]	0
Net increase or decrease in unrealized appreciation or depreciation	[2]	0
Acquisitions	[2],[5]	4,713,886
Dispositions	[2],[7]	0
Fair Value, Ending Balance	[2]	4,713,886		0
Investment, Identifier [Axis]: Controlled Affiliates, AutoAlert, LLC, Preferred Equity
Schedule Of Investments [Line Items]
Dividends or Interest	[1],[2]	0
Fair Value, Beginning Balance	[2]	0
Net realized gain or loss	[2]	0
Net increase or decrease in unrealized appreciation or depreciation	[2]	0
Acquisitions	[2],[5]	4,302,264
Dispositions	[2],[7]	0
Fair Value, Ending Balance	[2]	4,302,264		0
Investment, Identifier [Axis]: Controlled Affiliates, AutoAlert, LLC, Senior Secured 1st Lien Term Loan, SOFR + 5.4%, 1% SOFR Floor, PIK toggle, due 3/31/28
Schedule Of Investments [Line Items]
Dividends or Interest	[1],[2]	4,657
Fair Value, Beginning Balance	[2]	0
Net realized gain or loss	[2]	0
Net increase or decrease in unrealized appreciation or depreciation	[2]	0
Acquisitions	[2],[5]	16,278,838
Dispositions	[2],[7]	0
Fair Value, Ending Balance	[2]	16,278,838		0
Investment, Identifier [Axis]: Controlled Affiliates, AutoAlert, LLC, Senior Secured 2nd Lien Term Loan, SOFR + 9.4%, 1% SOFR Floor, PIK toggle, due 3/31/29
Schedule Of Investments [Line Items]
Dividends or Interest	[1],[2]	3,418
Fair Value, Beginning Balance	[2]	0
Net realized gain or loss	[2]	0
Net increase or decrease in unrealized appreciation or depreciation	[2]	0
Acquisitions	[2],[5]	8,604,529
Dispositions	[2],[7]	0
Fair Value, Ending Balance	[2]	8,604,529		0
Investment, Identifier [Axis]: Controlled Affiliates, Conergy Asia & ME Pte. Ltd., 1st Lien Term Loan, 0%, due 12/31/22
Schedule Of Investments [Line Items]
Dividends or Interest		0	[1],[2]	0	[3],[4]
Fair Value, Beginning Balance		0	[2]	339,100	[4]
Net realized gain or loss		0	[2]	0	[4]
Net increase or decrease in unrealized appreciation or depreciation		0	[2]	(339,100)	[4]
Acquisitions		0	[2],[5]	0	[4],[6]
Dispositions		0	[2],[7]	0	[4],[8]
Fair Value, Ending Balance	[2]	0		0
Investment, Identifier [Axis]: Controlled Affiliates, Conergy Asia Holdings Limited, Class B Shares
Schedule Of Investments [Line Items]
Dividends or Interest		0	[1],[2]	0	[3],[4]
Fair Value, Beginning Balance		0	[2]	0	[4]
Net realized gain or loss		0	[2]	0	[4]
Net increase or decrease in unrealized appreciation or depreciation		0	[2]	0	[4]
Acquisitions		0	[2],[5]	0	[4],[6]
Dispositions		0	[2],[7]	0	[4],[8]
Fair Value, Ending Balance	[2]	0		0
Investment, Identifier [Axis]: Controlled Affiliates, Conergy Asia Holdings Limited, Ordinary Shares
Schedule Of Investments [Line Items]
Dividends or Interest		0	[1],[2]	0	[3],[4]
Fair Value, Beginning Balance		0	[2]	0	[4]
Net realized gain or loss		0	[2]	0	[4]
Net increase or decrease in unrealized appreciation or depreciation		0	[2]	0	[4]
Acquisitions		0	[2],[5]	0	[4],[6]
Dispositions		0	[2],[7]	0	[4],[8]
Fair Value, Ending Balance	[2]	0		0
Investment, Identifier [Axis]: Controlled Affiliates, Conventional Lending TCP Holdings, LLC, Membership Units
Schedule Of Investments [Line Items]
Dividends or Interest		479,568	[1],[2]	2,155,374	[3],[4]
Fair Value, Beginning Balance		16,146,544	[2]	26,901,777	[4]
Net realized gain or loss		0	[2]	(124,801)	[4]
Net increase or decrease in unrealized appreciation or depreciation		0	[2]	(131,604)	[4]
Acquisitions		0	[2],[5]	515,000	[4],[6]
Dispositions		0	[2],[7]	11,013,828	[4],[8]
Fair Value, Ending Balance	[2]	16,146,544		16,146,544
Investment, Identifier [Axis]: Controlled Affiliates, Fishbowl INC., Common Membership Units
Schedule Of Investments [Line Items]
Dividends or Interest		0	[1],[2]	0	[3],[4]
Fair Value, Beginning Balance		577,277	[2]	0	[4]
Net realized gain or loss		0	[2]	0	[4]
Net increase or decrease in unrealized appreciation or depreciation		143,261	[2]	(209,754)	[4]
Acquisitions		0	[2],[5]	787,031	[4],[6]
Dispositions		0	[2],[7]	0	[4],[8]
Fair Value, Ending Balance	[2]	720,538		577,277
Investment, Identifier [Axis]: Controlled Affiliates, Fishbowl, Inc., Senior Secured 1st Lien Term Loan, SOFR + 5%, 1% SOFR Floor, due 05/27/2027
Schedule Of Investments [Line Items]
Dividends or Interest		297,566	[1],[2]	577,752	[3],[4]
Fair Value, Beginning Balance		12,089,579	[2]	0	[4]
Net realized gain or loss		0	[2]	0	[4]
Net increase or decrease in unrealized appreciation or depreciation		0	[2]	0	[4]
Acquisitions		0	[2],[5]	12,089,579	[4],[6]
Dispositions		0	[2],[7]	0	[4],[8]
Fair Value, Ending Balance	[2]	12,089,579		12,089,579
Investment, Identifier [Axis]: Controlled Affiliates, Kawa Solar Holdings Limited, Bank Guarantee Credit Facility, 0%, due 12/31/22
Schedule Of Investments [Line Items]
Dividends or Interest		0	[1],[2]	0	[3],[4]
Fair Value, Beginning Balance		101,315	[2]	101,315	[4]
Net realized gain or loss		0	[2]	0	[4]
Net increase or decrease in unrealized appreciation or depreciation		0	[2]	0	[4]
Acquisitions		0	[2],[5]	0	[4],[6]
Dispositions		0	[2],[7]	0	[4],[8]
Fair Value, Ending Balance	[2]	101,315		101,315
Investment, Identifier [Axis]: Controlled Affiliates, Kawa Solar Holdings Limited, Ordinary Shares
Schedule Of Investments [Line Items]
Dividends or Interest		0	[1],[2]	0	[3],[4]
Fair Value, Beginning Balance		0	[2]	0	[4]
Net realized gain or loss		0	[2]	0	[4]
Net increase or decrease in unrealized appreciation or depreciation		0	[2]	0	[4]
Acquisitions		0	[2],[5]	0	[4],[6]
Dispositions		0	[2],[7]	0	[4],[8]
Fair Value, Ending Balance	[2]	0		0
Investment, Identifier [Axis]: Controlled Affiliates, Kawa Solar Holdings Limited, Revolving Credit Facility, 0%, due 12/31/22
Schedule Of Investments [Line Items]
Dividends or Interest		0	[1],[2]	0	[3],[4]
Fair Value, Beginning Balance		1,862,701	[2]	1,955,145	[4]
Net realized gain or loss		0	[2]	0	[4]
Net increase or decrease in unrealized appreciation or depreciation		0	[2]	(92,444)	[4]
Acquisitions		0	[2],[5]	0	[4],[6]
Dispositions		0	[2],[7]	0	[4],[8]
Fair Value, Ending Balance	[2]	1,862,701		1,862,701
Investment, Identifier [Axis]: Controlled Affiliates, Kawa Solar Holdings Limited, Series B Preferred Shares
Schedule Of Investments [Line Items]
Dividends or Interest		0	[1],[2]	0	[3],[4]
Fair Value, Beginning Balance		0	[2]	0	[4]
Net realized gain or loss		0	[2]	0	[4]
Net increase or decrease in unrealized appreciation or depreciation		0	[2]	0	[4]
Acquisitions		0	[2],[5]	0	[4],[6]
Dispositions		0	[2],[7]	0	[4],[8]
Fair Value, Ending Balance	[2]	0		0
Investment, Identifier [Axis]: Non-Controlled Affiliates
Schedule Of Investments [Line Items]
Dividends or Interest		725,310	[9],[10]	2,686,390	[11],[12]
Fair Value, Beginning Balance		69,089,697	[10]	97,207,404	[12]
Net realized gain or loss		0	[10]	11,172,439	[11],[12]
Net increase or decrease in unrealized appreciation or depreciation		(2,127,127)	[10]	(27,307,855)	[12]
Acquisitions		634,118	[10],[13]	2,357,073	[12],[14]
Dispositions		0	[10],[15]	14,339,364	[12],[16]
Fair Value, Ending Balance	[10]	67,596,688		69,089,697
Investment, Identifier [Axis]: Non-Controlled Affiliates, Iracore International Holdings, Inc., Senior Secured 1st Lien Term Loan, LIBOR + 9%, 1% LIBOR Floor, due 4/12/24
Schedule Of Investments [Line Items]
Dividends or Interest		45,536	[9],[10]	148,806	[11],[12]
Fair Value, Beginning Balance		1,324,140	[10]	1,324,140	[12]
Net realized gain or loss		0	[10]	0	[11],[12]
Net increase or decrease in unrealized appreciation or depreciation		0	[10]	0	[12]
Acquisitions		0	[10],[13]	0	[12],[14]
Dispositions		0	[10],[15]	0	[12],[16]
Fair Value, Ending Balance	[10]	1,324,140		1,324,140
Investment, Identifier [Axis]: Non-Controlled Affiliates, Iracore Investments Holdings, Inc., Class A Common Stock
Schedule Of Investments [Line Items]
Dividends or Interest		0	[9],[10]	0	[11],[12]
Fair Value, Beginning Balance		2,983,163	[10]	4,344,746	[12]
Net realized gain or loss		0	[10]	0	[11],[12]
Net increase or decrease in unrealized appreciation or depreciation		(1,016,787)	[10]	(1,361,583)	[12]
Acquisitions		0	[10],[13]	0	[12],[14]
Dispositions		0	[10],[15]	0	[12],[16]
Fair Value, Ending Balance	[10]	1,966,376		2,983,163
Investment, Identifier [Axis]: Non-Controlled Affiliates, NEG Parent, LLC (CORE Entertainment, Inc.), Class A Units
Schedule Of Investments [Line Items]
Dividends or Interest		0	[9],[10]	0	[11],[12]
Fair Value, Beginning Balance		0	[10]	15,224,581	[12]
Net realized gain or loss		0	[10]	9,653,044	[11],[12]
Net increase or decrease in unrealized appreciation or depreciation		0	[10]	(12,451,775)	[12]
Acquisitions		0	[10],[13]	0	[12],[14]
Dispositions		0	[10],[15]	12,425,850	[12],[16]
Fair Value, Ending Balance	[10]	0		0
Investment, Identifier [Axis]: Non-Controlled Affiliates, NEG Parent, LLC (CORE Entertainment, Inc.), Class A Warrants to Purchase Class A Units
Schedule Of Investments [Line Items]
Dividends or Interest		0	[9],[10]	0	[11],[12]
Fair Value, Beginning Balance		0	[10]	1,409,955	[12]
Net realized gain or loss		0	[10]	820,337	[11],[12]
Net increase or decrease in unrealized appreciation or depreciation		0	[10]	(1,213,868)	[12]
Acquisitions		0	[10],[13]	0	[12],[14]
Dispositions		0	[10],[15]	1,016,424	[12],[16]
Fair Value, Ending Balance	[10]	0		0
Investment, Identifier [Axis]: Non-Controlled Affiliates, NEG Parent, LLC (CORE Entertainment, Inc.), Class B Warrants to Purchase Class A Units
Schedule Of Investments [Line Items]
Dividends or Interest		0	[9],[10]	0	[11],[12]
Fair Value, Beginning Balance		0	[10]	1,423,944	[12]
Net realized gain or loss		0	[10]	699,058	[11],[12]
Net increase or decrease in unrealized appreciation or depreciation		0	[10]	(1,225,912)	[12]
Acquisitions		0	[10],[13]	0	[12],[14]
Dispositions		0	[10],[15]	897,090	[12],[16]
Fair Value, Ending Balance	[10]	0		0
Investment, Identifier [Axis]: Non-Controlled Affiliates, TVG-Edmentum Holdings, LLC, Series A Preferred Units
Schedule Of Investments [Line Items]
Dividends or Interest		45,650	[9],[10]	180,519	[11],[12]
Fair Value, Beginning Balance		0	[10]	0	[12]
Net realized gain or loss		0	[10]	0	[11],[12]
Net increase or decrease in unrealized appreciation or depreciation		0	[10]	0	[12]
Acquisitions		0	[10],[13]	0	[12],[14]
Dispositions		0	[10],[15]	0	[12],[16]
Fair Value, Ending Balance	[10]	0		0
Investment, Identifier [Axis]: Non-Controlled Affiliates, TVG-Edmentum Holdings, LLC, Series B-1 Common Units
Schedule Of Investments [Line Items]
Dividends or Interest		634,124	[9],[10]	2,357,065	[11],[12]
Fair Value, Beginning Balance		32,391,197	[10]	36,740,019	[12]
Net realized gain or loss		0	[10]	0	[11],[12]
Net increase or decrease in unrealized appreciation or depreciation		(872,228)	[10]	(6,705,895)	[12]
Acquisitions		634,117	[10],[13]	2,357,073	[12],[14]
Dispositions		0	[10],[15]	0	[12],[16]
Fair Value, Ending Balance	[10]	32,153,086		32,391,197
Investment, Identifier [Axis]: Non-Controlled Affiliates, TVG-Edmentum Holdings, LLC, Series B-2 Common Units
Schedule Of Investments [Line Items]
Dividends or Interest		0	[9]	0	[11],[12]
Fair Value, Beginning Balance		32,391,197	[10]	36,740,019	[12]
Net realized gain or loss		0	[10]	0	[11],[12]
Net increase or decrease in unrealized appreciation or depreciation		(238,112)	[10]	(4,348,822)	[12]
Acquisitions		1	[10],[13]	0	[12],[14]
Dispositions		0	[10],[15]	0	[12],[16]
Fair Value, Ending Balance	[10]	$ 32,153,086		$ 32,391,197

[1] Also includes fee income as applicable.

[2] The issuers of the securities listed on this schedule are considered controlled affiliates under the 1940 Act due to the ownership by the Company of more than 25% of the issuers' voting securities.

[3] Also includes fee and lease income as applicable.

[4] The issuers of the securities listed on this schedule are considered controlled affiliates under the 1940 Act due to the ownership by the Company of more than 25% of the issuers' voting securities.

[5] Acquisitions include new purchases, PIK income and amortization of original issue and market discounts.

[6] Acquisitions include new purchases, PIK income and amortization of original issue and market discounts.

[7] Dispositions include decreases in the cost basis from sales and paydowns.

[8] Dispositions include decreases in the cost basis from sales and paydowns.

[9] Also includes fee income as applicable.

[10] The issuers of the securities listed on this schedule are considered non-controlled affiliates under the 1940 Act due to the ownership by the Company of 5% to 25% of the issuers' voting securities.

[11] Also includes fee and lease income as applicable.

[12] The issuers of the securities listed on this schedule are considered non-controlled affiliates under the 1940 Act due to the ownership by the Company of 5% to 25% of the issuers' voting securities.

[13] Acquisitions include new purchases, PIK income and amortization of original issue and market discounts.

[14] Acquisitions include new purchases, PIK income and amortization of original issue and market discounts.

[15] Dispositions include decreases in the cost basis from sales and paydowns.

[16] Dispositions include decreases in the cost basis from sales and paydowns.