CONSOLIDATED STATEMENTS OF CHANGES IN NET ASSETS (unaudited) - USD ($)	3 Months Ended					9 Months Ended		12 Months Ended		141 Months Ended
	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Dec. 31, 2021	Sep. 30, 2023
Investment Company, Changes in Net Assets
Beginning balance		$ 275,776,613	$ 279,866,118	$ 285,036,401	$ 285,111,233	$ 275,776,613	$ 285,111,233	$ 285,111,233
Beginning balance (shares)		19,666,769				19,666,769
Net investment income	$ 10,820,799	$ 9,067,620		6,174,571	5,514,183
Net realized gain on non-controlled, non-affiliated investments	600,403	34,967	1,553,450	(352,723)	3,458,090	$ 324,782	4,658,817
Net realized loss on foreign currency translation	(22,166)	(39,912)			(7,350)
Net change in unrealized depreciation on non-controlled, non-affiliated investments	(13,793,320)	(4,249,642)		(4,289,591)	(3,721,602)
Net change in unrealized appreciation on foreign currency translations	(2,794)	1,874		(35,754)
Provision for taxes on unrealized appreciation on investments	(312)	(78,760)		(160,656)	(21,157)
Distributions from net investment income	(9,269,208)	(7,951,284)		(6,643,663)	(5,464,666)
Issuance of common stock, net of offering costs	21,467,350	$ 8,290,569		137,533	167,670
Issuance of common stock, net of offering costs (shares)		581,614						149,174	31,592	24,125,642
Ending balance	$ 318,125,780	$ 280,852,045		279,866,118	285,036,401	$ 318,125,780		$ 275,776,613	$ 285,111,233	$ 318,125,780
Ending balance (shares)	24,125,642					24,125,642		19,666,769		24,125,642
Common Stock
Investment Company, Changes in Net Assets
Beginning balance		$ 19,667	$ 19,546	$ 19,533	$ 19,518	$ 19,667	$ 19,518	$ 19,518
Beginning balance (shares)		19,666,769	19,545,935	19,532,519	19,517,595	19,666,769	19,517,595	19,517,595
Issuance of common stock, net of offering costs	$ 1,567	$ 581		$ 13	$ 15
Issuance of common stock, net of offering costs (shares)	1,567,738	581,614		13,416	14,924
Ending balance	$ 24,125	$ 20,248		$ 19,546	$ 19,533	$ 24,125		$ 19,667	$ 19,518	$ 24,125
Ending balance (shares)	24,125,642	20,248,383		19,545,935	19,532,519	24,125,642		19,666,769	19,517,595	24,125,642
Paid-in capital
Investment Company, Changes in Net Assets
Beginning balance		$ 275,114,720	$ 274,864,296	$ 274,726,776	$ 274,559,121	$ 275,114,720	$ 274,559,121	$ 274,559,121
Issuance of common stock, net of offering costs	$ 21,465,783	8,289,988		137,520	167,655
Ending balance	337,289,265	283,404,708		274,864,296	274,726,776	337,289,265		275,114,720	$ 274,559,121	$ 337,289,265
Accumulated undistributed surplus (deficit)
Investment Company, Changes in Net Assets
Beginning balance		642,226	$ 4,982,276	10,290,092	10,532,594	642,226	$ 10,532,594	10,532,594
Net investment income	10,820,799	9,067,620		6,174,571	5,514,183
Net realized gain on non-controlled, non-affiliated investments	600,403	34,967		(352,723)	3,458,090
Net realized loss on foreign currency translation	(22,166)	(39,912)			(7,350)
Net change in unrealized depreciation on non-controlled, non-affiliated investments	(13,793,320)	(4,249,642)		(4,289,591)	(3,721,602)
Net change in unrealized appreciation on foreign currency translations	(2,794)	1,874		(35,754)
Provision for taxes on unrealized appreciation on investments	(312)	(78,760)		(160,656)	(21,157)
Distributions from net investment income	(9,269,208)	(7,951,284)		(6,643,663)	(5,464,666)
Ending balance	$ (19,187,610)	$ (2,572,911)		$ 4,982,276	$ 10,290,092	$ (19,187,610)		$ 642,226	$ 10,532,594	$ (19,187,610)