PORTFOLIO INVESTMENTS AND FAIR VALUE - Industry concentration of investment portfolio (Details) - USD ($)	Dec. 31, 2025	Dec. 31, 2024
Investment Holdings 1 [Line Items]
Cost	$ 396,791,982	$ 297,791,269
Fair Value	$ 400,131,924	$ 300,732,065
% of Total Investments at Fair Value	100.00%	100.00%
Services: Business
Investment Holdings 1 [Line Items]
Cost	$ 89,567,846	$ 50,117,721
Fair Value	$ 88,693,867	$ 51,333,196
% of Total Investments at Fair Value	22.18%	17.06%
High Tech Industries
Investment Holdings 1 [Line Items]
Cost	$ 49,010,176	$ 37,580,707
Fair Value	$ 50,269,878	$ 38,418,760
% of Total Investments at Fair Value	12.56%	12.78%
Healthcare & Pharmaceuticals
Investment Holdings 1 [Line Items]
Cost	$ 48,453,123	$ 33,078,396
Fair Value	$ 49,442,697	$ 33,123,393
% of Total Investments at Fair Value	12.36%	11.01%
Capital Equipment
Investment Holdings 1 [Line Items]
Cost	$ 39,615,369	$ 26,634,637
Fair Value	$ 41,025,852	$ 27,544,790
% of Total Investments at Fair Value	10.25%	9.16%
Media: Advertising, Printing & Publishing
Investment Holdings 1 [Line Items]
Cost	$ 25,391,544	$ 19,321,733
Fair Value	$ 24,600,455	$ 19,051,900
% of Total Investments at Fair Value	6.15%	6.34%
Construction & Building
Investment Holdings 1 [Line Items]
Cost	$ 22,265,430	$ 13,290,426
Fair Value	$ 22,580,411	$ 13,638,879
% of Total Investments at Fair Value	5.64%	4.54%
Services: Consumer
Investment Holdings 1 [Line Items]
Cost	$ 20,534,718	$ 19,416,695
Fair Value	$ 20,334,410	$ 17,380,571
% of Total Investments at Fair Value	5.08%	5.78%
Consumer Goods: Non-Durable
Investment Holdings 1 [Line Items]
Cost	$ 17,729,105	$ 19,459,391
Fair Value	$ 19,164,105	$ 20,424,922
% of Total Investments at Fair Value	4.79%	6.79%
Beverage & Food
Investment Holdings 1 [Line Items]
Cost	$ 16,571,541	$ 13,801,250
Fair Value	$ 16,445,790	$ 13,952,930
% of Total Investments at Fair Value	4.11%	4.64%
Chemicals, Plastics, & Rubber
Investment Holdings 1 [Line Items]
Cost	$ 14,236,397	$ 17,043,322
Fair Value	$ 14,131,809	$ 17,041,973
% of Total Investments at Fair Value	3.53%	5.67%
Media: Diversified & Production
Investment Holdings 1 [Line Items]
Cost	$ 12,111,013	$ 12,153,794
Fair Value	$ 11,899,148	$ 12,093,869
% of Total Investments at Fair Value	2.97%	4.02%
Consumer Goods: Durable
Investment Holdings 1 [Line Items]
Cost	$ 8,379,684	$ 8,562,343
Fair Value	$ 8,649,708	$ 8,638,156
% of Total Investments at Fair Value	2.16%	2.87%
Energy: Oil & Gas
Investment Holdings 1 [Line Items]
Cost	$ 8,144,225	$ 7,800,160
Fair Value	$ 8,500,887	$ 8,232,957
% of Total Investments at Fair Value	2.12%	2.74%
Environmental Industries
Investment Holdings 1 [Line Items]
Cost	$ 7,603,889	$ 9,482,195
Fair Value	$ 7,162,621	$ 9,782,473
% of Total Investments at Fair Value	1.79%	3.25%
Retail
Investment Holdings 1 [Line Items]
Cost	$ 6,547,870	$ 6,293,227
Fair Value	$ 6,545,924	$ 6,252,832
% of Total Investments at Fair Value	1.64%	2.08%
Wholesale
Investment Holdings 1 [Line Items]
Cost	$ 5,886,684
Fair Value	$ 5,873,214
% of Total Investments at Fair Value	1.47%
Hotel, Gaming, & Leisure
Investment Holdings 1 [Line Items]
Cost	$ 4,743,368	$ 3,755,272
Fair Value	$ 4,811,148	$ 3,820,464
% of Total Investments at Fair Value	1.20%	1.27%