PORTFOLIO INVESTMENTS AND FAIR VALUE - Geographical concentration of investment portfolio (Details) - USD ($)	Jun. 30, 2023	Dec. 31, 2022
Investment Holdings 1 [Line Items]
Cost	$ 187,087,867	$ 158,022,677
Fair Value	$ 188,323,515	$ 157,504,755
% of Total Investments	100.00%	100.00%
Texas
Investment Holdings 1 [Line Items]
Cost	$ 46,914,981	$ 41,689,874
Fair Value	$ 47,584,275	$ 41,670,626
% of Total Investments	25.26%	26.46%
Florida
Investment Holdings 1 [Line Items]
Cost	$ 40,551,893	$ 25,824,710
Fair Value	$ 40,635,492	$ 25,639,155
% of Total Investments	21.57%	16.28%
New York
Investment Holdings 1 [Line Items]
Cost	$ 23,611,915	$ 23,971,538
Fair Value	$ 24,022,550	$ 23,990,132
% of Total Investments	12.76%	15.23%
Illinois
Investment Holdings 1 [Line Items]
Cost	$ 14,132,446	$ 13,199,633
Fair Value	$ 13,664,574	$ 12,899,144
% of Total Investments	7.26%	8.19%
United Kingdom
Investment Holdings 1 [Line Items]
Cost	$ 11,343,545	$ 9,977,695
Fair Value	$ 11,405,472	$ 9,971,437
% of Total Investments	6.06%	6.33%
Arizona
Investment Holdings 1 [Line Items]
Cost	$ 7,923,725	$ 5,161,586
Fair Value	$ 8,075,572	$ 5,259,750
% of Total Investments	4.29%	3.34%
Washington
Investment Holdings 1 [Line Items]
Cost	$ 7,139,165	$ 6,892,968
Fair Value	$ 7,156,607	$ 6,750,961
% of Total Investments	3.80%	4.29%
Wisconsin
Investment Holdings 1 [Line Items]
Cost	$ 6,551,283	$ 4,940,698
Fair Value	$ 6,828,849	$ 5,031,797
% of Total Investments	3.63%	3.19%
Indiana
Investment Holdings 1 [Line Items]
Cost	$ 6,394,525	$ 6,384,015
Fair Value	$ 6,490,494	$ 6,339,226
% of Total Investments	3.45%	4.02%
Maryland
Investment Holdings 1 [Line Items]
Cost	$ 5,900,960	$ 6,094,066
Fair Value	$ 5,760,940	$ 5,955,848
% of Total Investments	3.06%	3.78%
Tennessee
Investment Holdings 1 [Line Items]
Cost	$ 5,126,448
Fair Value	$ 5,165,989
% of Total Investments	2.74%
Idaho
Investment Holdings 1 [Line Items]
Cost	$ 4,067,492	$ 4,393,532
Fair Value	$ 4,101,522	$ 4,389,086
% of Total Investments	2.18%	2.79%
Pennsylvania
Investment Holdings 1 [Line Items]
Cost	$ 2,947,177
Fair Value	$ 2,947,176
% of Total Investments	1.56%
South Carolina
Investment Holdings 1 [Line Items]
Cost	$ 2,277,017
Fair Value	$ 2,278,708
% of Total Investments	1.21%
Colorado
Investment Holdings 1 [Line Items]
Cost	$ 2,205,295
Fair Value	$ 2,205,295
% of Total Investments	1.17%
Michigan
Investment Holdings 1 [Line Items]
Cost		$ 9,492,362
Fair Value		$ 9,607,593
% of Total Investments		6.10%