PORTFOLIO INVESTMENTS AND FAIR VALUE - Geographical Concentration of Investment Portfolio (Details) - USD ($)	Jun. 30, 2023	Dec. 31, 2022
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 922,796,573	$ 875,823,177
Fair value of investments	$ 881,666,450	$ 844,733,638
% of Total Investments at fair value	100.00%	100.00%
California
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 179,278,481	$ 167,833,384
Fair value of investments	$ 177,882,024	$ 165,340,017
% of Total Investments at fair value	20.17%	19.57%
Texas
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 206,004,010	$ 191,422,143
Fair value of investments	$ 182,903,863	$ 171,165,597
% of Total Investments at fair value	20.74%	20.26%
Florida
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 83,269,639	$ 60,593,839
Fair value of investments	$ 82,798,145	$ 59,421,775
% of Total Investments at fair value	9.39%	7.03%
Illinois
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 59,329,153	$ 64,421,998
Fair value of investments	$ 46,656,232	$ 53,218,615
% of Total Investments at fair value	5.29%	6.30%
Arizona
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 44,823,978	$ 43,129,283
Fair value of investments	$ 46,868,463	$ 44,277,625
% of Total Investments at fair value	5.32%	5.24%
Pennsylvania
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 48,569,282	$ 42,899,504
Fair value of investments	$ 48,352,773	$ 41,889,344
% of Total Investments at fair value	5.48%	4.96%
Ohio
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 33,676,009	$ 34,223,452
Fair value of investments	$ 36,978,837	$ 37,333,236
% of Total Investments at fair value	4.19%	4.42%
Washington
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 24,371,956	$ 28,978,375
Fair value of investments	$ 24,362,084	$ 28,480,471
% of Total Investments at fair value	2.76%	3.37%
New Jersey
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 11,169,394	$ 25,395,054
Fair value of investments	$ 11,600,921	$ 25,140,343
% of Total Investments at fair value	1.32%	2.98%
Wisconsin
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 27,476,373	$ 27,533,402
Fair value of investments	$ 25,008,264	$ 24,271,761
% of Total Investments at fair value	2.84%	2.87%
South Carolina
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 23,876,474	$ 19,089,373
Fair value of investments	$ 23,476,376	$ 18,654,782
% of Total Investments at fair value	2.66%	2.21%
District Of Columbia
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 14,099,046	$ 17,236,556
Fair value of investments	$ 16,505,944	$ 21,124,347
% of Total Investments at fair value	1.87%	2.50%
Georgia
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 10,276,132	$ 10,919,642
Fair value of investments	$ 18,395,202	$ 19,692,757
% of Total Investments at fair value	2.09%	2.33%
Minnesota
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 16,740,672	$ 16,972,086
Fair value of investments	$ 16,605,656	$ 15,952,072
% of Total Investments at fair value	1.88%	1.89%
Maryland
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 16,742,023	$ 16,824,077
Fair value of investments	$ 16,640,662	$ 16,576,554
% of Total Investments at fair value	1.89%	1.96%
Colorado
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 20,046,931	$ 15,204,934
Fair value of investments	$ 19,410,156	$ 14,295,470
% of Total Investments at fair value	2.20%	1.69%
Indiana
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 14,369,701	$ 14,346,082
Fair value of investments	$ 14,585,360	$ 14,245,432
% of Total Investments at fair value	1.65%	1.69%
Canada
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 12,679,688	$ 13,333,737
Fair value of investments	$ 12,698,047	$ 13,266,669
% of Total Investments at fair value	1.44%	1.57%
United Kingdom
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 20,669,119	$ 20,530,087
Fair value of investments	$ 2,580,973	$ 14,445,481
% of Total Investments at fair value	0.29%	1.71%
Tennessee
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 11,419,666
Fair value of investments	$ 11,507,745
% of Total Investments at fair value	1.31%
North Carolina
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 10,410,606	$ 10,461,551
Fair value of investments	$ 11,156,286	$ 10,649,232
% of Total Investments at fair value	1.27%	1.26%
Massachusetts
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 10,183,236	$ 10,215,356
Fair value of investments	$ 10,557,554	$ 10,527,659
% of Total Investments at fair value	1.20%	1.25%
Idaho
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 9,140,420	$ 9,873,093
Fair value of investments	$ 9,216,892	$ 9,863,103
% of Total Investments at fair value	1.05%	1.17%
Missouri
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 9,100,052	$ 9,142,111
Fair value of investments	$ 9,743,747	$ 9,656,287
% of Total Investments at fair value	1.11%	1.14%
New York
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 5,074,532	$ 5,096,152
Fair value of investments	$ 5,174,244	$ 5,096,008
% of Total Investments at fair value	0.59%	0.61%
Michigan
Investment Holdings 1 [Line Items]
Investments, amortized cost		$ 147,906
Fair value of investments		$ 149,001
% of Total Investments at fair value		0.02%