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PORTFOLIO INVESTMENTS AND FAIR VALUE - Industry Concentration of Investment Portfolio (Details) - USD ($)
Mar. 31, 2026
Dec. 31, 2025
PORTFOLIO INVESTMENTS AND FAIR VALUE    
Investments, amortized cost $ 1,015,318,318 $ 1,026,139,686
Fair value of investments $ 989,994,564 $ 1,007,623,395
% of Total Investments at fair value 100.00% 100.00%
Services: Business    
PORTFOLIO INVESTMENTS AND FAIR VALUE    
Investments, amortized cost $ 279,930,309 $ 265,116,204
Fair value of investments $ 279,261,336 $ 266,803,107
% of Total Investments at fair value 28.21% 26.48%
High Tech Industries    
PORTFOLIO INVESTMENTS AND FAIR VALUE    
Investments, amortized cost $ 83,330,629 $ 103,212,518
Fair value of investments $ 86,899,397 $ 106,937,496
% of Total Investments at fair value 8.78% 10.61%
Healthcare & Pharmaceuticals    
PORTFOLIO INVESTMENTS AND FAIR VALUE    
Investments, amortized cost $ 97,090,678 $ 92,736,458
Fair value of investments $ 97,046,413 $ 92,182,392
% of Total Investments at fair value 9.80% 9.15%
Media: Advertising, Printing & Publishing    
PORTFOLIO INVESTMENTS AND FAIR VALUE    
Investments, amortized cost $ 66,726,987 $ 78,965,841
Fair value of investments $ 65,691,326 $ 79,030,004
% of Total Investments at fair value 6.64% 7.84%
Capital Equipment    
PORTFOLIO INVESTMENTS AND FAIR VALUE    
Investments, amortized cost $ 61,564,601 $ 61,644,736
Fair value of investments $ 65,891,385 $ 65,191,527
% of Total Investments at fair value 6.66% 6.47%
Beverage & Food    
PORTFOLIO INVESTMENTS AND FAIR VALUE    
Investments, amortized cost $ 55,445,308 $ 54,323,129
Fair value of investments $ 56,582,066 $ 58,129,551
% of Total Investments at fair value 5.72% 5.77%
Consumer Goods: Non-Durable    
PORTFOLIO INVESTMENTS AND FAIR VALUE    
Investments, amortized cost $ 61,572,096 $ 61,701,885
Fair value of investments $ 52,712,306 $ 53,502,252
% of Total Investments at fair value 5.32% 5.31%
Services: Consumer    
PORTFOLIO INVESTMENTS AND FAIR VALUE    
Investments, amortized cost $ 42,752,415 $ 42,793,668
Fair value of investments $ 40,715,215 $ 40,569,003
% of Total Investments at fair value 4.11% 4.03%
Construction & Building    
PORTFOLIO INVESTMENTS AND FAIR VALUE    
Investments, amortized cost $ 36,423,448 $ 36,950,838
Fair value of investments $ 36,602,096 $ 37,219,214
% of Total Investments at fair value 3.70% 3.69%
Consumer Goods: Durable    
PORTFOLIO INVESTMENTS AND FAIR VALUE    
Investments, amortized cost $ 35,878,938 $ 35,569,885
Fair value of investments $ 31,267,997 $ 31,655,077
% of Total Investments at fair value 3.16% 3.14%
Aerospace & Defense    
PORTFOLIO INVESTMENTS AND FAIR VALUE    
Investments, amortized cost $ 28,847,730 $ 28,192,548
Fair value of investments $ 26,526,734 $ 25,968,951
% of Total Investments at fair value 2.68% 2.58%
Environmental Industries    
PORTFOLIO INVESTMENTS AND FAIR VALUE    
Investments, amortized cost $ 20,510,466 $ 20,190,193
Fair value of investments $ 24,397,581 $ 22,323,773
% of Total Investments at fair value 2.46% 2.22%
Chemicals, Plastics, & Rubber    
PORTFOLIO INVESTMENTS AND FAIR VALUE    
Investments, amortized cost $ 19,723,334 $ 20,054,202
Fair value of investments $ 19,622,459 $ 19,792,281
% of Total Investments at fair value 1.98% 1.96%
Transportation & Logistics    
PORTFOLIO INVESTMENTS AND FAIR VALUE    
Investments, amortized cost $ 16,690,858 $ 16,593,938
Fair value of investments $ 16,769,097 $ 16,791,026
% of Total Investments at fair value 1.69% 1.67%
Media: Broadcasting & Subscription    
PORTFOLIO INVESTMENTS AND FAIR VALUE    
Investments, amortized cost $ 12,029,788 $ 12,057,869
Fair value of investments $ 14,864,681 $ 15,196,592
% of Total Investments at fair value 1.50% 1.51%
Retail    
PORTFOLIO INVESTMENTS AND FAIR VALUE    
Investments, amortized cost $ 14,645,681 $ 14,715,878
Fair value of investments $ 14,677,856 $ 14,756,518
% of Total Investments at fair value 1.48% 1.46%
Energy: Oil & Gas    
PORTFOLIO INVESTMENTS AND FAIR VALUE    
Investments, amortized cost $ 11,793,290 $ 11,802,297
Fair value of investments $ 11,237,570 $ 11,077,160
% of Total Investments at fair value 1.14% 1.10%
Hotel, Gaming, & Leisure    
PORTFOLIO INVESTMENTS AND FAIR VALUE    
Investments, amortized cost $ 9,172,112 $ 9,181,622
Fair value of investments $ 9,307,731 $ 9,331,063
% of Total Investments at fair value 0.94% 0.93%
Wholesale    
PORTFOLIO INVESTMENTS AND FAIR VALUE    
Investments, amortized cost $ 8,877,153 $ 8,900,149
Fair value of investments $ 8,893,339 $ 8,921,351
% of Total Investments at fair value 0.90% 0.89%
FIRE: Real Estate    
PORTFOLIO INVESTMENTS AND FAIR VALUE    
Investments, amortized cost $ 19,179,572 $ 18,419,200
Fair value of investments $ 6,069,487 $ 8,379,604
% of Total Investments at fair value 0.61% 0.83%
Media: Diversified & Production    
PORTFOLIO INVESTMENTS AND FAIR VALUE    
Investments, amortized cost $ 7,523,041 $ 7,495,599
Fair value of investments $ 7,472,354 $ 7,566,694
% of Total Investments at fair value 0.75% 0.75%
Containers, Packaging, & Glass    
PORTFOLIO INVESTMENTS AND FAIR VALUE    
Investments, amortized cost $ 20,730,924 $ 20,714,369
Fair value of investments $ 8,403,531 $ 6,360,684
% of Total Investments at fair value 0.85% 0.63%
Finance    
PORTFOLIO INVESTMENTS AND FAIR VALUE    
Fair value of investments $ 5,704,257 $ 6,187,401
% of Total Investments at fair value 0.58% 0.61%
Education    
PORTFOLIO INVESTMENTS AND FAIR VALUE    
Investments, amortized cost $ 4,878,960 $ 4,806,660
Fair value of investments $ 3,378,350 $ 3,750,674
% of Total Investments at fair value 0.34% 0.37%