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SBA-GUARANTEED DEBENTURES - Schedule of Interest Expense and Amortized Fees on SBA-guaranteed Debentures (Details) - SBA-guaranteed Debentures - USD ($)
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
SBA-GUARANTEED DEBENTURES    
Interest expense $ 2,282,892 $ 2,540,360
Debenture fee amortization 166,986 188,984
Total interest and financing expenses $ 2,449,878 $ 2,729,344
Weighted average interest rate 3.30% 3.30%
Effective interest rate (including fee amortization) 3.50% 3.50%
Average debt outstanding $ 284,700,000 $ 316,694,444
Cash paid for interest $ 4,803,285 $ 5,188,661