v3.26.1
Note 4 - Fair Value Measurements - Quantitative Information About Level 3 Fair Value Measurements (Details)
Jun. 30, 2026
USD ($)
Dec. 31, 2025
USD ($)
Investments, fair value $ 262,645,641 $ 262,216,317
Senior Secured Trade Finance Participations [Member]    
Investments, fair value 24,859,079 26,493,018
Senior Secured Term Loan [Member]    
Investments, fair value 128,864,890 123,807,284
Senior Secured Term Loan Participations [Member]    
Investments, fair value 66,297,945 71,371,727
Other Investment Companies [Member]    
Investments, fair value 11,816,853 11,451,817
Convertible Debt [Member]    
Investments, fair value 30,806,874 29,092,471
Warrant [Member]    
Investments, fair value 0 0
Fair Value, Inputs, Level 3 [Member]    
Investments, fair value 262,645,641 262,216,317
Fair Value, Inputs, Level 3 [Member] | Senior Secured Trade Finance Participations [Member]    
Investments, fair value 24,859,079 26,493,018
Fair Value, Inputs, Level 3 [Member] | Senior Secured Trade Finance Participations [Member] | Collateral Based Approach Valuation Technique [Member]    
Investments, fair value $ 6,310,193 [1] $ 6,926,432 [2]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Trade Finance Participations [Member] | Collateral Based Approach Valuation Technique [Member] | Measurement Input, Collateral Coverage Ratio [Member] | Minimum [Member]    
Investment, measurement input [4] 1.65 [1],[3] 1.24 [2],[5]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Trade Finance Participations [Member] | Collateral Based Approach Valuation Technique [Member] | Measurement Input, Collateral Coverage Ratio [Member] | Maximum [Member]    
Investment, measurement input [4] 6.45 [1],[3] 1.65 [2],[5]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Trade Finance Participations [Member] | Collateral Based Approach Valuation Technique [Member] | Measurement Input, Discount Rate [Member] | Minimum [Member]    
Investment, measurement input [4] 0.1175 [1],[3] 0.1175 [2],[5]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Trade Finance Participations [Member] | Collateral Based Approach Valuation Technique [Member] | Measurement Input, Discount Rate [Member] | Maximum [Member]    
Investment, measurement input [4] 0.1767 [1],[3] 0.1767 [2],[5]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Trade Finance Participations [Member] | Collateral Based Approach Valuation Technique [Member] | Measurement Input, Discount Rate [Member] | Weighted Average [Member]    
Investment, measurement input [4] 0.1543 [1],[3] 0.1553 [2],[5]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Trade Finance Participations [Member] | Collateral Based Approach Valuation Technique [Member] | Measurement Input, Expected Term [Member] | Minimum [Member]    
Investment, measurement input [4] 1 [1],[3] 1 [2],[5]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Trade Finance Participations [Member] | Collateral Based Approach Valuation Technique [Member] | Measurement Input, Expected Term [Member] | Maximum [Member]    
Investment, measurement input [4] 3 [1],[3] 3.3 [2],[5]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Trade Finance Participations [Member] | Valuation, Income Approach [Member]    
Investment, measurement input [2],[4],[5],[6]  
Investments, fair value $ 18,548,886 [7] $ 19,566,586 [6]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Trade Finance Participations [Member] | Valuation, Income Approach [Member] | Measurement Input, Discount Rate [Member] | Minimum [Member]    
Investment, measurement input [4] 0.15 [3],[7] 0.15 [5],[6]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Trade Finance Participations [Member] | Valuation, Income Approach [Member] | Measurement Input, Discount Rate [Member] | Maximum [Member]    
Investment, measurement input [4] 0.215 [3],[7] 0.205 [5],[6]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Trade Finance Participations [Member] | Valuation, Income Approach [Member] | Measurement Input, Discount Rate [Member] | Weighted Average [Member]    
Investment, measurement input [4] 0.1942 [3],[7] 0.188 [5],[6]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Trade Finance Participations [Member] | Valuation, Income Approach [Member] | Measurement Input, Expected Term [Member] | Minimum [Member]    
Investment, measurement input [4] 4 [3],[7] 1 [5],[6]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Trade Finance Participations [Member] | Valuation, Income Approach [Member] | Measurement Input, Expected Term [Member] | Maximum [Member]    
Investment, measurement input [4] 13.1 [3],[7] 13.6 [5],[6]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan [Member]    
Investments, fair value $ 128,864,890 $ 123,807,284
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan [Member] | Valuation, Income Approach [Member]    
Investments, fair value $ 114,035,365 [7] $ 106,838,273 [6]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan [Member] | Valuation, Income Approach [Member] | Measurement Input, Discount Rate [Member] | Minimum [Member]    
Investment, measurement input [4] 0.155 [3],[7] 0.155 [5],[6]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan [Member] | Valuation, Income Approach [Member] | Measurement Input, Discount Rate [Member] | Maximum [Member]    
Investment, measurement input [4] 0.215 [3],[7] 0.21 [5],[6]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan [Member] | Valuation, Income Approach [Member] | Measurement Input, Discount Rate [Member] | Weighted Average [Member]    
Investment, measurement input [4] 0.1793 [3],[7] 0.1913 [5],[6]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan [Member] | Valuation, Income Approach [Member] | Measurement Input, Expected Term [Member] | Minimum [Member]    
Investment, measurement input [4] 0.8 [3],[7] 0.8 [5],[6]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan [Member] | Valuation, Income Approach [Member] | Measurement Input, Expected Term [Member] | Maximum [Member]    
Investment, measurement input [4] 24.5 [3],[7] 25 [5],[6]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan [Member] | Hybrid of Collateral Based or Conversion Approach and Income Approach [Member]    
Investments, fair value $ 14,829,525 [8] $ 16,969,011 [9]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan [Member] | Hybrid of Collateral Based or Conversion Approach and Income Approach [Member] | Measurement Input, Collateral Coverage Ratio [Member] | Minimum [Member]    
Investment, measurement input [4] 0.6 [3],[7] 0.74 [5],[9]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan [Member] | Hybrid of Collateral Based or Conversion Approach and Income Approach [Member] | Measurement Input, Collateral Coverage Ratio [Member] | Maximum [Member]    
Investment, measurement input [4] 1.18 [3],[7] 1.18 [5],[9]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan [Member] | Hybrid of Collateral Based or Conversion Approach and Income Approach [Member] | Measurement Input, Discount Rate [Member] | Minimum [Member]    
Investment, measurement input [4] 0.19 [3],[8] 0.19 [5]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan [Member] | Hybrid of Collateral Based or Conversion Approach and Income Approach [Member] | Measurement Input, Discount Rate [Member] | Maximum [Member]    
Investment, measurement input [4] 0.35 [3],[8] 0.35 [5],[9]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan [Member] | Hybrid of Collateral Based or Conversion Approach and Income Approach [Member] | Measurement Input, Discount Rate [Member] | Weighted Average [Member]    
Investment, measurement input [4] 0.2323 [3],[8] 0.2279 [5],[9]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan [Member] | Hybrid of Collateral Based or Conversion Approach and Income Approach [Member] | Measurement Input, Expected Term [Member] | Minimum [Member]    
Investment, measurement input [4] 1 [3],[8] 1 [5],[9]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan [Member] | Hybrid of Collateral Based or Conversion Approach and Income Approach [Member] | Measurement Input, Expected Term [Member] | Maximum [Member]    
Investment, measurement input [4] 6.8 [3],[8] 4 [5],[9]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member]    
Investments, fair value $ 66,297,945 $ 71,371,727
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Collateral Based Approach Valuation Technique [Member]    
Investments, fair value $ 21,573,387 [1] $ 21,129,236 [2]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Collateral Based Approach Valuation Technique [Member] | Measurement Input, Collateral Coverage Ratio [Member] | Minimum [Member]    
Investment, measurement input [4] 0.35 [3],[8] 0.37 [5]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Collateral Based Approach Valuation Technique [Member] | Measurement Input, Collateral Coverage Ratio [Member] | Maximum [Member]    
Investment, measurement input [4] 2.6 [3],[8] 2.73 [5]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Collateral Based Approach Valuation Technique [Member] | Measurement Input, Discount Rate [Member] | Minimum [Member]    
Investment, measurement input [4] 0.135 [1],[3] 0.135 [5]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Collateral Based Approach Valuation Technique [Member] | Measurement Input, Discount Rate [Member] | Maximum [Member]    
Investment, measurement input [4] 0.19 [1],[3] 0.19 [5]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Collateral Based Approach Valuation Technique [Member] | Measurement Input, Discount Rate [Member] | Weighted Average [Member]    
Investment, measurement input [4] 0.1821 [1],[3] 0.1819 [5]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Collateral Based Approach Valuation Technique [Member] | Measurement Input, Expected Term [Member] | Minimum [Member]    
Investment, measurement input [4] 1 [1],[3] 1 [5]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Collateral Based Approach Valuation Technique [Member] | Measurement Input, Expected Term [Member] | Maximum [Member]    
Investment, measurement input [4] 3.5 [1],[3] 3.5 [5]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Valuation, Income Approach [Member]    
Investments, fair value $ 36,425,260 [7] $ 48,465,183 [6]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Valuation, Income Approach [Member] | Measurement Input, Discount Rate [Member] | Minimum [Member]    
Investment, measurement input [4] 0.0503 [3],[7] 0.11 [5],[6]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Valuation, Income Approach [Member] | Measurement Input, Discount Rate [Member] | Maximum [Member]    
Investment, measurement input [4] 0.17 [3],[7] 0.225 [5],[6]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Valuation, Income Approach [Member] | Measurement Input, Discount Rate [Member] | Weighted Average [Member]    
Investment, measurement input [4] 0.114 [3],[7] 0.1448 [5],[6]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Valuation, Income Approach [Member] | Measurement Input, Expected Term [Member] | Minimum [Member]    
Investment, measurement input [4] 0.1 [3],[7] 0.2 [5],[6]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Valuation, Income Approach [Member] | Measurement Input, Expected Term [Member] | Maximum [Member]    
Investment, measurement input [4] 8 [3],[7] 8.5 [5],[6]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Valuation, Income Approach [Member] | Measurement Input, EBITDA Multiple [Member]    
Investment, measurement input [4] 0.07 [3],[7] 0.07 [5],[6]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Hybrid of Collateral Based or Conversion Approach and Income Approach [Member]    
Investments, fair value $ 8,299,298 [8] $ 1,777,308 [9]
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Hybrid of Collateral Based or Conversion Approach and Income Approach [Member] | Minimum [Member]    
Investment, measurement input [4],[5],[9]   2.9
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Hybrid of Collateral Based or Conversion Approach and Income Approach [Member] | Maximum [Member]    
Investment, measurement input [4],[5],[9]   3
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Hybrid of Collateral Based or Conversion Approach and Income Approach [Member] | Measurement Input, Collateral Coverage Ratio [Member]    
Investment, measurement input [4],[5],[9]   0.37
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Hybrid of Collateral Based or Conversion Approach and Income Approach [Member] | Measurement Input, Collateral Coverage Ratio [Member] | Minimum [Member]    
Investment, measurement input [3],[4],[7] 0.36  
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Hybrid of Collateral Based or Conversion Approach and Income Approach [Member] | Measurement Input, Collateral Coverage Ratio [Member] | Maximum [Member]    
Investment, measurement input [3],[4],[7] 4.52  
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Hybrid of Collateral Based or Conversion Approach and Income Approach [Member] | Measurement Input, Discount Rate [Member]    
Investment, measurement input [4],[5],[9]   0.2275
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Hybrid of Collateral Based or Conversion Approach and Income Approach [Member] | Measurement Input, Discount Rate [Member] | Minimum [Member]    
Investment, measurement input [3],[4],[8] 0.225  
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Hybrid of Collateral Based or Conversion Approach and Income Approach [Member] | Measurement Input, Discount Rate [Member] | Maximum [Member]    
Investment, measurement input [3],[4],[8] 0.2275  
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Hybrid of Collateral Based or Conversion Approach and Income Approach [Member] | Measurement Input, Discount Rate [Member] | Weighted Average [Member]    
Investment, measurement input [3],[4],[8] 0.2255  
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Hybrid of Collateral Based or Conversion Approach and Income Approach [Member] | Measurement Input, Expected Term [Member] | Minimum [Member]    
Investment, measurement input [3],[4],[8] 1.5  
Fair Value, Inputs, Level 3 [Member] | Senior Secured Term Loan Participations [Member] | Hybrid of Collateral Based or Conversion Approach and Income Approach [Member] | Measurement Input, Expected Term [Member] | Maximum [Member]    
Investment, measurement input [3],[4],[8] 3.2  
Fair Value, Inputs, Level 3 [Member] | Other Investment Companies [Member]    
Investments, fair value $ 11,816,853 $ 11,451,817
Fair Value, Inputs, Level 3 [Member] | Other Investment Companies [Member] | Collateral Based Approach Valuation Technique [Member]    
Investments, fair value $ 7,872,732 [1] $ 8,637,158 [2]
Fair Value, Inputs, Level 3 [Member] | Other Investment Companies [Member] | Collateral Based Approach Valuation Technique [Member] | Measurement Input, Collateral Coverage Ratio [Member] | Minimum [Member]    
Investment, measurement input [4] 0.53 [3],[8] 0.53 [5]
Fair Value, Inputs, Level 3 [Member] | Other Investment Companies [Member] | Collateral Based Approach Valuation Technique [Member] | Measurement Input, Collateral Coverage Ratio [Member] | Maximum [Member]    
Investment, measurement input [4] 1.02 [3],[8] 1.32 [5]
Fair Value, Inputs, Level 3 [Member] | Other Investment Companies [Member] | Collateral Based Approach Valuation Technique [Member] | Measurement Input, Discount Rate [Member] | Minimum [Member]    
Investment, measurement input [4] 0.20 [1],[3] 0.0518 [2],[5]
Fair Value, Inputs, Level 3 [Member] | Other Investment Companies [Member] | Collateral Based Approach Valuation Technique [Member] | Measurement Input, Discount Rate [Member] | Maximum [Member]    
Investment, measurement input [4] 0.30 [1],[3] 0.30 [2],[5]
Fair Value, Inputs, Level 3 [Member] | Other Investment Companies [Member] | Collateral Based Approach Valuation Technique [Member] | Measurement Input, Discount Rate [Member] | Weighted Average [Member]    
Investment, measurement input [4] 0.2603 [1],[3] 0.2419 [2],[5]
Fair Value, Inputs, Level 3 [Member] | Other Investment Companies [Member] | Collateral Based Approach Valuation Technique [Member] | Measurement Input, Expected Term [Member] | Minimum [Member]    
Investment, measurement input [4] 0.5 [1],[3] 0.5 [2],[5]
Fair Value, Inputs, Level 3 [Member] | Other Investment Companies [Member] | Collateral Based Approach Valuation Technique [Member] | Measurement Input, Expected Term [Member] | Maximum [Member]    
Investment, measurement input [4] 3 [1],[3] 4 [2],[5]
Fair Value, Inputs, Level 3 [Member] | Other Investment Companies [Member] | Valuation, Income Approach [Member]    
Investments, fair value $ 3,944,121 [7] $ 2,814,659 [6]
Fair Value, Inputs, Level 3 [Member] | Other Investment Companies [Member] | Valuation, Income Approach [Member] | Measurement Input, Discount Rate [Member] | Minimum [Member]    
Investment, measurement input [4] 0.0663 [3],[7] 0.08 [5],[6]
Fair Value, Inputs, Level 3 [Member] | Other Investment Companies [Member] | Valuation, Income Approach [Member] | Measurement Input, Discount Rate [Member] | Maximum [Member]    
Investment, measurement input [4] 0.1325 [3],[7] 0.1325 [5],[6]
Fair Value, Inputs, Level 3 [Member] | Other Investment Companies [Member] | Valuation, Income Approach [Member] | Measurement Input, Discount Rate [Member] | Weighted Average [Member]    
Investment, measurement input [4] 0.081 [3],[7] 0.0923 [5],[6]
Fair Value, Inputs, Level 3 [Member] | Other Investment Companies [Member] | Valuation, Income Approach [Member] | Measurement Input, Expected Term [Member] | Minimum [Member]    
Investment, measurement input [4] 0.5 [3],[7] 0.5 [5],[6]
Fair Value, Inputs, Level 3 [Member] | Other Investment Companies [Member] | Valuation, Income Approach [Member] | Measurement Input, Expected Term [Member] | Maximum [Member]    
Investment, measurement input [4] 3.5 [3],[7] 2 [5],[6]
Fair Value, Inputs, Level 3 [Member] | Convertible Debt [Member]    
Investments, fair value $ 30,806,874 $ 29,092,471
Fair Value, Inputs, Level 3 [Member] | Convertible Debt [Member] | Valuation, Income Approach [Member]    
Investment, measurement input [3],[4],[7] 0.5  
Investments, fair value $ 30,806,874 [7] $ 29,092,471 [6]
Fair Value, Inputs, Level 3 [Member] | Convertible Debt [Member] | Valuation, Income Approach [Member] | Measurement Input, Discount Rate [Member] | Minimum [Member]    
Investment, measurement input [4] 0.1575 [3],[7] 0.1575 [5],[6]
Fair Value, Inputs, Level 3 [Member] | Convertible Debt [Member] | Valuation, Income Approach [Member] | Measurement Input, Discount Rate [Member] | Maximum [Member]    
Investment, measurement input [4] 0.17 [3],[7] 0.17 [5],[6]
Fair Value, Inputs, Level 3 [Member] | Convertible Debt [Member] | Valuation, Income Approach [Member] | Measurement Input, Discount Rate [Member] | Weighted Average [Member]    
Investment, measurement input [4] 0.1795 [3],[7] 0.1697 [5],[6]
Fair Value, Inputs, Level 3 [Member] | Warrant [Member]    
Investments, fair value $ 0 $ 0
Fair Value, Inputs, Level 3 [Member] | Warrant [Member] | Valuation Technique, Option Pricing Model [Member]    
Investments, fair value $ 0 $ 0
Fair Value, Inputs, Level 3 [Member] | Warrant [Member] | Valuation Technique, Option Pricing Model [Member] | Measurement Input, Expected Term [Member]    
Investment, measurement input [4] 5 [3] 5 [5]
Fair Value, Inputs, Level 3 [Member] | Warrant [Member] | Valuation Technique, Option Pricing Model [Member] | Measurement Input, Risk Free Interest Rate [Member]    
Investment, measurement input [4] 0.037 [3] 0.037 [5]
Fair Value, Inputs, Level 3 [Member] | Warrant [Member] | Valuation Technique, Option Pricing Model [Member] | Measurement Input, Price Volatility [Member]    
Investment, measurement input [4] 90.6 [3] 90.6 [5]
[1] The Company used a collateral based approach for the following Watch List investments: MICD, Trustco, Sancor, WinRep, IIG TOF B.V., Itelecom, Algodonera, and Frigorifico.
[2] Collateral based approach used for the following Watch List investments: MICD, Trustco, Sancor, WinRep, IIG TOF B.V., Itelecom, Algodonera and Frigorifico.
[3] Represents estimated period from March 31, 2026 to receipt date of final payment for investments under the income approach or estimated period from March 31, 2026 to collection date of proceeds from liquidation of collateral for investments under the liquidation approach.
[4] The inputs were weighted based on the fair value of the investments included in the range.
[5] Represents estimated period from December 31, 2025 to receipt date of final payment for investments under the income approach or estimated period from December 31, 2025 to collection date of proceeds from liquidation of collateral for investments under the liquidation approach.
[6] The Company used the income approach for the following Watch List investments: Grupo Surpapel, Limas, Triton, Dock Brasil, Cevher, Maritime One, Lidas, Agilis Partners, Agilis Partners Holding, CAGSA and Producam.
[7] The Company used the income approach for the following Watch List investments: Grupo Surpapel, Limas, Triton, Dock Brasil, Agilis Partners, Agilis Partners Holding, CAGSA, Producam, Itelecom and Equity Participation in Cocoa Transaction.
[8] The Company used a hybrid of the collateral or the conversion approach and the income approach for the following Watch List investments: PT Citra, Vikudha, Ecsponent and Lidas.
[9] The Company used a hybrid of the collateral and the income approach for the following Watch List investments: PT Citra, Vikudha and Ecsponent.