Quarterly report [Sections 13 or 15(d)]

Financial Highlights - Schedule of Financial Highlights (Details)

v3.26.1
Financial Highlights - Schedule of Financial Highlights (Details) - USD ($)
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Investment Company, Financial Highlights [Line Items]      
Net asset value, beginning of period [1] $ 17.57 $ 25.31  
Income from operations:      
Net investment income [1] 0.19 0.41  
(Decrease) increase in net assets from operations [1] (0.12) 0.28  
Payment of cash dividend [1] (0.29) (0.29)  
Effect of stock dividend [1] 0 (3.31)  
(Decrease) increase in net assets per share [1] (0.41) (3.32)  
Net asset value, end of period [1] 17.16 21.99  
Per share market price, end of period [1] $ 11.75 $ 18.77  
Total return based on market value [2] 5.99% (0.99%)  
Total return based on net asset value [3] (0.70%) (11.97%)  
Supplemental data:      
Ratio of expenses before income taxes to average net assets [4] 4.98% 4.84%  
Ratio of expenses including income taxes to average net assets [4] 5.39% 4.84%  
Ratio of net investment income to average net assets [4] 4.23% 7.46%  
Portfolio turnover 2.70% 0.56%  
Debt/equity ratio 0.98% 0.00%  
Net assets, end of period $ 50,954,855 $ 65,311,253  
Total amount of senior securities outstanding, exclusive of treasury securities $ 500,000 $ 0 $ 0
Asset coverage per unit [5] 10291.00%    
Net Realized (Loss) Gain on Sales and Dispositions of Investments      
Income from operations:      
Net realized (loss) gain on sales and dispositions and Net change in unrealized appreciation/depreciation on investments [1] $ 0.36 $ 0.31  
Net Change in Unrealized Appreciation/Depreciation on Investments      
Income from operations:      
Net realized (loss) gain on sales and dispositions and Net change in unrealized appreciation/depreciation on investments [1] $ (0.67) $ (0.44)  
[1] Per share data is based on shares outstanding and the results are rounded to the nearest cent.
[2] Total return based on market value is calculated as the change in market value per share during the period plus declared dividends per share, assuming reinvestment of dividends, divided by the beginning market value per share.
[3] Total return based on net asset value is calculated as the change in net asset value per share during the period plus declared dividends per share, divided by the beginning net asset value per share.
[4] Percentage is presented on an annualized basis.
[5] Asset coverage per unit is the ratio of the carrying value of the Corporation’s total consolidated assets, less liabilities and indebtedness not represented by senior securities, to the aggregate amount of senior securities representing indebtedness.