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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) | 9 Months Ended |
--- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024
Line of Credit Facility [Line Items] |  |
Investment aggregate capitalization | 5.00% |
Investments aggregating capitalization valuations of Percentage | 5.00% |
Minimum aggregate percentage of assets required for applicability of foregoing investment policies | 5.00% |
Cash and cash equivalents | $ 60,994,300 | $ 91,589,702
Restricted cash | $ 0 | $ 0
Percentage of foreign currency denominated investments | 0.004 | 0.004
Non-expiring capital loss carryforwards |  | $ 636,962,720
Unamortized issuance costs | $ (5,868,338) | (7,974,601)
Interest Rate Swap |  |
Line of Credit Facility [Line Items] |  |
Notional amount of interest rate swap | $ 35,000,000 |
Fixed interest rate | 2.633% |
JPMorgan U.S. Government Money Market Fund |  |
Line of Credit Facility [Line Items] |  |
Cash and cash equivalents | $ 6,900,000 | $ 1,400,000
Percentage of cash and cash equivalents net assets held | 0.90% | 0.20%
Yield percentage of cash equivalents | 4.04% | 4.42%
Allspring Government Money Market Fund |  |
Line of Credit Facility [Line Items] |  |
Cash and cash equivalents | $ 50,100,000 | $ 59,200,000
Percentage of cash and cash equivalents net assets held | 6.80% | 7.50%
Yield percentage of cash equivalents | 4.01% | 4.36%

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