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Consolidated Schedule of Investments (Details Textual) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Nov. 09, 2022 | Aug. 13, 2019
--- | --- | --- | --- | ---
Debt Instrument, Face Amount | $ 615,000 | $ 582,573 |  |
Percentage of Nonqualifying Assets on a Cost Basis | 4.70% | 6.50% |  |
Percentage of Nonqualifying Assets on a Fair Value Basis | 2.70% | 6.60% |  |
Investment, Unaffiliated Issuer [Member] | Software Sector [Member] | DropOff, Inc. [Member] |  |  |  |
Investment, Interest Rate, Paid in Kind | 4.50% |  |  |
Asset-backed Notes 2022 [Member] |  |  |  |
Debt Instrument, Face Amount | $ 100,000 | $ 100,000 | $ 157,800 |
Asset-backed Notes 2022 [Member] | Affiliated Entity [Member] |  |  |  |
Debt Instrument, Face Amount |  |  | $ 100,000 |
Asset-backed Notes 2019 [Member] |  |  |  |
Debt Instrument, Face Amount | $ 0 | $ 42,573 |  | $ 160,000
Asset-backed Notes 2019 [Member] | Affiliated Entity [Member] |  |  |  |
Debt Instrument, Face Amount |  |  |  | $ 100,000

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