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Consolidated Schedule of Investments (Unaudited) (Details Textual) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024	Nov. 09, 2022
Debt Instrument, Face Amount	$ 756,669	$ 716,078
Investment Owned, Net Assets, Percentage	219.40%	207.60%
Investment, Affiliated Issuer, Controlled [Member]
Investment Owned, Net Assets, Percentage	3.70%	9.50%
Investment, Affiliated Issuer, Controlled [Member] | HIMV LLC [Member] | Co-lender [Member]
Investment Owned, Net Assets, Percentage	30.00%
Horizon Technology Finance Corporation [Member] | Investment, Affiliated Issuer, Controlled [Member] | HIMV LLC [Member]
Investment Owned, Net Assets, Percentage	70.00%
Asset-backed Notes 2022 [Member]
Debt Instrument, Face Amount	$ 34,169	$ 81,078	$ 157,800
Asset-backed Notes 2022 [Member] | Affiliated Entity [Member]
Debt Instrument, Face Amount			$ 100,000

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