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Note 12 - Subsequent Events (Details Textual) - USD ($) $ in Thousands	Oct. 30, 2023	Sep. 30, 2023	Dec. 31, 2022
Investment Owned, Fair Value		$ 729,053	$ 720,026
Evelo Biosciences, Inc. [Member]
Investment Owned, Fair Value		$ 8,500
Subsequent Event [Member] | Evelo Biosciences, Inc. [Member]
Investment Owned, Fair Value	$ 1,100

X

- Definition

Fair value of investment in security owned.

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