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Note 6 - Marketable Equity Securities (Details Textual) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Proceeds from Sale of Equity Securities, FV-NI		$ 1,919	$ 0
Harvard Apparatus Regenerative Technology, Inc. (“HART”) [Member]
Investment Owned, Fair Value				$ 3,500
Proceeds from Sale of Equity Securities, FV-NI		1,900
Equity Securities, FV-NI, Realized Loss		1,600
Equity Securities, FV-NI, Unrealized Loss	$ 1,200	$ 400

X

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Amount of realized loss from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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