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Note 3 - Securities (Details Textual) $ in Thousands	Mar. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Debt Securities, Available-for-Sale, Allowance for Credit Loss	$ 0	$ 0
Debt Securities, Available-for-Sale, Number of Securities	924	946
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	808	842
SBIC Funds [Member]
Equity Securities, FV-NI	$ 15,700	$ 14,500
Local and Regional Banks and Other Funds [Member]
Equity Securities, FV-NI	$ 299	$ 277

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Amount of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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