Note 2 - Securities (Details Textual) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Sep. 01, 2022 USD ($)
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss	$ 756
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss	$ 548
Weighted Average Re-pricing Term (Year)	6 years 2 months 12 days	5 years 10 months 24 days
Available For Sale Securities Transferred to Held For Sale			24
Debt Securities, Available-for-Sale, Amortized Cost	$ 169,854	$ 173,458	$ 82,200
Debt Securities, Available-for-Sale	147,675	152,857	74,400
Debt Securities, Available-for-Sale, Unrealized Loss			$ 7,800
OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI for Amortization of Gain (Loss), before Tax	367
Other Assets [Member]
Equity Securities without Readily Determinable Fair Value, Amount	$ 642	642
US Treasury Securities [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	3
Available-for-Sale Securities, Number of Securities	3
Debt Securities, Available-for-Sale, Amortized Cost	$ 12,478	12,476
Debt Securities, Available-for-Sale	$ 11,399	11,450
Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	94
Available-for-Sale Securities, Number of Securities	109
US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	94
Available-for-Sale Securities, Number of Securities	108
Debt Securities, Available-for-Sale, Amortized Cost	$ 63,461	64,045
Debt Securities, Available-for-Sale	$ 55,308	$ 56,607

Amount of available-for-sale securities transferred to held-for-sale.

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Amount of unrealized 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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Amortized cost of 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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Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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