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Note 3 - Investment Securities (Details Textual) $ in Thousands	3 Months Ended
	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Assets [Abstract]
Other Assets	$ 39,109	$ 30,643
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss	$ 1,230	$ 1,070
Debt Securities Available For Sale Total Number Of Positions	167	207
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	161	176
Debt Securities, Available-for-Sale, Term (Year)	3 years 3 months 18 days
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Period Increase (Decrease)	$ 0
Debt Securities, Available-for-Sale	$ 262,622	$ 276,601
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Other Assets	Other Assets
Deposits [Member] | Asset Pledged as Collateral [Member]
Debt Securities, Available-for-Sale	$ 148,700	$ 124,400

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