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Note 1 - Basis of Presentation (Details Textual) - USD ($)		6 Months Ended
	Jan. 01, 2023	Jun. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Dec. 01, 2022
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss		$ 0
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss		1,700,000	$ 1,700,000
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)		$ (102,000)
Commercial Portfolio Segment [Member] | Minimum [Member]
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process				$ 250,000	$ 150,000
Accounting Standards Update 2016-13 [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	$ 622,000
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss	$ 5,400,000
LBSI Insurance, LLC [Member]
Business Acquisition, Percentage of Voting Interests Acquired						100.00%

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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