Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Securities (Details Textual)

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Note 4 - Securities (Details Textual) - USD ($)
$ in Thousands
Jun. 30, 2024
Dec. 31, 2023
Jun. 30, 2023
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Current $ 0   $ 0
US Treasury Securities and Residential Mortgage-Backed Securities [Member]      
Debt Securities, Held-to-Maturity, Allowance for Credit Loss 0   0
US States and Political Subdivisions Debt Securities [Member]      
Debt Securities, Available-for-Sale, Allowance for Credit Loss 0   $ 0
Asset Not Pledged as Collateral and Asset Pledged as Collateral without Right [Member]      
Debt Securities $ 1,590,000 $ 1,490,000