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Note 3 - Loans and Allowance for Loan Losses - Nonaccrual Loan by Loan Category (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Nonaccrual loans $ 1,197 $ 1,727
Agricultural [Member]    
Nonaccrual loans 307 313
Commercial and Industrial [Member]    
Nonaccrual loans 46 285
Consumer Portfolio Segment [Member]    
Nonaccrual loans 7 0
Commercial Real Estate Portfolio Segment [Member]    
Nonaccrual loans 0 279
Residential Portfolio Segment [Member]    
Nonaccrual loans $ 837 $ 850