v3.26.1
Note 4 - Loans and the Allowance for Credit Losses - Loan Modifications (Details) - Extended Maturity [Member] - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Modified $ 2,570 $ 7,958
Real estate – commercial% of total segment financing receivables 0.17% 0.78%
Modified $ 2,570 $ 7,958
Real estate – commercial% of total segment financing receivables 0.17% 0.78%
Commercial Portfolio Segment [Member] | Commercial Loans [Member]    
Modified $ 1,682  
Real estate – commercial% of total segment financing receivables 1.03%  
Modified $ 1,682  
Real estate – commercial% of total segment financing receivables 1.03%  
Commercial Portfolio Segment [Member] | Agricultural Loans [Member]    
Modified $ 350 $ 7,186
Real estate – commercial% of total segment financing receivables 0.21% 6.30%
Modified $ 350 $ 7,186
Real estate – commercial% of total segment financing receivables 0.21% 6.30%
Commercial Real Estate Portfolio Segment [Member] | Commercial Loans [Member]    
Modified $ 538 $ 772
Real estate – commercial% of total segment financing receivables 0.33% 0.11%
Modified $ 538 $ 772
Real estate – commercial% of total segment financing receivables 0.33% 0.11%