v3.25.2
Note 4 - Loans (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Financing Receivable, Accrued Interest, after Allowance for Credit Loss $ 3,516,000   $ 3,516,000   $ 3,268,000
Financing Receivable, Percentage of Outstanding Principal Balance Secured by Owner Occupied Properties 23.00%   23.00%   24.00%
Underwriting Standards, Loan to Value Percentage 80.00%   80.00%    
Underwriting Standards, Housing Percentage 36.00%   36.00%    
Underwriting Standards, Total Debt Ratio 42.00%   42.00%    
Financing Receivable, Nonaccrual $ 0   $ 0   $ 0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 1,109,856,000   1,109,856,000   1,106,535,000
Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount $ 0 $ 0 $ 0 $ 0  
Financing Receivable, Minimum Cash Collateral Percent 110.00%   110.00%    
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged $ 1,109,856,000   $ 1,109,856,000   1,106,535,000
Better Than Acceptable [Member] | Minimum [Member]          
Financing Receivable, Loan-to-value on Real Estate Secured Transactions 10.00%   10.00%    
Better Than Acceptable [Member] | Maximum [Member]          
Financing Receivable, Loan-to-value on Real Estate Secured Transactions 20.00%   20.00%    
Unlikely to be Collected Financing Receivable [Member]          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process $ 0   $ 0   0
Collateral Pledged [Member]          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process $ 0   $ 0   0
Commercial Real Estate Portfolio Segment [Member]          
Financing Receivable, before Allowance for Credit Loss, to Total, Percent 86.00%   86.00%    
Commercial Portfolio Segment [Member]          
Financing Receivable, before Allowance for Credit Loss, to Total, Percent 7.00%   7.00%    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process $ 79,422,000   $ 79,422,000   83,572,000
Residential Real Estate and Other Consumer Loans [Member]          
Financing Receivable, before Allowance for Credit Loss, to Total, Percent 3.00%   3.00%    
Agriculture [Member]          
Financing Receivable, before Allowance for Credit Loss, to Total, Percent 4.00%   4.00%    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process $ 39,875,000   $ 39,875,000   $ 29,336,000