v3.26.1
Note 5 - Loans and the Allowance for Credit Losses - Collateral Dependent Loans (Details) - USD ($)
Dec. 31, 2025
Dec. 31, 2024
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process $ 1,512,056,000 $ 1,015,424,000
Equipment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 111,000 245,000
Crops [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 4,873,000 535,000
Livestock [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 225,000  
Farmland [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 2,749,000  
Commercial 1st Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 3,640,000 739,000
S F R 1st Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 862,000 53,000
S F R 2nd Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 510,000 825,000
Land [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 37,000  
Collateral Pledged [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 13,007,000 2,447,000
SFR 3rd Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process   50,000
Commercial Portfolio Segment [Member] | Commercial Loans [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 167,851,000 77,444,000
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Equipment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 111,000 245,000
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Crops [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0 0
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Livestock [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0  
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Farmland [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0  
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Commercial 1st Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0 0
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | S F R 1st Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 161,000 0
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | S F R 2nd Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0 0
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Land [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0  
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Collateral Pledged [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 272,000 245,000
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | SFR 3rd Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process   0
Commercial Portfolio Segment [Member] | Agricultural Loans [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 157,526,000 118,866,000
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Equipment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0 0
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Crops [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 4,873,000 535,000
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Livestock [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 225,000  
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Farmland [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 2,749,000  
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Commercial 1st Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 2,241,000 0
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | S F R 1st Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 311,000 0
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | S F R 2nd Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0 0
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Land [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0  
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Collateral Pledged [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 10,399,000 535,000
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | SFR 3rd Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process   0
Commercial Portfolio Segment [Member] | Real Estate Loan [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 1,002,627,000 646,378,000
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Equipment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0 0
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Crops [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0 0
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Livestock [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0  
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Farmland [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0  
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Commercial 1st Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 1,399,000 739,000
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | S F R 1st Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 245,000 53,000
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | S F R 2nd Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 112,000 652,000
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Land [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 37,000  
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Collateral Pledged [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 1,793,000 1,494,000
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | SFR 3rd Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process   50,000
Commercial Portfolio Segment [Member] | Construction Loans [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 40,168,000 53,503,000
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Equipment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process   0
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Crops [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process   0
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Commercial 1st Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process   0
Commercial Portfolio Segment [Member] | Construction Loans [Member] | S F R 1st Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process   0
Commercial Portfolio Segment [Member] | Construction Loans [Member] | S F R 2nd Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process   0
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Collateral Pledged [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process   0
Commercial Portfolio Segment [Member] | Construction Loans [Member] | SFR 3rd Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process   0
Residential Portfolio Segment [Member] | Real Estate Loan [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 33,116,000 11,539,000
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Equipment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0 0
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Crops [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0 0
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Livestock [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0  
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Farmland [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0  
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Commercial 1st Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0 0
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | S F R 1st Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 145,000 0
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | S F R 2nd Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0 0
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Land [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0  
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Collateral Pledged [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 145,000 0
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | SFR 3rd Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process   0
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 53,647,000 37,888,000
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] | Equipment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0 0
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] | Crops [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0 0
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] | Livestock [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0  
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] | Farmland [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0  
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] | Commercial 1st Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0 0
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] | S F R 1st Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0 0
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] | S F R 2nd Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 398,000 173,000
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] | Land [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process 0  
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] | Collateral Pledged [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process $ 398,000 173,000
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] | SFR 3rd Deed [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process   $ 0