v3.26.1
Note 4 - Loans and Allowance for Credit Losses - Schedule of Loans Past Due (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss $ 1,106,100 $ 1,064,259
Financing Receivable, Excluding Accrued Interest, Nonaccrual 4,567 6,030
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance 4,567 6,030
Commercial Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 214,185 146,178
Financing Receivable, Excluding Accrued Interest, Nonaccrual 289 139
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance 289 139
Commercial Real Estate Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 688,569 702,455
Financing Receivable, Excluding Accrued Interest, Nonaccrual 894 657
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance 894 657
Agricultural Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 86,474 93,627
Financing Receivable, Excluding Accrued Interest, Nonaccrual 2,758 4,423
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance 2,758 4,423
Residential Mortgage [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 98,448 100,684
Financing Receivable, Excluding Accrued Interest, Nonaccrual 156 174
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance 156 174
Residential Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 4,292 5,837
Financing Receivable, Excluding Accrued Interest, Nonaccrual 0 0
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance 0 0
Consumer Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 14,132 15,478
Financing Receivable, Excluding Accrued Interest, Nonaccrual 470 637
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance 470 637
Financial Asset, 30 to 59 Days Past Due [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,715 1,392
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 210 470
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 354 231
Financial Asset, 30 to 59 Days Past Due [Member] | Agricultural Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2 0
Financial Asset, 30 to 59 Days Past Due [Member] | Residential Mortgage [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,149 691
Financial Asset, 30 to 59 Days Past Due [Member] | Residential Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0
Financial Asset, 60 to 89 Days Past Due [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,236 598
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 996 597
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0
Financial Asset, 60 to 89 Days Past Due [Member] | Agricultural Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 137 1
Financial Asset, 60 to 89 Days Past Due [Member] | Residential Mortgage [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 103 0
Financial Asset, 60 to 89 Days Past Due [Member] | Residential Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Agricultural Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Residential Mortgage [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Residential Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0
Financial Asset, Past Due And Nonaccrual [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 7,518 8,020
Financial Asset, Past Due And Nonaccrual [Member] | Commercial Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,495 1,206
Financial Asset, Past Due And Nonaccrual [Member] | Commercial Real Estate Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,248 888
Financial Asset, Past Due And Nonaccrual [Member] | Agricultural Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 2,897 4,424
Financial Asset, Past Due And Nonaccrual [Member] | Residential Mortgage [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,408 865
Financial Asset, Past Due And Nonaccrual [Member] | Residential Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0
Financial Asset, Past Due And Nonaccrual [Member] | Consumer Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 470 637
Financial Asset, Not Past Due [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 1,098,582 1,056,239
Financial Asset, Not Past Due [Member] | Commercial Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 212,690 144,972
Financial Asset, Not Past Due [Member] | Commercial Real Estate Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 687,321 701,567
Financial Asset, Not Past Due [Member] | Agricultural Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 83,577 89,203
Financial Asset, Not Past Due [Member] | Residential Mortgage [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 97,040 99,819
Financial Asset, Not Past Due [Member] | Residential Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 4,292 5,837
Financial Asset, Not Past Due [Member] | Consumer Portfolio Segment [Member]    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss $ 13,662 $ 14,841