v3.26.1
Note 2 - Summary of Significant Accounting Policies (Details Textual)
12 Months Ended
Aug. 01, 2016
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss   $ 4,000  
Impairment of Federal Home Loan Bank Stock   0 $ 0
Financing Receivable, Accrued Interest, after Allowance for Credit Loss   $ 3,800,000 $ 4,000,000
Financing Receivable, Number of Portfolios   8  
Number of Properties, Other Real Estate   1 0
Other Real Estate   $ 360,000 $ 0
Amortization of Mortgage Servicing Rights (MSRs)   95,000 69,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued   0  
Mortgage Servicing Rights [Member]      
Servicing Asset   $ 619,000 $ 404,000
Signature Insurance Services, LLC [Member]      
Payments to Acquire Businesses, Gross $ 1,000,000    
Goodwill, Acquired During Period 515,000    
Signature Insurance Services, LLC [Member] | Other Intangible Assets [Member]      
Finite-lived Intangible Assets Acquired $ 485,000    
Finite-Lived Intangible Asset, Useful Life (Year) 10 years    
Minimum [Member]      
Property, Plant and Equipment, Useful Life (Year)   3 years  
Maximum [Member]      
Property, Plant and Equipment, Useful Life (Year)   39 years  
Credit Concentration Risk [Member] | Loans Sold [Member]      
Number of Investors   1  
Percentage of Loans Sold From Mortgage Loans Held for Sale   25.00%  
Percentage Gains on Loans Sold From Mortgage Loans Held for Sale   25.00%