Annual report pursuant to Section 13 and 15(d)

Note 1 - Summary of Significant Accounting Policies (Details Textual)

v3.24.0.1
Note 1 - Summary of Significant Accounting Policies (Details Textual)
12 Months Ended
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Jan. 01, 2023
USD ($)
Dec. 31, 2021
USD ($)
Number Of Full Service Branch Offices 26      
Financing Receivable, Allowance for Credit Loss $ 17,442,000 $ 15,285,000   $ 15,889,000
Retained Earnings (Accumulated Deficit) 89,760,000 59,036,000    
Deferred Income Tax Assets, Net 7,202,000 9,712,000    
Restricted Cash and Cash Equivalents 0 0    
Interest Receivable 8,976,000 7,606,000    
Increase (Decrease) in Loan, Held-for-Sale 0 4,000,000    
Tangible Asset Impairment Charges $ 0      
Stock Dividends Threshold 20.00%      
Stock Dividend Threshold or Less 20.00%      
Number of Operating Segments 1      
Interest Rate Swap [Member]        
Derivative, Number of Instruments Held 2      
Derivative Asset, Notional Amount $ 108,200,000 125,300,000    
Derivative Asset, Subject to Master Netting Arrangement, before Offset 4,900,000 6,500,000    
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset 4,900,000 6,500,000    
Loans and Finance Receivables [Member]        
Interest Receivable 5,300,000 4,000,000    
Maximum [Member]        
Peer Group Assets $ 3,000,000,000      
Maximum [Member] | Building and Building Improvements [Member]        
Property, Plant and Equipment, Useful Life (Year) 40 years      
Maximum [Member] | Office Equipment [Member]        
Property, Plant and Equipment, Useful Life (Year) 15 years      
Minimum [Member]        
Peer Group Assets $ 1,000,000,000      
Minimum [Member] | Building and Building Improvements [Member]        
Property, Plant and Equipment, Useful Life (Year) 5 years      
Minimum [Member] | Office Equipment [Member]        
Property, Plant and Equipment, Useful Life (Year) 3 years      
Mortgages [Member]        
Period After Which Interest Income on Delinquent Loans is Discontinued (Year) 90 years      
Debt Securities [Member]        
Interest Receivable $ 3,400,000 3,400,000    
Interest Rate Lock Commitments [Member]        
Credit Risk Derivatives, at Fair Value, Net 1,000,000 0    
Collateralized Mortgage-Backed Securities [Member]        
Credit Risk Derivatives, at Fair Value, Net 17,000,000 0    
Commercial Real Estate Portfolio Segment [Member]        
Financing Receivable, Allowance for Credit Loss 7,164,000 7,180,000   8,051,000
Commercial Portfolio Segment [Member]        
Financing Receivable, Allowance for Credit Loss 6,871,000 5,596,000   5,176,000
Consumer Portfolio Segment [Member]        
Financing Receivable, Allowance for Credit Loss $ 3,375,000 2,458,000   $ 2,633,000
Consumer Portfolio Segment [Member] | Maximum [Member]        
Financing Receivable, Threshold Period Past Due, Writeoff (Year) 120 years      
Credit Concentration Risk [Member] | Loans Receivable [Member] | Commercial Real Estate Portfolio Segment [Member]        
Concentration Risk, Percentage 44.00%      
Credit Concentration Risk [Member] | Loans Receivable [Member] | Commercial Portfolio Segment [Member]        
Concentration Risk, Percentage 38.00%      
Credit Concentration Risk [Member] | Loans Receivable [Member] | Residential Real Estate And Consumer Loans [Member]        
Concentration Risk, Percentage 18.00%      
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]        
Financing Receivable, Allowance for Credit Loss   1,476,000 $ 1,500,000  
Off-Balance-Sheet, Credit Loss, Liability     62,000  
Retained Earnings (Accumulated Deficit)     1,200,000  
Deferred Income Tax Assets, Net     $ 323,000  
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Commercial Real Estate Portfolio Segment [Member]        
Financing Receivable, Allowance for Credit Loss   (212,000)    
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Commercial Portfolio Segment [Member]        
Financing Receivable, Allowance for Credit Loss   1,299,000    
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Consumer Portfolio Segment [Member]        
Financing Receivable, Allowance for Credit Loss   $ 389,000