v3.25.4
Note 1 - Organization, Basis of Presentation and Impact of Recently Issued Accounting Pronouncements (Details Textual)
 12 Months Ended
Dec. 31, 2024
USD ($)
$ / shares
shares
Dec. 31, 2023
USD ($)
$ / shares
shares
Dec. 31, 2022
USD ($)
shares
Jan. 01, 2023
USD ($)
Oct. 12, 2021
$ / shares
shares
Sep. 15, 2020
$ / shares
Common Stock, Shares Authorized (in shares) | shares 15,000,000 15,000,000     15,000,000  
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares $ 4 $ 4     $ 4  
Preferred Stock, Shares Authorized (in shares) | shares 2,000,000 2,000,000     2,000,000  
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares $ 1 $ 1     $ 1 $ 1
Preferred Stock, Shares Outstanding, Ending Balance (in shares) | shares 28,750 28,750        
Depositary Shares, Fractional Interest in Preferred Stock, Denominator 40          
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss $ 16,078,000 $ 17,275,000        
Federal Reserve Bank Stock Percentage 6.00%          
Federal Home Loan Bank Requires Bank To Maintain Percentage Of Stock Equal To Outstanding Borrowings 4.50%          
Federal Home Loan Bank Stock Minimum Percentage Of Bank Assets 0.20%          
Non-Marketable Equity Securities $ 6,700,000 6,400,000        
Retained Earnings (Accumulated Deficit) 91,150,000 106,549,000        
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued $ 0 $ 0        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | shares 0 0        
Weighted Average Number of Shares Outstanding, Basic (in shares) | shares 7,606,391 7,522,913 7,529,382      
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number (in shares) | shares 0 0 0      
Computer Software and Related Prepaid Assets [Member]            
Impairment of Intangible Assets, Finite-Lived $ 19,721,000 $ 0 $ 0      
Computer Software, Intangible Asset [Member]            
Impairment of Intangible Assets, Finite-Lived 19,090,000 (0)        
Prepaid Assets Related to Computer Software [Member]            
Impairment of Intangible Assets, Finite-Lived $ 631,000          
Minimum [Member]            
Property, Plant and Equipment, Useful Life (Year) 3 years          
Maximum [Member]            
Property, Plant and Equipment, Useful Life (Year) 39 years          
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]            
Retained Earnings (Accumulated Deficit)       $ (1,700,000)    
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Period Increase (Decrease)   2,200,000        
Deferred Tax Assets, Net of Valuation Allowance   506,000        
Low Income Housing Tax Credits [Member]            
Amortization Method Qualified New Market Tax Credit Investments $ 7,600,000 8,200,000        
New Market Tax Credits [Member]            
Amortization Method Qualified New Market Tax Credit Investments 9,400,000 3,100,000        
Federal Reserve Bank [Member]            
Equity Securities, FV-NI, Restricted 5,300,000 5,200,000        
Federal Home Loan Bank of Atlanta [Member]            
Equity Securities, FV-NI, Restricted 1,400,000 1,300,000        
Community Bankers Bank Stock [Member]            
Equity Securities, FV-NI, Restricted $ 126,800,000,000 $ 126,800        
Series A Fixed-rate Non-cumulative Perpetual Preferred Stock [Member]            
Preferred Stock, Dividend Rate, Percentage 7.50%