v3.26.1
Summary Of Significant Accounting Policies (Narrative) (Details)
 12 Months Ended
Dec. 31, 2025
USD ($)
segment
shares
Dec. 31, 2024
USD ($)
shares
Summary Of Significant Accounting Policies [Line Items]    
Maximum maturing period for cash and cash equivalents 90 days  
Duration of loans interest stops accruing 90 days  
Duration of consecutive payments before future payments assured 6 months  
Total loans held for investment, net $ 661,357,000 $ 636,552,000
Unrecognized tax liabilities $ 0 $ 0
Number of reportable segments | segment 3  
Options excluded from calculating diluted EPS because their effect was anti-dilutive | shares 0 0
Advertising expense $ 867,000 $ 768,000
Retained earnings 50,009,000 42,804,000
Allowance for credit losses on held-to-maturity securities 0 0
Allowance for credit losses on available for sale securities 0 0
Interest receivable 3,380,000 3,065,000
Intangible asset, net of amortization $ 6,164,000 6,725,000
Consumer Loan [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Duration of loans charged-off 120 days  
Consumer Revolving Credit Loan [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Duration of loans charged-off 180 days  
Commercial And Commercial Real Estate Loans [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Duration of loans charged-off 180 days  
Available-for-sale Debt securities [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Interest receivable $ 1,405,000 1,150,000
Loans [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Interest receivable 1,953,000 1,912,000
Securities Held to Maturity [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Interest receivable $ 1,427,000 $ 1,154,000
Equipment [Member] | Maximum [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Estimated useful life 7 years  
Equipment [Member] | Minimum [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Estimated useful life 3 years  
Building and Improvements [Member] | Maximum [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Estimated useful life 39 years 6 months  
Building and Improvements [Member] | Minimum [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Estimated useful life 10 years  
2018 Bank Of The James Financial Group, Inc. Equity Incentive Plan [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Number of options granted | shares 0 0
Options exercised | shares 0 0
Outstanding options | shares 0 0
Pettyjohn, Wood & White, Inc [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Amortizable period of intangible assets 15 years  
Annual amortization of intangible asset $ 560,000  
Assets acquisition consideration transferred in amortizable intangible assets 8,406,000  
Intangible asset, net of amortization 6,164,000  
Commercial Agricultural Loans [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Total loans held for investment, net $ 4,389,000 $ 4,172,000