XML 14 R1.htm IDEA: XBRL DOCUMENT v3.6.0.2
Document And Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2016
Mar. 21, 2017
Jun. 30, 2016
Document And Entity Information [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2016    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2016    
Entity Registrant Name BANK OF THE JAMES FINANCIAL GROUP INC    
Entity Central Index Key 0001275101    
Current Fiscal Year End Date --12-31    
Entity Filer Category Smaller Reporting Company    
Entity Common Stock, Shares Outstanding   4,378,436  
Entity Public Float     $ 48,283,179
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Well-known Seasoned Issuer No