Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

v2.4.0.8
Document and Entity Information (USD $)
12 Months Ended
Dec. 31, 2013
Mar. 04, 2014
Jun. 30, 2013
Document and Entity Information [Abstract]      
Entity Registrant Name UNION FIRST MARKET BANKSHARES CORP    
Entity Central Index Key 0000883948    
Document Type 10-K    
Document Period End Date Dec. 31, 2013    
Amendment Flag false    
Document Fiscal Year Focus 2013    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --12-31    
Entity Filer Category Accelerated Filer    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer No    
Entity Public Float     $ 494,929,402
Entity Common Stock, Shares Outstanding   46,858,764