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Trust preferred securities (Details Textual) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Debt Instrument [Line Items]    
Trust preferred capital notes $ 8,764,000 $ 8,764,000
Deferred interest payments on the junior subordinated debt securities $ 1,346,000 $ 1,167,000
Percentage of Tier one risk based capital required for capital adequacy (in hundredths) 25.00%  
Southern Community Financial Capital Trust I [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Issuance Date Feb. 24, 2005  
Trust preferred capital notes $ 5,200,000  
Debt Instrument, description of variable rate basis three-month LIBOR plus 2.15%  
Interest rate (in hundredths) 2.69% 2.40%
Maturity date Mar. 15, 2035  
Principal assets of the trust $ 5,200,000  
Village Financial Statutory Trust II [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Issuance Date Sep. 20, 2007  
Trust preferred capital notes $ 3,600,000  
Debt Instrument, description of variable rate basis three-month LIBOR plus 1.4%  
Interest rate (in hundredths) 1.94%  
Maturity date Dec. 31, 2037  
Principal assets of the trust $ 3,600,000  
Trust Preferred Securities [Member]    
Debt Instrument [Line Items]    
Deferred interest payments on the junior subordinated debt securities $ 1,273,000