Shareholders' equity and regulatory matters (Details Textual) - USD ($)
 1 Months Ended 12 Months Ended
May 01, 2009
Feb. 24, 2017
Mar. 27, 2015
Dec. 31, 2016
Dec. 31, 2013
Feb. 15, 2017
Dec. 31, 2015
Gross Proceeds From Rights Offerings     $ 14,589,381        
Forgiven Of Accrued Dividend On Preferred Stock     $ 2,215,009        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights 499,029   1,051,866        
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 4.43   $ 13.87        
Percentage Of Premium Over Closing Price In Hundred         30.00%    
Proceeds from Issuance of Private Placement         $ 1,684,075    
Share Price         $ 24.80    
Dividends Payable       $ 2,815,000      
Cumulative Dividend Rate Per Annum For First Five Years       5.00%      
Cumulative Dividend Rate Per Annum       9.00%      
Fair Value Of Preferred Stock Estimated Using Discounted Cash Flow Methodology 13.00%            
Preferred Stock, Shares Issued 14,738     5,715     5,715
Preferred Stock, Par or Stated Value Per Share $ 4.00     $ 4     $ 4
Preferred Stock, Liquidation Preference Per Share $ 1,000     $ 1,000     $ 1,000
Discounted Cash Flow Methodology Number Of Payments 20            
Fair Value Of Securities Using Pricing Model $ 10,742,000            
Aggregate Fair Value Attributable Percentage 95.00%            
Fair Value Assumptions, Risk Free Interest Rate 2.03%            
Fair Value Assumptions, Expected Dividend Rate 6.162%            
Preference Stock Issued During Period Value New Issues $ 14,738,000            
Fair Value Assumptions, Expected Term 5 years            
Payments to Acquire Businesses, Gross $ 14,738,000            
Capital to Risk Weighted Assets             12.85%
Common Equity Tier One Risk Based Capital to Risk Weighted Assets       31.00%      
Excess Common Equity Tier One Capital to Risk Weighted Assets       2.50%      
Common Equity Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets       7.00%      
Tier One Leverage Capital Required for Capital Adequacy to Average Assets     9.33% 4.00%      
Preferred Stock, Shares Outstanding       5,715     5,715
Subsequent Event [Member]              
Dividends Payable           $ 2,911,000  
Stock Redeemed or Called During Period, Shares   688          
Preferred Stock, Redemption Price Per Share           $ 1,000  
Subsidiaries [Member]              
Capital to Risk Weighted Assets       15.33%     14.02%
Common Equity Tier One Risk Based Capital to Risk Weighted Assets       14.28%      
Common Equity Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets       4.50%     4.50%
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets       4.00%     4.00%
Tier One Leverage Capital Required for Capital Adequacy to Average Assets       4.00%     4.00%
Minimum [Member]              
Excess Tier One Risk Based Capital to Risk Weighted Assets       4.00%      
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets       8.50%      
Minimum Leverage Ratio To Be Maintained As Per Consent Order       8.00%      
Minimum Capital To Risk Weighted Assets Ratio To Be Maintained As Per Consent Order       12.00%      
Maximum [Member]              
Excess Tier One Risk Based Capital to Risk Weighted Assets       6.00%      
Village Financial Statutory Trust II [Member]              
Number Of Securities Issued During Period Upon Exercise Of Basic Subscription Rights     283,293        
Number Of Securities Issued Upon Exercise Of Oversubscription Privileges     191,773        
Percentage Of Number Of Shares Pursuant To Over Subscription     36.90%        
Preferred Stock [Member]              
Fair Value Of Securities Using Pricing Model 10,208,000            
Stock and Warrants Issued During Period, Value, Preferred Stock and Warrants 14,006,000            
Warrant [Member]              
Fair Value Of Securities Using Pricing Model $ 534,000            
Aggregate Fair Value Attributable Percentage 5.00%            
Stock and Warrants Issued During Period, Value, Preferred Stock and Warrants $ 732,000            
Directors And Executive Officers [Member]              
Stock Issued During Period, Shares, New Issues         67,907    
Standby Offering [Member]              
Gross Proceeds From Rights Offerings     $ 4,618,813        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights     576,800        
Conversion of Stock, Shares Issued     333,007        
Conversion of Stock, Shares Converted     9,023        
Stock Issued During Period, Shares, New Issues     243,793