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Loans (Details Textual) (USD $)
1 Months Ended 12 Months Ended
Jan. 31, 2010
Dec. 31, 2012
Dec. 31, 2011
Loans (Additional Textual) [Abstract]      
Loans held for sale   $ 2,500,000 $ 987,000
Residential mortgage loan   26,800,000 67,400,000
Percentage of delinquent loan 2.85% 0.96%  
Delinquent loans least percentage     0.67%
Impaired loans classified as troubled debt restructured   $ 627,300 $ 207,000
Maximum time for re-evaluation (in months)   12 months  
Re-evaluation period for real estate   2 years  
Unsecured consumer loans, credit card credits and overdraft lines of credit reach   90 days  
Delinquent period for charging down consumer loans   120 days  
Delinquent period for charging down commercial and agricultural credits   120 days  
Minimum [Member]
     
Loans (Textual) [Abstract]      
Repayment period of loan with a reasonable reduction of principal balance   2 years  
Maximum [Member]
     
Loans (Textual) [Abstract]      
Leverage position of balance sheet   1.50  
Leverage position of customers   2.00