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Credit Quality and Allowance for Loan Losses (Details Textual) (USD $)
0 Months Ended 3 Months Ended
Jul. 15, 2011
Mar. 12, 2010
Jun. 30, 2012
Dec. 31, 2011
Credit Quality and Allowance for Loan Losses (Textual) [Abstract]        
Date of acquisition Jul. 15, 2011 Mar. 12, 2010    
Credit Quality and Allowance for Loan Losses (Additional Textual) [Abstract]        
Percentage acquired by FDIC in first amount losses covered assets   80.00%    
Amount acquired by FDIC initially   $ 41,000,000    
Percentage acquired by FDIC in first amount exceeding losses covered assets   95.00%    
Fair value of absorbed receivables 6,200,000      
Bank Loans     0 0
Noncovered loans past due     90 days  
Loans from GSFC     8,800,000 7,200,000
TDRs three loans totaling     $ 2,300,000