v2.4.0.6
Loans - Additional Information (Detail) (USD $)
6 Months Ended3 Months Ended6 Months Ended3 Months Ended6 Months Ended
Jun. 30, 2012
Dec. 31, 2011
Dec. 30, 2011
Jun. 30, 2012
Troubled Debt Restructuring
Jun. 30, 2012
Troubled Debt Restructuring
Jun. 30, 2012
Troubled Debt Restructuring That Subsequently Defaults
Jun. 30, 2012
Troubled Debt Restructuring That Subsequently Defaults
Jun. 30, 2012
Loan Modification Reduction of Stated Interest Rate
Jun. 30, 2012
Loan Modification Extension of Maturity Date
Minimum
Jun. 30, 2012
Loan Modification Extension of Maturity Date
Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Specific reserves to customers whose loan terms have been modified in troubled debt restructurings$ 4,374,000 $ 2,074,000       
Post-Modification Outstanding Recorded Investment20,737,406 15,229,000       
Loan term modifications in troubled debt restructurings, time period       3 years8 months12 months
Increased the allowance for loan losses due to troubled debt restructurings73,0001,699,000  681,727411,322    
Charge offs due to troubled debt restructurings   1,112,1471,262,1471,112,1471,262,147   
Period loan should be contractually past due under modified terms to be considered in payment default   30 days30 days     
Loans individually analyzed for credit quality based on credit risk, individual outstanding balance$ 100,000