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Interest Rate Swaps - Additional Information (Detail) (USD $)
 0 Months Ended 12 Months Ended
May 03, 2011
Aug. 01, 2008
Dec. 31, 2013
Dec. 31, 2012
Schedule Of Loans And Allowance For Loan By Class Individually And Collectively Evaluated For Impairment [Line Items]        
Term of interest rate swap agreement executed 5 years 5 years    
Interest rate swap inception date May 03, 2011 Aug. 01, 2008    
Value of subordinated note hedged $ 10,000,000 $ 10,000,000    
Interest rate swap effective date Sep. 15, 2013 Sep. 15, 2008    
Interest rate The interest rate swap involves the receipt of variable-rate amounts in exchange for fixed-rate payments from September 15, 2013 to September 15, 2018 without exchange of the underlying notional amount The interest Rate swap involved the receipt of variable-rate amounts in exchange for fixed-rate payments from September 15, 2008 to the September 15, 2013 maturity date without exchange of the underlying notional amount    
Interest rate swap maturity date   Sep. 15, 2013    
Derivatives designated as fair value hedges     0 0
Accumulated other comprehensive loss estimated     378,000  
Collateral amount for counterparty interest rate swap     $ 1,400,000 $ 1,950,000
LIBOR Plus 155 Basis Points [Member]
        
Schedule Of Loans And Allowance For Loan By Class Individually And Collectively Evaluated For Impairment [Line Items]        
Variable rate on the subordinated debt on effective date in case of interest rate swap     LIBOR plus 155 basis points  
Variable interest rate on subordinate debt     1.79%  
4.02% Fixed Rate Plus 155 Basis Points [Member]
        
Schedule Of Loans And Allowance For Loan By Class Individually And Collectively Evaluated For Impairment [Line Items]        
Variable rate on the subordinated debt on effective date in case of interest rate swap     4.02% fixed rate plus 155 basis points  
Interest rate being paid by the corporation     5.57%  
Interest Rate Swaps [Member]
        
Schedule Of Loans And Allowance For Loan By Class Individually And Collectively Evaluated For Impairment [Line Items]        
Derivative basis spread on variable rate     1.55%  
Derivative fixed interest rate rate basis     4.02%