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Loans - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Jun. 30, 2013
Financing Receivable, Recorded Investment [Line Items]      
Net deferred loan fees $ 79 $ 18  
Total loans 367,490 357,093 377,513
Consumer and Other Loans [Member]
     
Financing Receivable, Recorded Investment [Line Items]      
Total loans 12,372 12,301 8,045
Consumer and Other Loans [Member] | Demand Deposit Overdrafts [Member]
     
Financing Receivable, Recorded Investment [Line Items]      
Total loans $ 229 $ 279