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Loans - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Financing Receivable, Recorded Investment [Line Items]      
Total $ 357,093 $ 383,594 $ 392,440
Net deferred loan fees 18 89  
Consumer and Other Loans [Member] | Demand Deposit Overdrafts [Member]
     
Financing Receivable, Recorded Investment [Line Items]      
Total $ 279 $ 153