Summary of Significant Accounting Policies - Components of Other Comprehensive Income and Related Tax Effects (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Accounting Policies [Abstract]    
Unrealized gains (losses) on securities available for sale (net of tax of $280 and $326) $ (544) $ 632
Unrealized pension cost (net of related taxes of $5 and $0) 9   
Total accumulated other comprehensive income $ (535) $ 632