Foreclosed Real Estate - Analysis of the Allowance for Losses on Foreclosed Real Estate (Detail) (Foreclosed Real Estate [Member], USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Foreclosed Real Estate [Member]
     
Valuation Allowance For Losses On Foreclosed Assets Line Items      
Balance at beginning of year $ 515 $ 638 $ 413
Provision for losses 413 418 241
Charge-offs (53) (541) (16)
Balance at end of year $ 875 $ 515 $ 638