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Other Real Estate Owned (OREO) - Summary of Changes in the Valuation Allowance (Detail) (USD $)
In Thousands, unless otherwise specified
 6 Months Ended 12 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Dec. 31, 2013
Real Estate [Abstract]      
Balance at beginning of year $ 1,665 $ 2,174 $ 2,174
Provision for losses 86 448 1,055
Transfer in   62  
Charge-offs, net (163) (601) (1,564)
Balance at end of period $ 1,588 $ 2,083 $ 1,665