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Information in Regard to Troubled Debt Restructurings that Occurred During Period (Detail) (Troubled Debt Restructuring, USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Contract
Jun. 30, 2014
Contract
Jun. 30, 2013
Contract
Financing Receivable, Modifications [Line Items]      
Number of Contracts 1 3 1
Pre-Modification Outstanding Balance $ 160 $ 542 $ 160
Post-Modification Outstanding Balance 160 542 160
Commercial Real Estate
     
Financing Receivable, Modifications [Line Items]      
Number of Contracts   3  
Pre-Modification Outstanding Balance   542  
Post-Modification Outstanding Balance   542  
Residential
     
Financing Receivable, Modifications [Line Items]      
Number of Contracts 1   1
Pre-Modification Outstanding Balance 160   160
Post-Modification Outstanding Balance $ 160   $ 160