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Fair Values of Company's Derivatives (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Jun. 30, 2013
Derivative [Line Items]      
Derivative Assets $ 31 $ 84 $ 17
Derivative Liabilities 231 41 163
Derivatives Not Designated As Hedges
     
Derivative [Line Items]      
Derivative Assets 31 41 17
Derivative Liabilities 31 41 163
Interest Rate Swaps Agreement | Designated as Hedging Instrument
     
Derivative [Line Items]      
Derivative Assets   43  
Derivative Liabilities 200    
IRLCs | Derivatives Not Designated As Hedges
     
Derivative [Line Items]      
Derivative Assets     17
Derivative Liabilities 31 41 163
Forward Sale Loan Commitments | Derivatives Not Designated As Hedges
     
Derivative [Line Items]      
Derivative Assets $ 31 $ 41