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FAIR VALUE OF INSTRUMENTS - Impaired Loans and Other Real Estate (Detail) (Fair Value on Nonrecurring Basis [Member], USD $)
In Thousands, unless otherwise specified
 6 Months Ended 12 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]    
Change in fair value of assets and liabilities $ (83) $ (352)
Impaired loans [Member]
    
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]    
Assets measured at fair value on a nonrecurring basis, total 4,521 4,591
Change in fair value of assets and liabilities (3) (76)
Other real estate owned residential mortgages [Member]
    
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]    
Assets measured at fair value on a nonrecurring basis, total 609 783
Change in fair value of assets and liabilities (16) (62)
Other real estate owned commercial [Member]
    
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]    
Assets measured at fair value on a nonrecurring basis, total 1,145 1,526
Change in fair value of assets and liabilities (64) (214)
Level 1 [Member] | Impaired loans [Member]
    
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]    
Assets measured at fair value on a nonrecurring basis, total      
Level 1 [Member] | Other real estate owned residential mortgages [Member]
    
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]    
Assets measured at fair value on a nonrecurring basis, total      
Level 1 [Member] | Other real estate owned commercial [Member]
    
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]    
Assets measured at fair value on a nonrecurring basis, total      
Level 2 [Member] | Impaired loans [Member]
    
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]    
Assets measured at fair value on a nonrecurring basis, total      
Level 2 [Member] | Other real estate owned residential mortgages [Member]
    
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]    
Assets measured at fair value on a nonrecurring basis, total      
Level 2 [Member] | Other real estate owned commercial [Member]
    
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]    
Assets measured at fair value on a nonrecurring basis, total      
Level 3 [Member] | Impaired loans [Member]
    
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]    
Assets measured at fair value on a nonrecurring basis, total 4,521 4,591
Level 3 [Member] | Other real estate owned residential mortgages [Member]
    
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]    
Assets measured at fair value on a nonrecurring basis, total 609 783
Level 3 [Member] | Other real estate owned commercial [Member]
    
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]    
Assets measured at fair value on a nonrecurring basis, total $ 1,145 $ 1,526