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LOANS - Schedule of Impaired Loans (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Receivables [Abstract]            
Impaired loans without a valuation allowance $ 1,703 $ 730 $ 806 $ 1,703 $ 806 $ 730
Impaired loans with a valuation allowance 2,818 3,861 3,548 2,818 3,548 3,861
Total impaired loans 4,521 4,591 4,354 4,521 4,354 4,591
Valuation allowance related to impaired loans 771 865 557 771 557 865
Total non-accrual loans 4,609 4,828 4,893 4,609 4,893 4,828
Total loans past-due ninety days or more and still accruing    1          1
Investment in impaired loans $ 4,363 $ 4,468 $ 2,772 $ 4,342 $ 2,363 $ 4,508