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LOANS - Schedule of Impaired Loans (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2013
Dec. 31, 2012
Sep. 30, 2012
Sep. 30, 2013
Dec. 31, 2012
Sep. 30, 2012
Receivables [Abstract]            
Impaired loans without a valuation allowance $ 253 $ 730 $ 1,145 $ 253 $ 730 $ 1,145
Impaired loans with a valuation allowance 1,308 3,861 3,371 1,308 3,861 3,371
Total impaired loans 1,561 4,591 4,516 1,561 4,591 4,516
Valuation allowance related to impaired loans 423 865 453 423 865 453
Total non-accrual loans 2,908 4,828 5,260 2,908 4,828 5,260
Total loans past-due ninety days or more and still accruing    1      1  
Average investment in impaired loans $ 1,879 $ 4,468 $ 4,548 $ 3,521 $ 3,436 $ 3,091