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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
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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

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- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 + Details
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