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FAIR VALUE OF INSTRUMENTS - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2013 | Dec. 31, 2012 | Jun. 30, 2012
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |
Interest-bearing deposits maturing date | 90 days |  |
Carrying amounts of dividends payable, number of days | 40 days |  |
Impaired loans categorized as Level 3 | $ 4,521 | $ 4,591 | $ 4,354
Specific allocation for impaired loans | 771 |  | 557
Impairment of mortgage servicing rights |  | 16 |
Asset impairment charges | 0 | 0 |
Level 3 [Member] |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |
Impaired loans categorized as Level 3 | 4,500 | 4,600 |
Fair Value on a Recurring Basis [Member] |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |
Specific allocation for impaired loans | $ 771 | $ 865 |

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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2420-110228 + Details
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