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SECURITIES AVAILABLE FOR SALE - Narrative (Detail) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 USD ($) security | Dec. 31, 2015 USD ($) security | Dec. 31, 2014 USD ($)
Schedule of Available-for-sale Securities [Line Items] |  |  |
Number of securities for which amortized cost exceeds fair value | 46 | 53 |
Proceeds from sales of securities available for sale | $ | $ 64,742 | $ 65,611 | $ 169,573
Gross gains on sales of securities | $ | 1,468 | 1,948 | 2,301
Gross losses sales of securities | $ | 48 | 24 | $ 366
Fair value of securities pledged | $ | $ 317,282 | $ 250,397 |
US Government Agencies and US Government Sponsored Enterprises (GSE) |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Number of securities for which amortized cost exceeds fair value | 17 | 29 |
Number of securities held, less than 12 months category | 14 | 25 |
Number of securities held, 12 months or more category | 3 | 4 |
States and political subdivisions |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Number of securities for which amortized cost exceeds fair value | 26 | 21 |
Number of securities held, less than 12 months category | 25 | 16 |
Number of securities held, 12 months or more category | 1 | 5 |
Private label CMOs |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Number of securities for which amortized cost exceeds fair value | 3 | 3 |
Number of securities held, less than 12 months category | 3 | 3 |

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- Definition This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27357-111563 + Details
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- Definition This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27357-111563 + Details
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- Definition Number of investment positions in available-for-sale investments in a continuous unrealized loss position for less than one year or normal operating cycle, if longer, for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement. + References No definition available. + Details
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- Definition The fair value of available-for-sale securities that serve as collateral for borrowings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5086-111524 + Details
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- Definition The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26853-111562 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585 + Details
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