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FAIR VALUE DISCLOSURES - Summary of Additional Qualitative Information (Detail) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2016 | Dec. 31, 2015
Impaired loans | Appraisal of collateral |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Valuation Techniques | Appraisal of collateral | Appraisal of collateral
Foreclosed real estate | Appraisal of collateral |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Valuation Techniques | Appraisal of collateral | Appraisal of collateral
Mortgage servicing rights | Discounted cash flows |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Valuation Techniques | Discounted cash flows |
Fair Value, Measurements, Nonrecurring | Impaired loans | Appraisal of collateral |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Fair Value Estimate | $ 9,841 | $ 4,757
Fair Value, Measurements, Nonrecurring | Impaired loans | Minimum |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Discount rate range (percentage) | 0.00% | 6.00%
Fair Value, Measurements, Nonrecurring | Impaired loans | Minimum | Appraisal of collateral |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Discount rate range (percentage) | 0.00% | 0.00%
Fair Value, Measurements, Nonrecurring | Impaired loans | Maximum |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Discount rate range (percentage) | 41.00% | 44.00%
Fair Value, Measurements, Nonrecurring | Impaired loans | Maximum | Appraisal of collateral |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Discount rate range (percentage) | 68.00% | 70.00%
Fair Value, Measurements, Nonrecurring | Foreclosed real estate | Appraisal of collateral |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Fair Value Estimate | $ 149 | $ 175
Fair Value, Measurements, Nonrecurring | Foreclosed real estate | Minimum |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Discount rate range (percentage) | 3.00% | 5.00%
Fair Value, Measurements, Nonrecurring | Foreclosed real estate | Minimum | Appraisal of collateral |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Discount rate range (percentage) | 15.00% | 10.00%
Fair Value, Measurements, Nonrecurring | Foreclosed real estate | Maximum |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Discount rate range (percentage) | 6.00% | 6.00%
Fair Value, Measurements, Nonrecurring | Foreclosed real estate | Maximum | Appraisal of collateral |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Discount rate range (percentage) | 100.00% | 20.00%
Fair Value, Measurements, Nonrecurring | Mortgage servicing rights | Discounted cash flows |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Fair Value Estimate | $ 2,532 |
Discount rate range (percentage) | 9.55% |
Fair Value, Measurements, Nonrecurring | Mortgage servicing rights | Weighted average CPR | Discounted cash flows |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Weighted average CPR (percentage) | 12.80% |

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Rate at which loans or a loan portfolio are expected to prepay principal balances, used as an input to measure fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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