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FAIR VALUE - Schedule of Additional Qualitative Information (Detail) - Fair Value, Measurements, Nonrecurring $ in Thousands | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
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Impaired loans | Appraisal of collateral |  |
Fair Value Inputs and Valuation Techniques [Line Items] |  |
Fair Value Estimate | $ 1,621 | $ 2,196
Impaired loans | Appraisal of collateral | Minimum |  |
Fair Value Inputs and Valuation Techniques [Line Items] |  |
Asset, measurement input (percent) |  | 0.06
Impaired loans | Appraisal of collateral | Maximum |  |
Fair Value Inputs and Valuation Techniques [Line Items] |  |
Asset, measurement input (percent) |  | 0.33
Mortgage servicing rights | Discounted cash flows |  |
Fair Value Inputs and Valuation Techniques [Line Items] |  |
Fair Value Estimate | $ 2,745 | $ 3,119
Measurement Input, Discount Rate | Impaired loans | Minimum |  |
Fair Value Inputs and Valuation Techniques [Line Items] |  |
Asset, measurement input (percent) | 0.0602 |
Measurement Input, Discount Rate | Impaired loans | Maximum |  |
Fair Value Inputs and Valuation Techniques [Line Items] |  |
Asset, measurement input (percent) | 0.1932 |
Measurement Input, Discount Rate | Impaired loans | Appraisal of collateral | Minimum |  |
Fair Value Inputs and Valuation Techniques [Line Items] |  |
Asset, measurement input (percent) | 0.05 | 0
Measurement Input, Discount Rate | Impaired loans | Appraisal of collateral | Maximum |  |
Fair Value Inputs and Valuation Techniques [Line Items] |  |
Asset, measurement input (percent) | 0.25 | 0.20
Measurement Input, Discount Rate | Mortgage servicing rights | Discounted cash flows |  |
Fair Value Inputs and Valuation Techniques [Line Items] |  |
Asset, measurement input (percent) | 0.0956 | 0.0954
Measurement Input, Constant Prepayment Rate | Mortgage servicing rights |  |
Fair Value Inputs and Valuation Techniques [Line Items] |  |
Asset, measurement input (percent) | 0.1802 |
Measurement Input, Constant Prepayment Rate | Mortgage servicing rights | Discounted cash flows |  |
Fair Value Inputs and Valuation Techniques [Line Items] |  |
Asset, measurement input (percent) |  | 0.1163

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&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 Value of input used to measure servicing asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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