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FAIR VALUE - Valuation Methodology and Unobservable Inputs for Level 3 Assets (Details) | 12 Months Ended
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Dec. 31, 2020 USD ($) item | Dec. 31, 2019 USD ($) item
Fair Value, Measurements, Nonrecurring [Member] |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Impaired loans | $ | $ 6,765,000 | $ 12,121,000
Other Real Estate Owned [Member] |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Impaired loans | $ | 316,000 | 316,000
Commercial and Industrial Loans [Member] | Fair Value, Measurements, Nonrecurring [Member] |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Impaired loans | $ | $ 5,082,000 | $ 9,499,000
Valuation Methodology | Collateral based measurements | Collateral based measurements
Unobservable Inputs | Discount to reflect current market conditions and ultimate collectability | Discount to reflect current market conditions
Commercial and Industrial Loans [Member] | Fair Value, Measurements, Nonrecurring [Member] | Minimum |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Range of Inputs (Average) (in hundredths) | 16 | 1
Commercial and Industrial Loans [Member] | Fair Value, Measurements, Nonrecurring [Member] | Maximum |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Range of Inputs (Average) (in hundredths) | 100 | 100
Commercial and Industrial Loans [Member] | Fair Value, Measurements, Nonrecurring [Member] | Weighted Average |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Range of Inputs (Average) (in hundredths) | 55 | 53
Commercial Real Estate and Multi-family Residential Loans | Fair Value, Measurements, Nonrecurring [Member] |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Impaired loans | $ | $ 1,211,000 | $ 1,493,000
Valuation Methodology | Collateral based measurements | Collateral based measurements
Unobservable Inputs | Discount to reflect current market conditions and ultimate collectability | Discount to reflect current market conditions
Commercial Real Estate and Multi-family Residential Loans | Fair Value, Measurements, Nonrecurring [Member] | Minimum |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Range of Inputs (Average) (in hundredths) | 21 | 7
Commercial Real Estate and Multi-family Residential Loans | Fair Value, Measurements, Nonrecurring [Member] | Maximum |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Range of Inputs (Average) (in hundredths) | 74 | 61
Commercial Real Estate and Multi-family Residential Loans | Fair Value, Measurements, Nonrecurring [Member] | Weighted Average |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Range of Inputs (Average) (in hundredths) | 53 | 27
Consumer 1-4 Family Mortgage Loans [Member] | Fair Value, Measurements, Nonrecurring [Member] |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Impaired loans | $ | $ 411,000 | $ 1,061,000
Valuation Methodology | Collateral based measurements | Collateral based measurements
Unobservable Inputs | Discount to reflect current market conditions and ultimate collectability | Discount to reflect current market conditions and ultimate collectability
Consumer 1-4 Family Mortgage Loans [Member] | Fair Value, Measurements, Nonrecurring [Member] | Minimum |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Range of Inputs (Average) (in hundredths) | 10 | 5
Consumer 1-4 Family Mortgage Loans [Member] | Fair Value, Measurements, Nonrecurring [Member] | Maximum |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Range of Inputs (Average) (in hundredths) | 15 | 100
Consumer 1-4 Family Mortgage Loans [Member] | Fair Value, Measurements, Nonrecurring [Member] | Weighted Average |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Range of Inputs (Average) (in hundredths) | 11 | 14
Agribusiness and Agricultural | Fair Value, Measurements, Nonrecurring [Member] |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Impaired loans | $ | $ 61,000 | $ 57,000
Valuation Methodology | Collateral based measurements | Collateral based measurements
Unobservable Inputs | Discount to reflect current market conditions and ultimate collectability | Discount to reflect current market conditions and ultimate collectability
Agribusiness and Agricultural | Fair Value, Measurements, Nonrecurring [Member] | Weighted Average |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Range of Inputs (Average) (in hundredths) | 58 | 61
Other Real Estate Owned [Member] | Fair Value, Measurements, Nonrecurring [Member] |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Impaired loans | $ |  | $ 11,000
Valuation Methodology |  | Collateral based measurements
Unobservable Inputs |  | Discount to reflect current market conditions and ultimate collectability
Other Real Estate Owned [Member] | Fair Value, Measurements, Nonrecurring [Member] | Weighted Average |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Range of Inputs (Average) (in hundredths) |  | 36

X
- Definition This element represents the aggregate of the impaired loans reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The description of the unobservable input used to measure the fair value of assets at the end of the period. + References No definition available. + Details
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Balance Type: | na
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- Definition Value of input used to measure debt instrument, including, but not limited to, convertible and non-convertible debt. + 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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- Definition Description of the valuation processes in place for fair value measurements categorized within Level 3 of the fair value hierarchy. + 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 (f) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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