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FAIR VALUE DISCLOSURES - Valuation Methodology and Unobservable Inputs for Level 3 Assets (Details) - Fair Value, Measurements, Nonrecurring $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2021 USD ($) | Dec. 31, 2020 USD ($)
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Fair Value | $ 21,333 | $ 6,765
Commercial and industrial loans |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Valuation Methodology | Collateral based measurements | Collateral basedmeasurements
Unobservable Inputs | Discount to reflect current market conditions and ultimate collectability | Discount to reflect current market conditions and ultimate collectability
Commercial and industrial loans | Collateral Based Measurements | Measurement Input, Discount Rate |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Fair Value | $ 17,507 | $ 5,082
Commercial and industrial loans | Average | Collateral Based Measurements | Measurement Input, Discount Rate |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Average | 0.58 | 0.55
Commercial and industrial loans | Minimum | Collateral Based Measurements | Measurement Input, Discount Rate |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Average |  | 0.16
Commercial and industrial loans | Maximum | Collateral Based Measurements | Measurement Input, Discount Rate |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Average |  | 1
Commercial real estate and multi-family residential loans |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Valuation Methodology | Collateral based measurements | Collateral basedmeasurements
Unobservable Inputs | Discount to reflect current market conditions and ultimate collectability | Discount to reflect current market conditions and ultimate collectability
Commercial real estate and multi-family residential loans | Collateral Based Measurements | Measurement Input, Discount Rate |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Fair Value | $ 3,783 | $ 1,211
Commercial real estate and multi-family residential loans | Average | Collateral Based Measurements | Measurement Input, Discount Rate |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Average |  | 0.53
Commercial real estate and multi-family residential loans | Minimum | Collateral Based Measurements | Measurement Input, Discount Rate |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Average |  | 0.21
Commercial real estate and multi-family residential loans | Maximum | Collateral Based Measurements | Measurement Input, Discount Rate |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Average |  | 0.74
Agri-business and agricultural loans |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Valuation Methodology | Collateral based measurements | Collateral basedmeasurements
Unobservable Inputs | Discount to reflect current market conditions and ultimate collectability | Discount to reflect current market conditions and ultimate collectability
Agri-business and agricultural loans | Collateral Based Measurements | Measurement Input, Discount Rate |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Fair Value | $ 43 | $ 61
Agri-business and agricultural loans | Average | Collateral Based Measurements | Measurement Input, Discount Rate |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Average | 0.70 | 0.58
Consumer 1-4 family loans |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Valuation Methodology |  | Collateral basedmeasurements
Unobservable Inputs |  | Discount to reflect current market conditions and ultimate collectability
Consumer 1-4 family loans | Collateral Based Measurements | Measurement Input, Discount Rate |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Fair Value |  | $ 411
Consumer 1-4 family loans | Average | Collateral Based Measurements | Measurement Input, Discount Rate |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Average |  | 0.11
Consumer 1-4 family loans | Minimum | Collateral Based Measurements | Measurement Input, Discount Rate |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Average |  | 0.10
Consumer 1-4 family loans | Maximum | Collateral Based Measurements | Measurement Input, Discount Rate |  |
Valuation Methodology and Unobservable Inputs For Level 3 Assets Measured At Fair Value [Line Items] |  |
Average |  | 0.15

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