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FAIR VALUE - Assets and Liabilities Measured on Nonrecurring Basis (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Assets and Liabilities Measured on Nonrecurring Basis [Abstract] |  |
Individually assessed loans |  | $ 25,063
Other real estate owned |  | 883
Mortgage servicing rights |  | 682
Contingent consideration | $ 2,900 |
Valuation allowance | 1,834 | 3,874
Mortgage Servicing Rights [Member] |  |
Assets and Liabilities Measured on Nonrecurring Basis [Abstract] |  |
Valuation allowance | 0 | 200
Significant Unobservable Inputs, Level 3 [Member] |  |
Assets and Liabilities Measured on Nonrecurring Basis [Abstract] |  |
Individually assessed loans | 18,794 |
Other real estate owned | 891 |
Mortgage servicing rights | 794 |
Non-recurring [Member] |  |
Assets and Liabilities Measured on Nonrecurring Basis [Abstract] |  |
Individually assessed loans | 18,794 | 25,063
Other real estate owned | 891 | 883
Mortgage servicing rights | 794 | 682
Contingent consideration | 2,900 | 0
Total | 23,379 | 26,628
Non-recurring [Member] | Quoted Prices in Active Markets For Identical Assets, Level 1 [Member] |  |
Assets and Liabilities Measured on Nonrecurring Basis [Abstract] |  |
Individually assessed loans | 0 | 0
Other real estate owned | 0 | 0
Mortgage servicing rights | 0 | 0
Contingent consideration | 0 | 0
Total | 0 | 0
Non-recurring [Member] | Significant Observable Inputs, Level 2 [Member] |  |
Assets and Liabilities Measured on Nonrecurring Basis [Abstract] |  |
Individually assessed loans | 0 | 0
Other real estate owned | 0 | 0
Mortgage servicing rights | 0 | 0
Contingent consideration | 0 | 0
Total | 0 | 0
Non-recurring [Member] | Significant Unobservable Inputs, Level 3 [Member] |  |
Assets and Liabilities Measured on Nonrecurring Basis [Abstract] |  |
Individually assessed loans | 18,794 | 25,063
Other real estate owned | 891 | 883
Mortgage servicing rights | 794 | 682
Contingent consideration | 2,900 | 0
Total | $ 23,379 | $ 26,628

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