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LOANS AND ALLOWANCE FOR LOAN LOSSES - Schedule of Impaired Loans That Are TDRs (Detail) $ in Thousands | Dec. 31, 2020 USD ($) contract | Dec. 31, 2019 USD ($) contract
--- | --- | ---
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract | 16 | 20
Recorded Investment | $ | $ 1,254 | $ 3,247
Accruing |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract | 11 | 11
Recorded Investment | $ | $ 934 | $ 979
Accruing | Commercial Real Estate | Owner-occupied |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract | 1 | 1
Recorded Investment | $ | $ 28 | $ 30
Accruing | Residential mortgage | First lien |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract | 9 | 9
Recorded Investment | $ | $ 898 | $ 931
Accruing | Residential mortgage | Home equity - lines of credit |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract | 1 | 1
Recorded Investment | $ | $ 8 | $ 18
Nonaccruing |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract | 5 | 9
Recorded Investment | $ | $ 320 | $ 2,268
Nonaccruing | Commercial Real Estate | Owner-occupied |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract | 0 | 4
Recorded Investment | $ | $ 0 | $ 1,909
Nonaccruing | Residential mortgage | First lien |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract | 5 | 5
Recorded Investment | $ | $ 320 | $ 359

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