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LOANS AND ALLOWANCE FOR LOAN LOSSES - Summary of Average Recorded Investment in Impaired Loans and Related Interest Income (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Financing Receivable, Impaired [Line Items] |  |  |
Average Impaired Balance | $ 6,932 | $ 8,249 | $ 7,130
Interest Income Recognized | 54 | 63 | 66
Commercial Real Estate | Owner-occupied |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Impaired Balance | 2,455 | 1,495 | 1,000
Interest Income Recognized | 2 | 2 | 6
Commercial Real Estate | Non-owner occupied |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Impaired Balance | 46 | 1,842 | 392
Interest Income Recognized | 0 | 0 | 0
Commercial Real Estate | Multi-family |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Impaired Balance | 152 | 148 | 182
Interest Income Recognized | 0 | 0 | 0
Commercial Real Estate | Non-owner occupied residential |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Impaired Balance | 217 | 346 | 418
Interest Income Recognized | 0 | 0 | 0
Acquisition and development | 1-4 family residential construction |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Impaired Balance | 0 | 181 | 154
Interest Income Recognized | 0 | 0 | 0
Acquisition and development | Commercial and land development |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Impaired Balance | 21 | 1 | 0
Interest Income Recognized | 0 | 0 | 0
Commercial and industrial |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Impaired Balance | 683 | 322 | 413
Interest Income Recognized | 0 | 0 | 0
Residential mortgage | First lien |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Impaired Balance | 2,582 | 3,234 | 4,012
Interest Income Recognized | 50 | 59 | 58
Residential mortgage | Home equity – term |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Impaired Balance | 13 | 19 | 61
Interest Income Recognized | 0 | 0 | 0
Residential mortgage | Home equity lines of credit |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Impaired Balance | 750 | 657 | 488
Interest Income Recognized | 2 | 2 | 2
Installment and other loans |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Impaired Balance | 13 | 4 | 10
Interest Income Recognized | $ 0 | $ 0 | $ 0

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