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LOANS AND ALLOWANCE FOR LOAN LOSSES - Impaired Loans by Class (Detail) - USD ($) $ in Thousands | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with a Specific Allowance, Recorded Investment (Book Balance) | $ 729 | $ 643
Impaired Loans with a Specific Allowance, Unpaid Principal Balance (Legal Balance) | 731 | 643
Impaired Loans with a Specific Allowance, Related Allowance | 132 | 43
Impaired Loans with No Specific Allowance, Recorded Investment (Book Balance) | 6,571 | 7,330
Impaired Loans with No Specific Allowance, Unpaid Principal Balance (Legal Balance) | 9,196 | 10,559
Commercial real estate | Owner-occupied |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with a Specific Allowance, Recorded Investment (Book Balance) | 0 | 0
Impaired Loans with a Specific Allowance, Unpaid Principal Balance (Legal Balance) | 0 | 0
Impaired Loans with a Specific Allowance, Related Allowance | 0 | 0
Impaired Loans with No Specific Allowance, Recorded Investment (Book Balance) | 1,081 | 1,070
Impaired Loans with No Specific Allowance, Unpaid Principal Balance (Legal Balance) | 2,274 | 2,236
Commercial real estate | Non-owner occupied |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with a Specific Allowance, Recorded Investment (Book Balance) |  | 0
Impaired Loans with a Specific Allowance, Unpaid Principal Balance (Legal Balance) |  | 0
Impaired Loans with a Specific Allowance, Related Allowance |  | 0
Impaired Loans with No Specific Allowance, Recorded Investment (Book Balance) |  | 736
Impaired Loans with No Specific Allowance, Unpaid Principal Balance (Legal Balance) |  | 1,323
Commercial real estate | Multi-family |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with a Specific Allowance, Recorded Investment (Book Balance) | 0 | 0
Impaired Loans with a Specific Allowance, Unpaid Principal Balance (Legal Balance) | 0 | 0
Impaired Loans with a Specific Allowance, Related Allowance | 0 | 0
Impaired Loans with No Specific Allowance, Recorded Investment (Book Balance) | 190 | 199
Impaired Loans with No Specific Allowance, Unpaid Principal Balance (Legal Balance) | 364 | 368
Commercial real estate | Non-owner occupied residential |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with a Specific Allowance, Recorded Investment (Book Balance) | 0 | 0
Impaired Loans with a Specific Allowance, Unpaid Principal Balance (Legal Balance) | 0 | 0
Impaired Loans with a Specific Allowance, Related Allowance | 0 | 0
Impaired Loans with No Specific Allowance, Recorded Investment (Book Balance) | 436 | 452
Impaired Loans with No Specific Allowance, Unpaid Principal Balance (Legal Balance) | 697 | 706
Acquisition and development | Commercial and land development |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with a Specific Allowance, Recorded Investment (Book Balance) |  | 0
Impaired Loans with a Specific Allowance, Unpaid Principal Balance (Legal Balance) |  | 0
Impaired Loans with a Specific Allowance, Related Allowance |  | 0
Impaired Loans with No Specific Allowance, Recorded Investment (Book Balance) |  | 1
Impaired Loans with No Specific Allowance, Unpaid Principal Balance (Legal Balance) |  | 16
Commercial and industrial |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with a Specific Allowance, Recorded Investment (Book Balance) | 91 | 0
Impaired Loans with a Specific Allowance, Unpaid Principal Balance (Legal Balance) | 93 | 0
Impaired Loans with a Specific Allowance, Related Allowance | 91 | 0
Impaired Loans with No Specific Allowance, Recorded Investment (Book Balance) | 386 | 594
Impaired Loans with No Specific Allowance, Unpaid Principal Balance (Legal Balance) | 419 | 715
Residential mortgage | First lien |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with a Specific Allowance, Recorded Investment (Book Balance) | 638 | 643
Impaired Loans with a Specific Allowance, Unpaid Principal Balance (Legal Balance) | 638 | 643
Impaired Loans with a Specific Allowance, Related Allowance | 41 | 43
Impaired Loans with No Specific Allowance, Recorded Investment (Book Balance) | 3,848 | 3,650
Impaired Loans with No Specific Allowance, Unpaid Principal Balance (Legal Balance) | 4,634 | 4,399
Residential mortgage | Home equity - term |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with a Specific Allowance, Recorded Investment (Book Balance) | 0 | 0
Impaired Loans with a Specific Allowance, Unpaid Principal Balance (Legal Balance) | 0 | 0
Impaired Loans with a Specific Allowance, Related Allowance | 0 | 0
Impaired Loans with No Specific Allowance, Recorded Investment (Book Balance) | 109 | 93
Impaired Loans with No Specific Allowance, Unpaid Principal Balance (Legal Balance) | 120 | 103
Residential mortgage | Home equity - lines of credit |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with a Specific Allowance, Recorded Investment (Book Balance) | 0 | 0
Impaired Loans with a Specific Allowance, Unpaid Principal Balance (Legal Balance) | 0 | 0
Impaired Loans with a Specific Allowance, Related Allowance | 0 | 0
Impaired Loans with No Specific Allowance, Recorded Investment (Book Balance) | 516 | 529
Impaired Loans with No Specific Allowance, Unpaid Principal Balance (Legal Balance) | 654 | 659
Installment and other loans |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with a Specific Allowance, Recorded Investment (Book Balance) | 0 | 0
Impaired Loans with a Specific Allowance, Unpaid Principal Balance (Legal Balance) | 0 | 0
Impaired Loans with a Specific Allowance, Related Allowance | 0 | 0
Impaired Loans with No Specific Allowance, Recorded Investment (Book Balance) | 5 | 6
Impaired Loans with No Specific Allowance, Unpaid Principal Balance (Legal Balance) | $ 34 | $ 34

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