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LOANS AND ALLOWANCE FOR LOAN LOSSES - Summary of Ending Loan Balance Individually Evaluated for Impairment (Detail) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | --- | ---
Loans allocated by: |  |  |  |
Individually evaluated for impairment | $ 11,636 | $ 6,297 |  |
Collectively evaluated for impairment | 1,632,694 | 1,241,360 |  |
Total Loans | 1,644,330 | 1,247,657 |  |
Allowance for loan losses allocated by: |  |  |  |
Individually evaluated for impairment | 36 | 38 |  |
Collectively evaluated for impairment | 14,619 | 13,976 |  |
Allowance for loan losses, Total | 14,655 | 14,014 | $ 12,796 | $ 12,775
Commercial |  |  |  |
Loans allocated by: |  |  |  |
Individually evaluated for impairment | 8,215 | 2,606 |  |
Collectively evaluated for impairment | 1,069,664 | 820,520 |  |
Total Loans | 1,077,879 | 823,126 |  |
Allowance for loan losses allocated by: |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 11,049 | 9,447 |  |
Allowance for loan losses, Total | 11,049 | 9,447 |  |
Consumer |  |  |  |
Loans allocated by: |  |  |  |
Individually evaluated for impairment | 3,421 | 3,691 |  |
Collectively evaluated for impairment | 563,030 | 420,840 |  |
Total Loans | 566,451 | 424,531 |  |
Allowance for loan losses allocated by: |  |  |  |
Individually evaluated for impairment | 36 | 38 |  |
Collectively evaluated for impairment | 3,430 | 3,959 |  |
Allowance for loan losses, Total | 3,466 | 3,997 |  |
Unallocated |  |  |  |
Loans allocated by: |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 0 | 0 |  |
Total Loans | 0 | 0 |  |
Allowance for loan losses allocated by: |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 140 | 570 |  |
Allowance for loan losses, Total | 140 | 570 |  |
Commercial Real Estate | Commercial |  |  |  |
Loans allocated by: |  |  |  |
Individually evaluated for impairment | 6,452 | 2,320 |  |
Collectively evaluated for impairment | 752,413 | 559,424 |  |
Total Loans | 758,865 | 561,744 |  |
Allowance for loan losses allocated by: |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 7,634 | 6,876 |  |
Allowance for loan losses, Total | 7,634 | 6,876 |  |
Acquisition and Development | Commercial |  |  |  |
Loans allocated by: |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 57,403 | 49,436 |  |
Total Loans | 57,403 | 49,436 |  |
Allowance for loan losses allocated by: |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 959 | 817 |  |
Allowance for loan losses, Total | 959 | 817 |  |
Commercial and Industrial |  |  |  |
Loans allocated by: |  |  |  |
Total Loans | 214,554 | 160,964 |  |
Commercial and Industrial | Commercial |  |  |  |
Loans allocated by: |  |  |  |
Individually evaluated for impairment | 1,763 | 286 |  |
Collectively evaluated for impairment | 212,791 | 160,678 |  |
Total Loans | 214,554 | 160,964 |  |
Allowance for loan losses allocated by: |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 2,356 | 1,656 |  |
Allowance for loan losses, Total | 2,356 | 1,656 |  |
Municipal |  |  |  |
Loans allocated by: |  |  |  |
Total Loans | 47,057 | 50,982 |  |
Municipal | Commercial |  |  |  |
Loans allocated by: |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 47,057 | 50,982 |  |
Total Loans | 47,057 | 50,982 |  |
Allowance for loan losses allocated by: |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 100 | 98 |  |
Allowance for loan losses, Total | 100 | 98 |  |
Residential Mortgage | Consumer |  |  |  |
Loans allocated by: |  |  |  |
Individually evaluated for impairment | 3,336 | 3,691 |  |
Collectively evaluated for impairment | 512,380 | 387,429 |  |
Total Loans | 515,716 | 391,120 |  |
Allowance for loan losses allocated by: |  |  |  |
Individually evaluated for impairment | 36 | 38 |  |
Collectively evaluated for impairment | 3,111 | 3,715 |  |
Allowance for loan losses, Total | 3,147 | 3,753 |  |
Installment and other loans |  |  |  |
Loans allocated by: |  |  |  |
Total Loans | 50,735 | 33,411 |  |
Installment and other loans | Consumer |  |  |  |
Loans allocated by: |  |  |  |
Individually evaluated for impairment | 85 | 0 |  |
Collectively evaluated for impairment | 50,650 | 33,411 |  |
Total Loans | 50,735 | 33,411 |  |
Allowance for loan losses allocated by: |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 319 | 244 |  |
Allowance for loan losses, Total | $ 319 | $ 244 |  |

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