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LOANS AND ALLOWANCE FOR LOAN LOSSES - Schedule of Activity in Allowance for Loan Losses (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Activity in allowance for loan losses |  |  |
Balance, beginning of year | $ 14,655 | $ 14,014 | $ 12,796
Provision for loan losses | 5,325 | 900 | 800
Charge-offs | (1,011) | (865) | (464)
Recoveries | 1,182 | 606 | 882
Balance, end of year | 20,151 | 14,655 | 14,014
Unallocated |  |  |
Activity in allowance for loan losses |  |  |
Balance, beginning of year | 140 | 570 | 475
Provision for loan losses | 78 | (430) | 95
Charge-offs | 0 | 0 | 0
Recoveries | 0 | 0 | 0
Balance, end of year | 218 | 140 | 570
Commercial |  |  |
Activity in allowance for loan losses |  |  |
Balance, beginning of year | 11,049 | 9,447 | 8,710
Provision for loan losses | 4,927 | 1,497 | 177
Charge-offs | (751) | (324) | (24)
Recoveries | 1,022 | 429 | 584
Balance, end of year | 16,247 | 11,049 | 9,447
Commercial | Commercial Real Estate |  |  |
Activity in allowance for loan losses |  |  |
Balance, beginning of year | 7,634 | 6,876 | 6,763
Provision for loan losses | 2,745 | 515 | (442)
Charge-offs | (3) | (25) | (17)
Recoveries | 775 | 268 | 572
Balance, end of year | 11,151 | 7,634 | 6,876
Commercial | Acquisition and Development |  |  |
Activity in allowance for loan losses |  |  |
Balance, beginning of year | 959 | 817 | 417
Provision for loan losses | 146 | 139 | 396
Charge-offs | 0 | 0 | (7)
Recoveries | 9 | 3 | 11
Balance, end of year | 1,114 | 959 | 817
Commercial | Commercial and Industrial |  |  |
Activity in allowance for loan losses |  |  |
Balance, beginning of year | 2,356 | 1,656 | 1,446
Provision for loan losses | 2,096 | 841 | 209
Charge-offs | (748) | (299) | 0
Recoveries | 238 | 158 | 1
Balance, end of year | 3,942 | 2,356 | 1,656
Commercial | Municipal |  |  |
Activity in allowance for loan losses |  |  |
Balance, beginning of year | 100 | 98 | 84
Provision for loan losses | (60) | 2 | 14
Charge-offs | 0 | 0 | 0
Recoveries | 0 | 0 | 0
Balance, end of year | 40 | 100 | 98
Consumer |  |  |
Activity in allowance for loan losses |  |  |
Balance, beginning of year | 3,466 | 3,997 | 3,611
Provision for loan losses | 320 | (167) | 528
Charge-offs | (260) | (541) | (440)
Recoveries | 160 | 177 | 298
Balance, end of year | 3,686 | 3,466 | 3,997
Consumer | Residential Mortgage |  |  |
Activity in allowance for loan losses |  |  |
Balance, beginning of year | 3,147 | 3,753 | 3,400
Provision for loan losses | 203 | (347) | 363
Charge-offs | (114) | (386) | (148)
Recoveries | 126 | 127 | 138
Balance, end of year | 3,362 | 3,147 | 3,753
Consumer | Installment and Other |  |  |
Activity in allowance for loan losses |  |  |
Balance, beginning of year | 319 | 244 | 211
Provision for loan losses | 117 | 180 | 165
Charge-offs | (146) | (155) | (292)
Recoveries | 34 | 50 | 160
Balance, end of year | $ 324 | $ 319 | $ 244

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- Definition Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 + Details
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- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 + Details
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- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=121614798&loc=d3e15032-111544 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707 + Details
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