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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, 2021
Dec. 31, 2020
Dec. 31, 2019
Activity in allowance for loan losses      
Balance, beginning of year $ 20,151 $ 14,655 $ 14,014
Provision for loan losses 1,090 5,325 900
Charge-offs (1,118) (1,011) (865)
Recoveries 1,057 1,182 606
Balance, end of year 21,180 20,151 14,655
Unallocated      
Activity in allowance for loan losses      
Balance, beginning of year 218 140 570
Provision for loan losses 19 78 (430)
Charge-offs 0 0 0
Recoveries 0 0 0
Balance, end of year 237 218 140
Commercial      
Activity in allowance for loan losses      
Balance, beginning of year 16,247 11,049 9,447
Provision for loan losses 1,661 4,927 1,497
Charge-offs (956) (751) (324)
Recoveries 991 1,022 429
Balance, end of year 17,943 16,247 11,049
Commercial | Commercial Real Estate      
Activity in allowance for loan losses      
Balance, beginning of year 11,151 7,634 6,876
Provision for loan losses 710 2,745 515
Charge-offs (293) (3) (25)
Recoveries 469 775 268
Balance, end of year 12,037 11,151 7,634
Commercial | Acquisition and Development      
Activity in allowance for loan losses      
Balance, beginning of year 1,114 959 817
Provision for loan losses 938 146 139
Charge-offs 0 0 0
Recoveries 10 9 3
Balance, end of year 2,062 1,114 959
Commercial | Commercial and Industrial      
Activity in allowance for loan losses      
Balance, beginning of year 3,942 2,356 1,656
Provision for loan losses 23 2,096 841
Charge-offs (663) (748) (299)
Recoveries 512 238 158
Balance, end of year 3,814 3,942 2,356
Commercial | Municipal      
Activity in allowance for loan losses      
Balance, beginning of year 40 100 98
Provision for loan losses (10) (60) 2
Charge-offs 0 0 0
Recoveries 0 0 0
Balance, end of year 30 40 100
Consumer      
Activity in allowance for loan losses      
Balance, beginning of year 3,686 3,466 3,997
Provision for loan losses (590) 320 (167)
Charge-offs (162) (260) (541)
Recoveries 66 160 177
Balance, end of year 3,000 3,686 3,466
Consumer | Residential Mortgage      
Activity in allowance for loan losses      
Balance, beginning of year 3,362 3,147 3,753
Provision for loan losses (517) 203 (347)
Charge-offs (92) (114) (386)
Recoveries 32 126 127
Balance, end of year 2,785 3,362 3,147
Consumer | Installment and Other      
Activity in allowance for loan losses      
Balance, beginning of year 324 319 244
Provision for loan losses (73) 117 180
Charge-offs (70) (146) (155)
Recoveries 34 34 50
Balance, end of year $ 215 $ 324 $ 319