Allowance for Loan Losses - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) SecurityLoan	Dec. 31, 2021 USD ($) SecurityLoan	Dec. 31, 2020 USD ($) SecurityLoan
Accounts Notes And Loans Receivable [Line Items]
Period for calculating Loss migration rates of portfolio segments	3 years
Allowance for loan losses	$ 28,511	$ 26,641
Provision for loan losses	$ 1,752	830	$ 10,112
Percentage of eligible paycheck protection program loan			100.00%
Number of days past due for loans to be considered as nonperforming	90 days
Reasonable period for nonperforming TDRs to be returned to performing status	6 months
Number of days reaching where loans are considered for nonaccrual status	90 days
Conditions where loans are considered for nonaccrual status	A loan may be returned to accruing status only if one of three conditions are met: the loan is well-secured and none of the principal and interest has been past due for a minimum of 90 days; the loan is a TDR and the borrower has made a minimum of six months payments; or the principal and interest payments are reasonably assured and a sustained period of performance has occurred, generally six months.
Gross interest income recorded on nonaccrual loans	$ 384	307	$ 536
Interest income on nonaccrual loans recognized on cash basis	$ 451	$ 716	$ 477
Defaulted loans | SecurityLoan	0	0	0
Impaired loans	greater than $350
Foreclosed assets	$ 0
Residential mortgages in process of foreclosure	399	$ 293
Allowance for loan losses recorded for acquired loans	0	0
Vision Financial Group [Member]
Accounts Notes And Loans Receivable [Line Items]
Provision for loan losses	452,000
TDRs [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for loan losses	$ 7	$ 18	$ 35