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Loans and Allowance for Loan Losses - Summary of Allowance for Loans Losses (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022		Sep. 30, 2021
Financing Receivable Impaired [Line Items]
ALL, beginning of period	$ 17,242	$ 13,007	$ 12,121	[1]	$ 13,827
Charge-offs	(747)	(512)	(6,314)		(1,871)
Recoveries	139	119	833		658
Net charge-offs	(608)	(393)	(5,481)		(1,213)
Provision for loan losses	3,900	0	13,894		0
ALL, end of period	20,534	12,614	20,534		12,614
Commercial and Industrial [Member]
Financing Receivable Impaired [Line Items]
Charge-offs	(6)	(18)	(3,752)		(968)
Recoveries	6	26	43		210
Real Estate, Construction [Member]
Financing Receivable Impaired [Line Items]
Charge-offs	(39)	0	(162)		0
Recoveries	24	0	40		0
Real Estate, Mortgage [Member]
Financing Receivable Impaired [Line Items]
Charge-offs	(51)	(133)	(1,145)		(146)
Recoveries	2	5	393		108
Consumer [Member]
Financing Receivable Impaired [Line Items]
Charge-offs	(651)	(361)	(1,255)		(757)
Recoveries	$ 107	$ 88	$ 357		$ 340
[1] Derived from audited December 31, 2021 Consolidated Financial Statements.

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Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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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.

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