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Fair Value Measurement - Carrying Amount and Fair Value of Financial Instruments Not Measured at Fair Value on a Recurring or Nonrecurring Basis (Detail) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financial Assets:
Cash and due from financial institutions	$ 40,914	$ 253,459
Other securities	18,578	17,011
Loans, net of allowance	2,300,841	1,971,238
Bank owned life insurance	53,291	46,641
Accrued interest receivable	9,175	7,385
Financial Liabilities:
Long-term FHLB advances	6,723	75,000
Securities sold under agreement to repurchase	20,155	25,495
Carrying Amount [Member]
Financial Assets:
Cash and due from financial institutions	40,914	264,239
Other securities	18,578	17,011
Loans, held for sale	3,491	1,972
Loans, net of allowance	2,300,841	1,971,238
Bank owned life insurance	53,291	46,641
Accrued interest receivable	9,175	7,385
Financial Liabilities:
Nonmaturing deposits	2,436,219	2,170,253
Time deposits	272,034	246,448
Short-term FHLB advances	55,000
Long-term FHLB advances	6,723	75,000
Securities sold under agreement to repurchase	20,155	25,495
Subordinated debentures	103,778	103,735
Accrued interest payable	970	315
Total Fair Value [Member]
Financial Assets:
Cash and due from financial institutions	40,914	264,239
Other securities	18,578	17,011
Loans, held for sale	3,561	2,011
Loans, net of allowance	2,200,018	1,945,638
Bank owned life insurance	53,291	46,641
Accrued interest receivable	9,175	7,385
Financial Liabilities:
Nonmaturing deposits	2,436,219	2,170,253
Time deposits	270,928	247,053
Short-term FHLB advances	55,000
Long-term FHLB advances	6,716	75,930
Securities sold under agreement to repurchase	20,155	25,495
Subordinated debentures	97,890	111,118
Accrued interest payable	970	315
(Level 1) [Member]
Financial Assets:
Cash and due from financial institutions	40,914	264,239
Other securities	18,578	17,011
Loans, held for sale	3,561	2,011
Bank owned life insurance	53,291	46,641
Accrued interest receivable	9,175	7,385
Financial Liabilities:
Nonmaturing deposits	2,436,219	2,170,253
Short-term FHLB advances	55,000
Securities sold under agreement to repurchase	20,155	25,495
Accrued interest payable	970	315
(Level 3) [Member]
Financial Assets:
Loans, net of allowance	2,200,018	1,945,638
Financial Liabilities:
Time deposits	270,928	247,053
Long-term FHLB advances	6,716	75,930
Subordinated debentures	$ 97,890	$ 111,118

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Short-term Federal Home Loan Bank advances.

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The carrying amount of non maturing deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits and negotiable orders of withdrawal (NOW).

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The carrying amount of a life insurance policy on an officer, executive or employee for which the reporting entity (a bank) is entitled to proceeds from the policy upon death of the insured or surrender of the insurance policy.

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For banks and other depository institutions: Includes cash on hand (currency and coin), cash items in process of collection, noninterest bearing deposits due from other financial institutions (including corporate credit unions), and noninterest bearing balances with the Federal Reserve Banks, Federal Home Loan Banks and central banks.

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Fair value of subordinated debt obligations including, but not limited to, subordinated loan, subordinated bond, subordinated debenture or junior debt.

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Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer.

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Amount of Federal Home Loan Bank (FHLB) and Federal Reserve Bank stock.

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Amount of interest payable on debt, including, but not limited to, trade payables.

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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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