Defined Contribution Plan - Additional Information (Detail) - USD ($)	9 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan, number of common stock outstanding, shares	7,669,144		6,656,386
Common stock related to 401(k) Employee Stock Ownership Plan	$ 4,730,000		$ 4,160,000
Employee Stock Ownership Plan
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan, description	The Company makes contributions up to 3% of each participant’s annual compensation and the Company matches 50% of the next 2% contributed by the employee.
Maximum annual contributions amount per employee	$ 22,500	$ 20,500
Maximum annual contributions percentage per employee	3.00%
Employer matching percentage of compensation contributed	50.00%
Employer matching percentage of employees compensation contributed	2.00%
Contributions by company	$ 655,000	$ 561,000
Common stock related to 401(k) Employee Stock Ownership Plan	4,730,000		4,160,000
Fair Value of Common stock related to 401(k) Employee Stock Ownership Plan	$ 6,270,000		5,930,000
Employee Stock Ownership Plan \| Defined Benefit Plans Adjustment
Defined Contribution Plan Disclosure [Line Items]
Number of periods available to purchase shares following distribution	2
Fair Value of Common stock related to 401(k) Employee Stock Ownership Plan	$ 0		$ 0
Stock Compensation Plan \| Employee Stock Ownership Plan
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan, number of common stock outstanding, shares	174,202		154,997
Defined contribution plan, number of common stock outstanding, shares unallocated	0		0

Number of periods to purchase shares following distribution.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Amount of discretionary contributions made by an employer to a defined contribution plan.

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Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

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Percentage employer matches of the employee's percentage contribution matched.

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Maximum amount the employee may contribute to a defined contribution plan.

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Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

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Description of defined contribution pension and other postretirement plans.

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Fair value of unearned shares held by the employee stock ownership plan (ESOP).

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Number of suspense shares held by the Employee Stock Option Plan at balance sheet date. Suspense shares are shares that have not been released, committed to be released or allocated to individual participant accounts.

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Carrying amount of the par value of temporary equity outstanding. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

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