Defined Contribution Plan - Additional Information (Detail) - USD ($)	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan, number of common stock outstanding, shares	6,537,551		6,501,024
Common stock related to 401(k) Employee Stock Ownership Plan	$ 2,670		$ 1,730
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	$ 19,500	$ 19,500
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	$ 300,000	$ 273,000
Common stock related to 401(k) Employee Stock Ownership Plan	2,670,000		1,730,000
Fair Value of Common stock related to 401(k) Employee Stock Ownership Plan	$ 4,020,000.00		2,420,000
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	120,015		83,316
Defined contribution plan, number of common stock outstanding, shares unallocated	0		0

Number of periods to purchase shares following distribution.

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

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

+ References

No definition available.

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- Definition

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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- Definition

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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No definition available.

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- Definition

Description of defined contribution pension and other postretirement plans.

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 50
-Paragraph 1
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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 40
-Section 50
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- Definition

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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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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