Stock-Based Compensation - Summary of Director Awards Activity (Detail) - Director - $ / shares	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items]
Options Outstanding, Beginning balance, Shares	2,416	4,831
Shares awarded, Shares	61,186	60,998
Shares vested, Shares	(52,068)	(63,413)
Options Outstanding, Ending balance, Shares	11,534	2,416
Options Outstanding, Beginning balance, Weighted Average Exercise Price	$ 6.90	$ 6.90
Shares awarded, Weighted Average Fair Value	6.57	6.59
Shares vested, Weighted Average Fair Value	(6.65)	(6.60)
Options Outstanding, Ending balance, Weighted Average Exercise Price	$ 6.57	$ 6.90

Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items]

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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- Definition

Number of options outstanding, including both vested and non-vested options.

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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