Stock-Based Compensation - Summary of Grants of Performance-Based Restricted Stock Units Associated with Senior Executives and Key Employees (Detail) - Performance-Based Restricted Stock Units [Member] - $ / shares		Jul. 22, 2021		Jul. 18, 2019
Senior Executives [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance-Based Restricted Stock Units Awarded	[1],[2]	122,477		93,653
Restricted Stock Units Expected to Vest	[2],[3]	61,237		5,749
Price Per Share	[2]	$ 14.75	[4]	$ 19.04	[5]
Vesting Period	[2]	3 years		3 years
Key Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance-Based Restricted Stock Units Awarded	[1],[6]	21,900		29,227
Restricted Stock Units Expected to Vest	[3],[6]	10,950		3,442
Price Per Share	[4],[6]	$ 14.75		$ 18.49
Vesting Period	[6]	3 years		3 years

[1] Amounts represent the maximum number of common stock shares that could be earned if certain performance targets are met as defined in the related restricted stock unit agreements.

[2] Performance-based restricted stock units awarded to senior executives.

[3] Compensation cost is based on an assessment each reporting period to determine the probability of whether or not certain performance goals will be met and how many shares are expected to be earned as of the end of the vesting period. These amounts represent the number of shares that were expected to vest as of August 1, 2021.

[4] Price per share represents the closing price of our common stock on the date of grant.

[5] Price per share represents the fair market value per share ($1.03 per $1, or an increase of $0.55 to the closing price of our common stock on the date of grant) determined using the Monte Carlo simulation model for the market-based total shareholder return component and the closing price of our common stock ($18.49) for the performance-based component of the performance-based restricted stock units granted to senior executives on July 18, 2019.

[6] Performance-based restricted stock units awarded to key employees.