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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of cost to be recognized for option under share-based payment arrangement.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Gross number of share options (or share units) granted during the period.

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Price of a single share of a number of saleable stocks of a company.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement.

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Share-based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			6 Months Ended
	Jul. 04, 2021	Jun. 28, 2020	Mar. 29, 2020	Jul. 04, 2021	Jun. 28, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation expense	$ 500	$ 400		$ 900	$ 900
Expected dividend yield			0.00%
Shares withheld for tax requirements				70,228
Tax withholding payments for share-based compensation				$ 1,046	$ 97
Common Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Closing stock price per share	$ 25.86			$ 25.86
Share Option Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Maximum expiration period of share based payment awards granted				10 years
Granted, shares				0	257,000
Weighted-average grant-date fair value per share					$ 1.25
Unrecognized compensation expense	$ 400			$ 400
Weighted-average period of recognition				2 years
Share Option Awards [Member] \| Share-based Compensation Award, Tranche One [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting rights (as percentage)				25.00%
Performance Shares [Member] \| Share-based Compensation Award, Tranche One [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting rights (as percentage)				25.00%
Performance Shares [Member] \| Share-based Compensation Award, Tranche One [Member] \| Non-Employee Directors [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting rights (as percentage)				100.00%
Nonvested Share Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average period of recognition				2 years 8 months 12 days
Fair value of nonvested share awards				$ 5,300	$ 400
Issuance of nonvested share awards, Shares				248,550	321,600
Weighted-average grant-date fair value per share, granted				$ 15.61	$ 1.69
Unrecognized compensation expenses	4,100			$ 4,100
Nonvested Share Unit Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average period of recognition				10 months 24 days
Fair value of nonvested share awards				$ 100	$ 200
Issuance of nonvested share awards, Shares				2,614
Weighted-average grant-date fair value per share, granted				$ 28.69
Unrecognized compensation expenses	$ 100			$ 100
2019 Equity Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for future grant	1,837,899			1,837,899