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Share-based Compensation - Additional Information (Detail) - USD ($)	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation expense	$ 400,000	$ 500,000
Expected dividend yield		0.00%
Shares withheld for tax requirements	70,228
Tax withholding payments for share-based compensation	$ 1,046,000	$ 97,000
Common Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Closing stock price per share	$ 16.48
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	$ 400,000
Weighted-average period of recognition	2 years 3 months 18 days
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	$ 2,800,000	$ 300,000
Issuance of nonvested share awards, Shares	235,480	241,600
Weighted-average grant-date fair value per share, granted	$ 14.89	$ 1.50
Unrecognized compensation expenses	$ 4,200,000
Nonvested Share Unit Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average period of recognition	2 months 12 days
Fair value of nonvested share awards	$ 0	$ 0
Unrecognized compensation expenses	$ 15,000
2019 Equity Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for future grant	1,880,396

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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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