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Share-based Compensation - Additional Information (Detail) - USD ($) | 3 Months Ended
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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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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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