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Income Taxes - Additional Information (Detail) - USD ($) | 3 Months Ended |
--- | --- | ---
Apr. 04, 2021 | Mar. 29, 2020 | Jan. 03, 2021
Income Tax Contingency [Line Items] |  |  |
Write-off of deferred tax assets related to share based compensation |  | $ 400,000 |
CARES act of 2020, net operating loss (NOL) carryback description | the CARES Act allows companies with a net operating loss (“NOL”) in either 2018, 2019 or 2020 to carry back those losses five years. |  |
CARES act of 2020, net operating loss carryback period | 5 years |  |
Unrecognized tax benefits | $ 0 |  | $ 0
Unrecognized tax benefits, period | over the next 12 months |  |
Accrued interest or penalties | $ 0 |  | 0
California [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Disaster recovery credit related to fire | $ 200,000 |  |
Earliest Tax Year [Member] | Federal [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Income tax returns in period | 2017 |  |
Earliest Tax Year [Member] | State and Local [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Income tax returns in period | 2016 |  |
California Enterprise Zone Tax Credits [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Deferred tax assets valuation allowance | $ 500,000 |  | $ 700,000
Tax credits carry forward latest expiration year | 2024 |  |
Change in valuation allowance | $ 200,000 |  |

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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