| Income Taxes - Summary of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Jan. 02, 2021 | Dec. 28, 2019 | 
|---|---|---|
| Deferred tax assets: | ||
| Inventory and inventory related allowance | $ 1,082 | $ 529 | 
| Lease liabilities | 7,311 | 3,663 | 
| Share-based compensation | 2,102 | 1,836 | 
| Book over tax depreciation | 468 | |
| Intangibles | 660 | 1,577 | 
| Sales and bad debt allowances | 1,044 | 712 | 
| Accrued compensation | 436 | 200 | 
| Net operating loss | 24,131 | 25,322 | 
| Other | 186 | 1 | 
| Total deferred tax assets | 37,420 | 33,840 | 
| Valuation allowance | (30,516) | (29,731) | 
| Net deferred tax assets | 6,904 | 4,109 | 
| Deferred tax liabilities: | ||
| Right-of-use assets | 6,879 | 3,572 | 
| Tax over book depreciation | 489 | |
| Other | 25 | 48 | 
| Total deferred tax liabilities | 6,904 | 4,109 | 
| Net deferred tax assets | $ 0 | $ 0 | 
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- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary difference from leasing arrangements. No definition available. 
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- References No definition available. 
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- References No definition available. 
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- Definition Amount of deferred tax liability attributable to taxable temporary differences. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from intangible assets including goodwill. No definition available. 
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from inventory. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from property, plant, and equipment. No definition available. 
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from compensated absences (includes, but not limited to, sick and personal days). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the allowance for doubtful accounts. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from leasing arrangements. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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| X | ||||||||||
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- Definition Amount of deferred tax liability attributable to taxable temporary differences classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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| X | ||||||||||
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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