Commitments and Contingencies - Additional Information (Detail) $ in Thousands		1 Months Ended	3 Months Ended				12 Months Ended
	May 21, 2020 USD ($)	Jul. 31, 2019 Store	Apr. 04, 2021 USD ($)	Jan. 03, 2021 USD ($)	Jun. 28, 2020 USD ($) Store	Dec. 29, 2019 USD ($)	Jan. 02, 2022 USD ($)	Jan. 03, 2021 USD ($)
Commitments And Contingencies [Line Items]
Received cash condemnation settlement from Orange County Transport Authority pre-tax gain amount								$ 2,500
Cash condemnation settlement from Orange Country Transport Authority	$ 2,500
Loss on property and equipment								237
Number of stores destroyed in civil unrest | Store					7
Number of stores destroyed in fire | Store		1
Loss contingency, total loss					$ 600	$ 800
Advance on settlement				$ 500
Deduction on settlement			$ 300	200
Proceeds from insurance recovery							$ 1,083	1,077
Proceeds related to property damage and business interruption				2,800
Proceeds from insurance recovery - property and equipment			200	1,700			249	1,750
Gain on recovery of insurance proceeds - lost profit margin and business interruption			500	800			460	1,077
Gain on insurance associated with business interruption				$ 300
Proceeds from cash insurance recovery total, net of insurance deductible			1,300
Gain on recovery of insurance proceeds - property and equipment			200				$ 249	1,750
Lost Inventory and Profit Margin [Member]
Commitments And Contingencies [Line Items]
Proceeds from insurance recovery			1,000
Business Interruption [Member]
Commitments And Contingencies [Line Items]
Proceeds from insurance recovery			$ 100
Other Income [Member]
Commitments And Contingencies [Line Items]
Received cash condemnation settlement from Orange County Transport Authority pre-tax gain amount					2,500
Loss on property and equipment					$ 200
Selling and Administrative Expenses [Member]
Commitments And Contingencies [Line Items]
Attorneys' fees related to fees settlement								$ 100