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Summary of Significant Accounting Policies - Additional Information (Detail)		3 Months Ended		12 Months Ended
	Mar. 20, 2020	Apr. 04, 2021 USD ($)	Mar. 29, 2020 USD ($)	Jan. 03, 2021 USD ($) Supplier
Accounting Policies [Line Items]
Reporting period, minimum		364 days
Reporting period, maximum		371 days
Concentration risk, suppliers | Supplier				680
Concentration risk, largest supplier | Supplier				20
Suppliers accounted for total purchases				36.40%
Vendor represented greater than of total purchases | Supplier				1
Number of performance obligation		one
Stored value card redemption revenue recognized		$ 1,700,000	$ 1,900,000
Outstanding stored value card liabilities		$ 7,000,000.0		$ 7,500,000
Stored value cards redeemed period		2 years
Impairment charges		$ 0	0
Merchandise [Member] | Accounting Standards Update 2014-09 | ASC 606 [Member]
Accounting Policies [Line Items]
Estimated right of return related to estimated sales returns		900,000		1,200,000
Allowance for sales returns reserve		1,800,000		$ 2,400,000
Stored Value Card Breakage Revenue [Member]
Accounting Policies [Line Items]
Recognized stored value card breakage revenue		100,000	$ 100,000
Nike [Member]
Accounting Policies [Line Items]
Suppliers accounted for total purchases				8.50%
Percentage of vendors represented greater than of total purchases				5.00%
Suppliers accounted for total sales				7.20%
COVID-19 [Member]
Accounting Policies [Line Items]
Percentage of minimum number of retail store locations closed	50.00%
Deferred, lease liability		$ 400,000		$ 600,000
COVID-19 [Member] | California [Member]
Accounting Policies [Line Items]
Percentage of stores		52.00%
First Quarter [Member]
Accounting Policies [Line Items]
Interim reporting periods		91 days		91 days
Second Quarter [Member]
Accounting Policies [Line Items]
Interim reporting periods		91 days		91 days
Third Quarter [Member]
Accounting Policies [Line Items]
Interim reporting periods		91 days		91 days
Fourth Quarter [Member]
Accounting Policies [Line Items]
Interim reporting periods		91 days		98 days

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Concentration risk number of customers that accounted for greater than five percent of purchases.

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Concentration Risk Number Of Suppliers

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Concentration risk percentage of purchases.

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Concentration risk percentage of sales.

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Deferrals, lease liability

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Percentage of minimum number of retail store locations temporarily closed.

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Percentage of stores.

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Stored value card liabilities.

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Stored value card redemption revenue recognized.

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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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Amount of right to recover product from customer on settling refund liability.

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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Description of timing for satisfying performance obligation in contract with customer. Includes, but is not limited to, as services are rendered, and upon shipment, delivery or completion of service.

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