Basis of Presentation and Summary of Critical and Significant Accounting Policies - Additional Information (Details)			3 Months Ended								12 Months Ended			186 Months Ended
	Apr. 04, 2020 USD ($) shares	Nov. 05, 2018 USD ($)	Feb. 01, 2020 USD ($) store	Nov. 02, 2019 USD ($)	Aug. 03, 2019 USD ($)	May 04, 2019 USD ($)	Feb. 02, 2019 USD ($)	Nov. 03, 2018 USD ($)	Aug. 04, 2018 USD ($)	May 05, 2018 USD ($)	Feb. 01, 2020 USD ($) segment store shares	Feb. 02, 2019 USD ($) shares	Feb. 03, 2018 USD ($) shares	Feb. 01, 2020 USD ($) store shares
Acquisition [Abstract]
Cash paid at closing											$ 0	$ 86,837,000	$ 0
Number of stores | store			1,100								1,100			1,100
Number of reportable segments | segment											1
Stock repurchased (in shares) | shares											1,600,000	800,000	2,800,000	22,300,000
Payments for repurchase of common stock											$ 35,500,000	$ 16,500,000	$ 54,500,000
Number of restricted stock unit awards repurchased to satisfy tax withholding requirements (in shares) | shares											29,432	18,765	24,432
Tax withholding requirements											$ 600,000	$ 400,000	$ 700,000
Remaining amount available under stock repurchase program			$ 153,100,000								$ 153,100,000			$ 153,100,000
Days to collect debit and credit card transactions											three
Credit and debit card receivables			5,200,000				$ 5,500,000				$ 5,200,000	5,500,000		5,200,000
Inventory valuation reserves			3,200,000				4,500,000				3,200,000	4,500,000		3,200,000
Accrual for inventory shrinkage			$ 1,600,000				1,600,000				$ 1,600,000	1,600,000		$ 1,600,000
Number of stores closed | store			95								95			95
Construction in progress, stores			74.00%								74.00%			74.00%
Goodwill and intangible asset impairment											$ 0
Days allowed for entire purchase price for merchandise placed on layaway											30 days
Contract with customer, liability, current			$ 2,700,000				2,200,000				$ 2,700,000	2,200,000		$ 2,700,000
Net sales			313,024,000	$ 275,475,000	$ 252,440,000	$ 343,295,000	305,964,000	$ 216,888,000	$ 211,123,000	$ 274,707,000	1,184,234,000	1,008,682,000	968,219,000
Sales returns											48,000,000.0	47,700,000	$ 43,800,000
Gift Cards
Acquisition [Abstract]
Liability, gift card revenue			7,700,000				$ 7,500,000				7,700,000	7,500,000		7,700,000
Net sales											600,000
Revenue recognized from contract liability											$ 1,700,000	$ 2,100,000
Cost of Goods, Total | Supplier Concentration Risk | Nike
Acquisition [Abstract]
Percentage of purchases from supplier											67.70%	65.40%	57.90%
Cost of Goods, Total | Supplier Concentration Risk | Adidas
Acquisition [Abstract]
Percentage of purchases from supplier											7.20%	10.00%	11.00%
Cost of Goods, Total | Supplier Concentration Risk | Under Armour
Acquisition [Abstract]
Percentage of purchases from supplier											3.50%	5.70%	10.80%
Subsequent Event
Acquisition [Abstract]
Stock repurchased (in shares) | shares	500,000
Payments for repurchase of common stock	$ 10,000,000
Number of restricted stock unit awards repurchased to satisfy tax withholding requirements (in shares) | shares	30,895
Tax withholding requirements	$ 400,000
2015 Program
Acquisition [Abstract]
Authorized repurchase amount			$ 300,000,000.0								$ 300,000,000.0			$ 300,000,000.0
City Gear
Acquisition [Abstract]
Consideration transferred		$ 88,000,000.0
Cash paid at closing		$ 86,800,000