Basis of Presentation and Summary of Critical and Significant Accounting Policies (Details) $ in Thousands		3 Months Ended								12 Months Ended			174 Months Ended
	Nov. 05, 2018 USD ($)	Feb. 02, 2019 USD ($) Store	Nov. 03, 2018 USD ($)	Aug. 04, 2018 USD ($)	May 05, 2018 USD ($)	Feb. 03, 2018 USD ($)	Oct. 28, 2017 USD ($)	Jul. 29, 2017 USD ($)	Apr. 29, 2017 USD ($)	Feb. 02, 2019 USD ($) Store Segment shares	Feb. 03, 2018 USD ($) shares	Jan. 28, 2017 USD ($)	Feb. 02, 2019 USD ($) Store shares
Business [Abstract]
Number of weeks in fiscal year										364 days	371 days	364 days
Acquisition [Abstract]
Cash paid for acquistion										$ 86,837	$ 0	$ 0
Reportable Segments [Abstract]
Number of reportable segments | Segment										1
Marketing [Abstract]
Gross marketing costs										$ 17,608	13,356	10,382
Marketing reimbursements										(2,850)	(3,010)	(3,319)
Net Marketing costs										14,758	10,346	7,063
Stock Repurchase Program [Abstract]
Repurchased common stock (in shares) | shares													20,700,000
Cost of repurchased common stock										16,124	53,794	42,115	$ 609,800
Cash and Cash Equivalents [Abstract]
Cash equivalents related to credit and debit card transactions		$ 5,500				$ 3,900				$ 5,500	3,900		5,500
Days to collect debit and credit card transactions										3 days
Investments [Abstract]
Total Investments		2,500				2,900				$ 2,500	2,900		2,500
Investments included in prepaid expenses		100				500				100	500		100
Investments included in other assets		2,400				2,400				2,400	2,400		2,400
Net unrealized holding (losses) gains										(300)	300
Balance Sheet Presentation [Abstract]
Prepaid expenses and other		16,343				13,430				16,343	13,430		16,343
Other assets, net		5,004				3,198				5,004	3,198		5,004
Other liabilities		13,826				2,576				13,826	2,576		13,826
Inventories [Abstract]
Accrual for inventory obsolescence		4,500				5,200				4,500	5,200		4,500
Accrual for inventory shrinkage		1,600				1,400				1,600	1,400		1,600
Property and Equipment [Abstract]
Total property and equipment		271,492				258,010				271,492	258,010		271,492
Less: accumulated depreciation and amortization		156,098				148,312				156,098	148,312		156,098
Total property and equipment, net		$ 115,394				109,698				$ 115,394	109,698		$ 115,394
Construction in progress, stores		69.00%								69.00%			69.00%
Goodwill and Indefinite-Lived Intangible Assets [Abstract]
Goodwill and intangible asset impairment										$ 0
Capitalized Interest [Abstract]
Interest cost capitalized										0	0	0
Deferred Rent [Abstract]
Liability for the current portion of unamortized landlord allowances		$ 4,900				5,100				4,900	5,100		$ 4,900
Liability for long-term portion of unamortized landlord allowances		14,800				15,100				14,800	15,100		14,800
Estimate of the non-cash portion of landlord allowances										$ 100	1,200
Revenue Recognition [Abstract]
Days allowed for entire purchase price for merchandise placed on layaway										30 days
Net sales		305,964	$ 216,888	$ 211,123	$ 274,707	266,738	$ 237,834	$ 187,958	$ 275,688	$ 1,008,682	968,219	972,960
Sales Returns [Abstract]
Net sales returns										47,700	43,800	37,800
Customer Loyalty Programs [Member]
Revenue Recognition [Abstract]
Net deferred revenue liability		2,200				200				2,200	200		2,200
Gift Cards [Member]
Revenue Recognition [Abstract]
Net deferred revenue liability		7,500				6,200				7,500	$ 6,200		7,500
Revenue recognized from contract liability										2,100
Net sales										600
Sales Returns [Member]
Revenue Recognition [Abstract]
Revenue recognized from contract liability										$ 800
2018 Program [Member]
Stock Repurchase Program [Abstract]
Repurchased common stock (in shares) | shares										800,000
Cost of repurchased common stock										$ 16,500
Number of restricted stock unit awards repurchased to satisfy tax withholding requirements (in shares) | shares										18,765
Tax withholding requirements										$ 400
Remaining amount available under stock repurchase program		188,000								188,000			188,000
2015 Program [Member]
Stock Repurchase Program [Abstract]
Stock Repurchase Program, Authorized Amount		$ 300,000								$ 300,000			$ 300,000
Repurchased common stock (in shares) | shares											2,800,000
Cost of repurchased common stock											$ 54,500
Number of restricted stock unit awards repurchased to satisfy tax withholding requirements (in shares) | shares											24,432
Tax withholding requirements											$ 700
Minimum [Member]
Reportable Segments [Abstract]
Number of operating stores | Store		1,100								1,100			1,100
Land [Member]
Property and Equipment [Abstract]
Total property and equipment		$ 7,277				7,277				$ 7,277	7,277		$ 7,277
Buildings [Member]
Property and Equipment [Abstract]
Total property and equipment		21,311				21,311				$ 21,311	21,311		21,311
Estimated service lives										39 years
Buildings Under Capital Lease [Member]
Property and Equipment [Abstract]
Total property and equipment		3,363				3,652				$ 3,363	3,652		3,363
Equipment [Member]
Property and Equipment [Abstract]
Total property and equipment		96,402				93,163				$ 96,402	93,163		96,402
Equipment [Member] | Minimum [Member]
Property and Equipment [Abstract]
Estimated service lives										3 years
Equipment [Member] | Maximum [Member]
Property and Equipment [Abstract]
Estimated service lives										7 years
Equipment Under Capital Lease [Member]
Property and Equipment [Abstract]
Total property and equipment		678				0				$ 678	0		678
Automobiles Under Capital Lease [Member]
Property and Equipment [Abstract]
Total property and equipment		1,829				1,702				1,829	1,702		1,829
Furniture and Fixtures [Member]
Property and Equipment [Abstract]
Total property and equipment		36,980				34,892				$ 36,980	34,892		36,980
Estimated service lives										7 years
Leasehold Improvements [Member]
Property and Equipment [Abstract]
Total property and equipment		101,572				91,218				$ 101,572	91,218		101,572
Leasehold Improvements [Member] | Minimum [Member]
Property and Equipment [Abstract]
Estimated service lives										3 years
Leasehold Improvements [Member] | Maximum [Member]
Property and Equipment [Abstract]
Estimated service lives										10 years
Construction in Progress [Member]
Property and Equipment [Abstract]
Total property and equipment		2,080				$ 4,795				$ 2,080	4,795		2,080
Footwear [Member]
Revenue Recognition [Abstract]
Net sales										579,766	531,552	505,939
Apparel [Member]
Revenue Recognition [Abstract]
Net sales										276,731	269,512	282,158
Equipment [Member]
Revenue Recognition [Abstract]
Net sales										152,185	$ 167,155	$ 184,862
Short-term Below Market Lease Intangible [Member] | Current Asset [Member]
Balance Sheet Presentation [Abstract]
Prepaid expenses and other		320								320			320
Short-term Below Market Lease Intangible [Member] | Non-current Asset [Member]
Balance Sheet Presentation [Abstract]
Other assets, net		1,201								1,201			1,201
Long-term Above Market Leases Intangible [Member] | Current Liability [Member]
Balance Sheet Presentation [Abstract]
Other accrued expenses		605								605			605
Long-term Above Market Leases Intangible [Member] | Non-current Liability [Member]
Balance Sheet Presentation [Abstract]
Other liabilities		$ 1,966								$ 1,966			$ 1,966
Purchases [Member] | Supplier Concentration Risk [Member] | Nike [Member]
Inventories [Abstract]
Percentage of purchases from supplier										65.40%	57.90%	57.00%
Purchases [Member] | Supplier Concentration Risk [Member] | Adidas [Member]
Inventories [Abstract]
Percentage of purchases from supplier										10.00%	11.00%	5.50%
Purchases [Member] | Supplier Concentration Risk [Member] | Under Armour [Member]
Inventories [Abstract]
Percentage of purchases from supplier										5.70%	10.80%	16.40%
City Gear [Member]
Acquisition [Abstract]
Purchase price	$ 88,000
Cash paid for acquistion	$ 86,800