Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) shares in Thousands	3 Months Ended								12 Months Ended
	Feb. 01, 2020	Nov. 02, 2019	Aug. 03, 2019	May 04, 2019	Feb. 02, 2019	Nov. 03, 2018	Aug. 04, 2018	May 05, 2018	Feb. 01, 2020	Feb. 02, 2019	Feb. 03, 2018
Accounting Policies [Line Items]
Lease terms (in years)	10 years				10 years				10 years	10 years
Shipping and handling cost									$ 432,592,000	$ 417,582,000	$ 401,529,000
Inventory markdowns									53,300,000	49,500,000	50,000,000
Reserve for unexecuted markdowns	$ 1,100,000				$ 600,000				1,100,000	600,000
Liability for unredeemed gift cards	9,300,000				8,700,000				9,300,000	8,700,000
Revenue	172,479,000	$ 154,780,000	$ 161,738,000	$ 130,303,000	170,612,000	$ 146,826,000	$ 157,406,000	$ 123,634,000	$ 619,300,000	598,478,000	576,899,000
Expiration period for customer awards after issuance									45 days
Expiration period of partial points earned under customer loyalty program									365 days
Deferred revenue from loyalty program	2,400,000				1,700,000				$ 2,400,000	1,700,000
Advertising expense									$ 15,900,000	$ 13,200,000	$ 12,100,000
Incremental common shares used in calculating diluted EPS (in shares)									255	490	270
FDIC insured amount	250,000				250,000				$ 250,000	$ 250,000
Sales Returns and Allowances
Accounting Policies [Line Items]
Sales returns reserve	$ 1,400,000				$ 1,400,000				$ 1,400,000	1,400,000
Furniture and Fixtures
Accounting Policies [Line Items]
Estimated useful lives of the assets (in years)									5 years
Computer Software
Accounting Policies [Line Items]
Estimated useful lives of the assets (in years)									3 years
Maximum | Equipment
Accounting Policies [Line Items]
Estimated useful lives of the assets (in years)									7 years
Maximum | Cash and Cash Equivalents
Accounting Policies [Line Items]
Short term investment maturity period (in days)									90 days
Minimum | Equipment
Accounting Policies [Line Items]
Estimated useful lives of the assets (in years)									5 years
Shipping and Handling
Accounting Policies [Line Items]
Shipping and handling cost									$ 12,100,000	10,800,000	$ 7,900,000
Revenue									2,900,000	2,700,000	3,300,000
Breakage Revenue for Gift Cards
Accounting Policies [Line Items]
Revenue									18,900,000	17,900,000	18,500,000
Customer Loyalty Program
Accounting Policies [Line Items]
Contract with Customer, Liability, Revenue Recognized									$ 6,100,000	$ 1,700,000	$ 1,300,000