Summary of Significant Accounting Policies - Additional Information (Details) ft² in Thousands, $ in Thousands	3 Months Ended		12 Months Ended
	May 02, 2020 USD ($) ft²	May 04, 2019 USD ($)	Feb. 02, 2019	Feb. 01, 2020 USD ($)
Accounting Policies [Line Items]
Sales returns reserve	$ 1,700	$ 1,700		$ 1,400
Liability for unredeemed gift cards	8,100	7,400		9,300
Revenues	$ 77,289	130,303
Expiration period of partial points earned under customer loyalty program	365 days
Deferred revenue from loyalty program	$ 2,600	1,700		$ 2,400
Lessee terms				10 years
Income tax (benefit) expense	$ (10,597)	$ 298
Effective income tax rate, percent	37.90%	30.60%
Income taxes receivable	$ 7,200
Breakage Revenue for Gift Cards
Accounting Policies [Line Items]
Revenues	2,700	$ 4,200
Customer Loyalty Program
Accounting Policies [Line Items]
Revenue recognized from customer liability	$ 900	300
10 and 12 Whatney, Irvine, California | Office and warehouse space
Accounting Policies [Line Items]
Area of property | ft²	172
Rent expense incurred	$ 500	500
11 Whatney, Irvine, California | Office and warehouse space
Accounting Policies [Line Items]
Area of property | ft²	26
Rent expense incurred	$ 100	100
11 Whatney, Irvine, California | Minimum | Office and warehouse space
Accounting Policies [Line Items]
Percent of annual lease amount increase			3.00%
11 Whatney, Irvine, California | Maximum | Office and warehouse space
Accounting Policies [Line Items]
Percent of annual lease amount increase			7.00%
17 Pasteur, Irvine, California | Office and warehouse space
Accounting Policies [Line Items]
Area of property | ft²	81
Rent expense incurred	$ 200	$ 200
17 Pasteur, Irvine, California | Minimum | Office and warehouse space
Accounting Policies [Line Items]
Percent of annual lease amount increase			3.00%
17 Pasteur, Irvine, California | Maximum | Office and warehouse space
Accounting Policies [Line Items]
Percent of annual lease amount increase			7.00%