Summary of Significant Accounting Policies - Estimated Useful Life of Property and Equipment (Details)	12 Months Ended
	Feb. 02, 2019
Furniture and Fixtures | Minimum
Property, Plant and Equipment [Line Items]
Property and Equipment, Estimated useful life	5 years
Furniture and Fixtures | Maximum
Property, Plant and Equipment [Line Items]
Property and Equipment, Estimated useful life	10 years
Equipment | Minimum
Property, Plant and Equipment [Line Items]
Property and Equipment, Estimated useful life	5 years
Equipment | Maximum
Property, Plant and Equipment [Line Items]
Property and Equipment, Estimated useful life	10 years
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property and Equipment, Estimated useful life	Lesser of useful lives or related lease term
Hardware And Software | Minimum
Property, Plant and Equipment [Line Items]
Property and Equipment, Estimated useful life	3 years
Hardware And Software | Maximum
Property, Plant and Equipment [Line Items]
Property and Equipment, Estimated useful life	7 years