Summary of Significant Accounting Policies - PPE and Insurance Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 01, 2020	Feb. 02, 2019	Feb. 03, 2018
Fiscal Year
Length of fiscal year	364 days	364 days	371 days
Impairment of long lived assets
Non-cash impairment expense related to leasehold improvements and fixtures and equipment	$ 500	$ 1,300	$ 500
Insurance Liabilities
Self-insured retention or deductible amount per claim for workers' compensation	250
Self-insured retention or deductible amount per claim for employee medical	$ 100
Furniture, fixtures and equipment | Minimum
Property and Equipment, net
Estimated useful lives	3 years
Furniture, fixtures and equipment | Maximum
Property and Equipment, net
Estimated useful lives	5 years
Leasehold improvements
Property and Equipment, net
Estimated useful lives	5 years
Software
Property and Equipment, net
Estimated useful lives	7 years
Building and Building Improvements | Minimum
Property and Equipment, net
Estimated useful lives	15 years
Building and Building Improvements | Maximum
Property and Equipment, net
Estimated useful lives	20 years