Summary of Significant Accounting Policies - PPE and Insurance Liabilities (Details) - USD ($)	12 Months Ended
	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015
Impairment of long lived assets
Non-cash impairment expense related to leasehold improvements and fixtures and equipment	$ 300,000	$ 0	$ 100,000
Insurance Liabilities
Self-insured retention or deductible amount per claim for workers' compensation	250,000
Self-insured retention or deductible amount per claim for employee medical	$ 100,000
Furniture and Fixtures | Minimum
Property and Equipment, net
Estimated useful lives	3 years
Furniture and Fixtures | Maximum
Property and Equipment, net
Estimated useful lives	5 years
Leasehold Improvements | Minimum
Property and Equipment, net
Estimated useful lives	5 years
Leasehold Improvements | Maximum
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