Summary of Significant Accounting Policies - Recent Accounting Pronouncements (Details) $ in Millions	12 Months Ended
	Jan. 28, 2017 lease	Jan. 30, 2016 USD ($)
Minimum
Lessor Leasing Arrangements, Operating Leases, Term of Contract	12 months
New Accounting Pronouncement ASU 2015-17 not yet adopted
Number of leases | lease	533
Average remaining contractual rent period	3 years 1 month 6 days
Pro Forma | Pro Forma effect of New Accounting Pronouncement ASU 2015-17 not yet adopted
Reclassification of deferred tax assets from current deferred tax assets to noncurrent deferred tax assets | $		$ 4.8