Business Organization and Summary of Significant Accounting Policies - Operating Leases (Details)	12 Months Ended
Jan. 28, 2017
Minimum
Property, Plant and Equipment [Line Items]
Amortization period	60 days
Maximum
Property, Plant and Equipment [Line Items]
Amortization period	90 days

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration