Commitments and Contingencies - U.S. Equal Employment Opportunity Commission (Details) - Equal Employment Opportunity Commission - USD ($) $ in Millions		12 Months Ended
Jan. 09, 2017	Jan. 28, 2017
Commitments and Contingencies
Court approved settlement with no finding of wrongdoing	$ 1.0
Length of proposed reporting obligation to EEOC		2 years

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