Income Taxes - Summary of Changes in the Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
Jan. 28, 2018	Jan. 29, 2017	Jan. 31, 2016
Income Tax Disclosure [Abstract]
Beginning balance	$ 82,961	$ 77,383	$ 75,536
Additions	74	5,578	9,055
Releases	(41,985)	0	(7,208)
Ending balance	$ 41,050	$ 82,961	$ 77,383

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319

Name:	us-gaap_DeferredTaxAssetsValuationAllowance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant