Income Taxes - Summary of Income Tax Contingencies (Details) $ in Thousands	9 Months Ended
Oct. 28, 2018 USD ($)
Income Tax Contingency [Line Items]
Beginning balance	$ 16,059
Additions based on tax positions related to the current year	2,145
Ending balance	$ 18,204

Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319

Name:	us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration