Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Oct. 28, 2017	Oct. 28, 2017
Income Tax Disclosure [Abstract]
Excess Tax Benefit from Share-based Compensation, Operating Activities	$ 209	$ 10,126

Amount of cash outflow for realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 20
-Section 55
-Paragraph 24
-URI http://asc.fasb.org/extlink&oid=65896087&loc=d3e11374-113907

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration