Segment Information - Narrative (Details)	3 Months Ended	9 Months Ended	12 Months Ended
	Oct. 29, 2017	Oct. 29, 2017 reportable_segment operating_segment	Jan. 31, 2016 reportable_segment operating_segment
Segment Reporting Information [Line Items]
Number of operating segments that aggregate into one reportable segment | operating_segment		4	4
Number of reportable segments | reportable_segment		1	1
Net sales [Member]
Segment Reporting Information [Line Items]
Minimum concentration risk threshold	10.00%	10.00%