Segment Information - Net Sales Activity by Geographic Region (Details) - Net sales [Member]	3 Months Ended		6 Months Ended
	Jul. 29, 2018	Jul. 30, 2017	Jul. 29, 2018	Jul. 30, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	100.00%	100.00%	100.00%	100.00%
Asia-Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	75.00%	73.00%	72.00%	75.00%
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	19.00%	21.00%	28.00%	21.00%
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	6.00%	8.00%	7.00%	7.00%
Other: Warrant Shares
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	(0.00%)	(2.00%)	(7.00%)	(3.00%)