Segment Information - Net Sales Activity by Geographic Region (Details)	3 Months Ended		6 Months Ended
	Jul. 28, 2019	Jul. 29, 2018	Jul. 28, 2019	Jul. 29, 2018
Other: Warrant Shares
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	0.00%	0.00%	0.00%	(7.00%)
Net sales
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	100.00%	100.00%	100.00%	100.00%
Net sales | Asia-Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	74.00%	75.00%	76.00%	72.00%
Net sales | North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	16.00%	19.00%	14.00%	28.00%
Net sales | Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	10.00%	6.00%	10.00%	7.00%