Share-Based Compensation - Allocation of Stock-based Compensation (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 28, 2018	Jan. 29, 2017	Jan. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation	$ 47,936	$ 30,828	$ 20,468
Net change in share-based compensation capitalized into inventory	(414)	38	(98)
Revenue offset (Warrant)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation	16,219	5,396	0
Cost of sales
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation	1,477	1,591	1,555
Selling, general and administrative expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation	22,423	18,019	10,055
Product development and engineering
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation	$ 7,817	$ 5,822	$ 8,858