Segment Information - Revenue by Sales Channel (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 28, 2018	Oct. 29, 2017	Oct. 28, 2018	Oct. 29, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 173,550	$ 150,304	$ 467,190	$ 447,233
Sales Channel, Through Intermediary
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	120,009	103,463	332,304	298,089
Sales Channel, Directly to Consumer
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	53,541	53,090	156,387	163,870
Other: Warrant Shares
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue offset	$ 0	$ (6,249)	$ (21,501)	$ (14,726)