Income Taxes - Components of Provision for Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 28, 2018	Jan. 29, 2017	Jan. 31, 2016
Current tax provision
Federal	$ 2,108	$ 0	$ 0
State	0	0	0
Foreign	13,442	16,034	8,709
Subtotal	15,550	16,034	8,709
Deferred tax provision (benefit)
Federal	7,701	107	6,679
State	0	0	(96)
Foreign	(60)	2,258	(6,410)
Subtotal	7,641	2,365	173
Provision for taxes	$ 23,191	$ 18,399	$ 8,882