Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 29, 2017	Jul. 30, 2016	Jul. 29, 2017	Jul. 30, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (608)	$ (838)	$ (5,056)	$ (2,975)
Other comprehensive income (loss), net of tax and reclassification adjustments:
Foreign currency translation	8,305	(2,664)	9,784	2,329
Net change in unrealized gain/loss on available-for-sale securities	17	122	28	116
Other comprehensive income (loss), net	8,322	(2,542)	9,812	2,445
Comprehensive income (loss)	$ 7,714	$ (3,380)	$ 4,756	$ (530)