Interest Income and Other (Expense) Income, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 30, 2017	Jul. 31, 2016	Jul. 30, 2017	Jul. 31, 2016
Other Income and Expenses [Abstract]
Interest income	$ 132	$ 10	$ 226	$ 37
Non-recoverable VAT tax	(153)	(129)	(285)	(235)
Foreign currency transaction (loss) gain	(916)	120	(1,402)	211
Miscellaneous income (expense)	733	(137)	625	(194)
Non-operating expense, net	$ (204)	$ (136)	$ (836)	$ (181)