Interest Expense, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 01, 2015	Aug. 02, 2014	Aug. 01, 2015	Aug. 02, 2014
Interest expense, net
Interest expense	$ 350	$ 101	$ 780	$ 205
Interest income	(6)	(3)	(7)	(6)
Interest expense, net	$ 344	$ 98	$ 773	$ 199