Note 14 - Segment and Geographical Information - Net Revenue Based on the Ship-to Location (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jan. 28, 2017	Oct. 29, 2016	Jul. 30, 2016	Apr. 30, 2016	Jan. 30, 2016	Oct. 31, 2015	Aug. 01, 2015	May 02, 2015	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015
Net revenue	$ 42,724	$ 62,729	$ 61,316	$ 53,775	$ 51,450	$ 61,581	$ 58,307	$ 55,912	$ 220,544	$ 227,250	$ 188,313
Asia [Member]
Net revenue									180,104	172,773	152,571
North America [Member]
Net revenue									32,732	42,335	20,746
Europe [Member]
Net revenue									7,692	10,292	12,012
Other Regions [Member]
Net revenue									$ 16	$ 1,850	$ 2,984