Note 12 - Net Revenue to Each Significant Country Based on the Ship-to Location (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 30, 2016	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 2015
CHINA
Revenue, Net	$ 33,110	$ 21,127	$ 60,567	$ 43,305
TAIWAN, PROVINCE OF CHINA
Revenue, Net	9,991	15,246	23,955	24,165
UNITED STATES
Revenue, Net	11,269	9,950	17,858	22,095
THAILAND
Revenue, Net	2,916	4,608	5,737	9,593
Rest of the World [Member]
Revenue, Net	4,030	7,376	6,974	15,061
Revenue, Net	$ 61,316	$ 58,307	$ 115,091	$ 114,219