Note 10 - Financial Information by Geographic Region, Sale (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Aug. 28, 2016	Aug. 30, 2015	Aug. 28, 2016	Aug. 30, 2015
North America [Member]
Sales	$ 15,990	$ 21,329	$ 32,827	$ 39,645
Asia [Member]
Sales	11,119	14,557	23,266	31,790
Europe [Member]
Sales	1,949	2,061	4,455	4,341
Sales	$ 29,058	$ 37,947	$ 60,548	$ 75,776

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

Name:	us-gaap_SalesRevenueNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration