Note 13 - Geographic Regions - Financial Information by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Feb. 25, 2018	Nov. 26, 2017	Aug. 27, 2017	May 28, 2017	Feb. 26, 2017	Nov. 27, 2016	Aug. 28, 2016	May 29, 2016	Feb. 25, 2018	Feb. 26, 2017	Feb. 28, 2016
Sales	$ 27,804	$ 26,139	$ 29,836	$ 27,417	$ 27,599	$ 26,462	$ 29,058	$ 31,490	$ 111,196	$ 114,609	$ 145,855
Long-lived assets	27,755				29,448				27,755	29,448	32,592
North America [Member]
Sales									67,321	60,949	75,215
Long-lived assets	20,046				20,794				20,046	20,794	22,846
Asia [Member]
Sales									35,802	44,613	61,264
Long-lived assets	7,483				8,440				7,483	8,440	9,478
Europe [Member]
Sales									8,073	9,047	9,376
Long-lived assets	$ 226				$ 214				$ 226	$ 214	$ 268