Note 10 - Geographic Regions - Financial Information by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 27, 2017	Aug. 28, 2016	Aug. 27, 2017	Aug. 28, 2016	Feb. 26, 2017
Sales	$ 29,836	$ 29,058	$ 57,253	$ 60,548
Long-lived assets	29,397		29,397		$ 29,448
North America [Member]
Sales	17,997	15,990	33,413	32,827
Long-lived assets	21,221		21,221		20,794
Asia [Member]
Sales	9,702	11,119	19,735	23,266
Long-lived assets	7,950		7,950		8,440
Europe [Member]
Sales	2,137	$ 1,949	4,105	$ 4,455
Long-lived assets	$ 226		$ 226		$ 214