Note 10 - Geographic Regions - Financial Information by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 26, 2017	Nov. 27, 2016	Nov. 26, 2017	Nov. 27, 2016	Feb. 26, 2017
Sales	$ 26,139	$ 26,462	$ 83,392	$ 87,010
Long-lived assets	28,861		28,861		$ 29,448
North America [Member]
Sales	16,570	13,038	49,983	45,865
Long-lived assets	20,888		20,888		20,794
Asia [Member]
Sales	7,326	10,794	27,061	34,060
Long-lived assets	7,733		7,733		8,440
Europe [Member]
Sales	2,243	$ 2,630	6,348	$ 7,085
Long-lived assets	$ 240		$ 240		$ 214