Note 10 - Geographic Regions - Financial Information by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 29, 2020	Dec. 01, 2019	Nov. 29, 2020	Dec. 01, 2019	Mar. 01, 2020
Net sales	$ 10,372	$ 15,847	$ 31,835	$ 44,520
Long-lived assets	30,744		30,744		$ 26,592
North America [Member]
Net sales	9,863	14,469	30,245	41,546
Long-lived assets	29,215		29,215		24,942
Asia [Member]
Net sales	195	473	499	882
Long-lived assets	1,529		1,529		1,650
Europe [Member]
Net sales	314	$ 905	1,091	$ 2,092
Long-lived assets