Note 12 - Discontinued Operations - Summary of Discontinued Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 26, 2023	Feb. 27, 2022	Feb. 28, 2021
(Loss) earnings before income taxes	$ 0	$ 0	$ (435)
Income tax (benefit) provision	0	0	(107)
Net (loss) earnings from discontinued operations	0	0	(328)
Electronics Business [Member]
Net sales	0	0	0
Cost of sales	0	0	0
Gross profit	0	0	0
Selling, general and administrative expenses	0	0	8
Restructuring charges	0	0	427
(Loss) earnings from discontinued operations	0	0	(435)
Other income	0	0	0
(Loss) earnings before income taxes	0	0	(435)
Income tax (benefit) provision	0	0	(107)
Net (loss) earnings from discontinued operations	$ 0	$ 0	$ (328)