Note 4 - Income Taxes - Income Tax (Benefit) Provision for Discontinued Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 26, 2023	Feb. 27, 2022	Feb. 28, 2021
Federal	$ 0	$ 0	$ (84)
State and local	0	0	(23)
Foreign	0	0	0
Discontinued Operation, Current Income Tax Expense (Benefit)	0	0	(107)
Federal	0		0
State and local	0		0
Foreign	0		0
Discontinued Operation, Deferred Income Tax Expense (Benefit)	0	0	0
Discontinued Operation, Tax Effect of Discontinued Operation	$ 0	$ 0	$ (107)