Note 4 - Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 26, 2023	Feb. 27, 2022	Feb. 28, 2021
Balance, beginning of year	$ 4,078	$ 4,117	$ 4,164
Tax positions - Discontinued Ops in prior period	0	0	(47)
Gross decreases - tax positions in prior period	(2,980)	(39)	0
Gross increases - current period tax positions	326	0	0
Audit settlements	0	0	0
Balance, end of year	$ 1,424	$ 4,078	$ 4,117