Note 4 - Income Taxes - Effective Income Tax Reconciliation (Details)	12 Months Ended
	Feb. 26, 2023	Feb. 27, 2022	Feb. 28, 2021
Statutory U.S. Federal tax rate	21.00%	21.00%	21.00%
State and local taxes, net of Federal benefit	3.80%	4.30%	5.90%
Foreign tax rate differentials	(0.40%)	2.70%	0.70%
NQSO Expirations and Cancellations	2.10%	0.00%	0.00%
Adjustment on tax accruals	0.90%	(0.30%)	0.00%
ASC 740-10 change	(24.80%)	0.50%	0.90%
Foreign tax credits	0.00%	0.00%	(0.10%)
Subpart F	0.50%	(1.00%)	1.10%
Permanent differences and other	(0.40%)	1.00%	(0.80%)
Effective Income Tax Rate Reconciliation, Percent	2.70%	28.20%	28.70%