Note 4 - Income Taxes - Effective Income Tax Reconciliation (Details)	12 Months Ended
	Feb. 25, 2018	Feb. 26, 2017	Feb. 28, 2016
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	32.85%	34.00%	35.00%
State and local taxes, net of Federal benefit	(13.30%)	2.40%	1.20%
Foreign tax rate differentials	(131.80%)	(24.40%)	(21.00%)
Valuation allowance on deferred tax assets	2.80%	(5.30%)	(0.20%)
Adjustment on tax accruals	17.20%	6.80%	3.30%
FIN 48 change	(44.10%)
Foreign tax credits	(31.40%)	(3.30%)	(1.10%)
U.S. Tax Reform	(1633.40%)
Deferred tax liability on undistributed foreign earnings		(3.40%)	(4.50%)
Subpart F	77.20%
Permanent differences and other	1.30%	2.70%	(0.70%)
	(1722.60%)	9.50%	12.00%