Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($)	12 Months Ended
	Feb. 28, 2016	Mar. 01, 2015	Mar. 02, 2014	Mar. 03, 2013
Debt Securities [Member]
Cash and Cash Equivalents, at Carrying Value	$ 39,968,000	$ 0
Company’s Wholly Owned Foreign Subsidiaries [Member]
Cash and Marketable Securities	231,572,000
Cash and Cash Equivalents, Foreign Financial Institutions [Member]
Cash and Cash Equivalents, at Carrying Value	$ 28,878,000	28,970,000
Machinery, Equipment, Furniture and Fixtures [Member]
Property, Plant and Equipment, Useful Life	10 years
Land, Buildings and Improvements [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life	25 years
Land, Buildings and Improvements [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life	30 years
Cash and Cash Equivalents, at Carrying Value	$ 97,757,000	$ 141,538,000	$ 133,150,000	$ 186,117,000
Cash and Marketable Securities	$ 247,425,000
Sales Returns and Allowance as Percentage of Sales	1.00%	1.00%	1.00%
Finite-Lived Intangible Asset, Useful Life	15 years
Shipping, Handling and Transportation Costs	$ 2,855,000	$ 3,398,000	$ 3,833,000
Depreciation, Depletion and Amortization	3,369,000	3,559,000	3,757,000
Impairment of Long-Lived Assets Held-for-use	0	0	0
Goodwill, Impairment Loss	$ 0	$ 0	$ 0