Note 5 - Fair Value Measurements (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Mar. 01, 2014 Income Approach Valuation Technique [Member]	Mar. 01, 2014 Income Approach Valuation Technique [Member] Minimum [Member]	Mar. 01, 2014 Income Approach Valuation Technique [Member] Maximum [Member]	Mar. 01, 2014 Auction Rate Securities [Member]	Mar. 02, 2013 Auction Rate Securities [Member]
Note 5 - Fair Value Measurements (Details) [Line Items]
Available For Sale Securities Temporary Impairment Adjustment Accumulated Other Comprehensive Income Loss (in Dollars)				$ 3.3	$ 2.0
Fair Value Inputs Coupon Rate		0.06%	0.09%
Estimated Redemption Period	5 years
Fair Value Inputs, Discount Rate	1.43%