Note 9 - Employee Benefit Plans (Details Textual) $ in Millions	12 Months Ended
	Feb. 27, 2016 USD ($)	Feb. 28, 2015 USD ($)	Mar. 01, 2014 USD ($)
Number of Defined Contribution Plans	5
Defined Contribution Plan, Cost Recognized	$ 13.9	$ 13.2	$ 12.5
Nonqualified Deferred Compensation Plan Cost Recognized	0.6	0.7	$ 0.5
Defined Benefit Pension Plan, Liabilities, Noncurrent	20.4	18.4
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	6.5	6.1
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax	$ 4.2	$ 4.0