Note 3 - Recent Accounting Pronouncements (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	May 27, 2017	May 28, 2016
Income Tax Expense (Benefit)	$ 55,148	$ 74,092
Reclassification of Deferred Tax Assets From Other Current Assets to Other Assets [Member] | February 25, 2017 [Member]
Prior Period Reclassification Adjustment	218,800
Reclassification of Deferred Tax Liabilities From Deferred Rent and Other Liabilities to Other Assets [Member] | February 25, 2017 [Member]
Prior Period Reclassification Adjustment	23,400
Reclassification of Deferred Tax Assets and Liabilities From Other Current and Deferred Rent and Other Liabilities to Other Assets [Member] | February 25, 2017 [Member]
Prior Period Reclassification Adjustment	195,500
Accounting Standards Update 2016-09 [Member]
Income Tax Expense (Benefit)	7,600
Reclassification of Excess Tax Benefits from Financing to Operating Activities [Member] | Three Months Ended May 28, 2016 [Member]
Prior Period Reclassification Adjustment	$ 1,300