Note 8 - Stock-Based Compensation - Changes in the Company's Restricted Stock (Details) - Restricted Stock [Member] shares in Thousands	6 Months Ended
	Aug. 29, 2015 $ / shares shares
Unvested restricted stock, beginning of period (in shares)	3,592
Unvested restricted stock, beginning of period (in dollars per share) | $ / shares	$ 57.90
Granted (in shares)	709
Granted (in dollars per share) | $ / shares	$ 70.36
Vested (in shares)	(907)
Vested (in dollars per share) | $ / shares	$ 48.89
Forfeited (in shares)	(134)
Forfeited (in dollars per share) | $ / shares	$ 61.47
Unvested restricted stock, end of period (in shares)	3,260
Unvested restricted stock, end of period (in dollars per share) | $ / shares	$ 62.97