Note 12 - Share-based Compensation (Details) - Summary of Share-Based Activity shares in Thousands	12 Months Ended
	Aug. 29, 2015 $ / shares shares
Summary of Share-Based Activity [Abstract]
Outstanding, August 30, 2014	618,602
Outstanding, August 30, 2014 | $ / shares	$ 61.86
Granted	130,875
Granted | $ / shares	$ 107.43
Exercised	(95,476)
Exercised | $ / shares	$ 43.10
Forfeited	(9,000)
Forfeited | $ / shares	$ 73.47
Outstanding, August 29, 2015	645,001
Outstanding, August 29, 2015 | $ / shares	$ 73.72
Exercisable, August 29, 2015	98,501
Exercisable, August 29, 2015 | $ / shares	$ 53.23