Net Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 04, 2017	Feb. 27, 2016	Mar. 04, 2017	Feb. 27, 2016
Net Income Per Share [Abstract]
Net income as reported	$ 53,559	$ 49,525	$ 107,847	$ 104,554
Less: Distributed net income available to participating securities	(36)	(80)	(113)	(169)
Less: Undistributed net income available to participating securities	(84)	(106)	(199)	(266)
Undistributed and distributed net income available to common shareholders: Basic	53,439	49,339	107,535	104,119
Add: Undistributed net income allocated to participating securities	84	106	199	266
Less: Undistributed net income reallocated to participating securities	(83)	(106)	(197)	(265)
Undistributed and distributed net income available to common shareholders: Diluted	$ 53,440	$ 49,339	$ 107,537	$ 104,120
Weighted average shares outstanding for basic net income per share	56,620,000	61,187,000	56,500,000	61,242,000
Effect of dilutive securities	593,000	126,000	410,000	119,000
Weighted average shares outstanding for diluted net income per share	57,213,000	61,313,000	56,910,000	61,361,000
Basic	$ 0.94	$ 0.81	$ 1.90	$ 1.70
Diluted	$ 0.93	$ 0.80	$ 1.89	$ 1.70
Antidilutive stock options	0	1,025,000	0	1,025,000