Condensed Consolidated Statements Of Shareholders' Equity - 3 months ended Dec. 03, 2016 - USD ($) shares in Thousands, $ in Thousands	Restricted Stock Units [Member] Class A Common Stock [Member]	Restricted Stock Units [Member] Additional Paid-In Capital [Member]	Restricted Stock Units [Member]	Class A Common Stock [Member] Common Stock [Member]	Class A Common Stock [Member] Retained Earnings [Member]	Class A Common Stock [Member]	Class B Common Stock [Member] Common Stock [Member]	Class B Common Stock [Member] Retained Earnings [Member]	Class B Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Class A Treasury Stock [Member]	Total
Balance, Value at Sep. 03, 2016				$ 53			$ 12			$ 584,017	$ 1,040,148	$ (19,098)	$ (506,756)	$ 1,098,376
Balance, Shares at Sep. 03, 2016						52,993			11,933				8,345
Exercise of common stock options including income tax bnefit, Shares						104								104
Exercise of common stock options including income tax benefits, Value										7,116				$ 7,116
Common stock issued under associate stock purchase plan, Shares													(14)
Common stock issued under associate stock purchase plan, Value										382			$ 527	909
Shares issued from restricted stock units, including dividend equivalent units, Value		$ 65	$ 65
Shares issued from restricted stock units, including dividend equivalent units, Shares	36
Stock-based compensation										3,538				3,538
Repurchases of common stock, Shares													40
Repurchases of common stock, Value													$ (2,894)	(2,894)
Cash dividends on common stock					$ (20,125)	$ (20,125)		$ (5,370)	$ (5,370)
Dividend equivalent units declared, net of cancellations											(139)			(139)
Foreign currency translation adjustment												(1,547)		(1,547)
Net income											54,103			54,103
Balance, Value at Dec. 03, 2016				$ 53			$ 12			$ 595,118	$ 1,068,617	$ (20,645)	$ (509,123)	$ 1,134,032
Balance, Shares at Dec. 03, 2016						53,133			11,933				8,371