Condensed Consolidated Statement Of Shareholders' Equity - 9 months ended Jun. 03, 2017 - 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
Exchange of Class B common stock for Class A common stock, Shares						82			(82)
Exercise of common stock options, Shares						335
Exercise of common stock options, Value										22,600				22,600
Common stock issued under associate stock purchase plan, Shares													(40)
Common stock issued under associate stock purchase plan, Value										1,649			$ 1,516	3,165
Issuance of restricted common stock, net of cancellations, Shares						(7)
Shares issued from restricted stock units, including dividend equivalent units, Value		$ 77	$ 77
Shares issued from restricted stock units, including dividend equivalent units, Shares	47
Stock-based compensation										10,375				10,375
Repurchases of common stock, Shares													42
Repurchases of common stock, Value													$ (3,080)	(3,080)
Cash dividends on common stock					$ (60,597)	$ (60,597)		$ (16,035)	$ (16,035)
Dividend equivalent units declared, net of cancellations											(414)			(414)
Foreign currency translation adjustment												(2,161)		(2,161)
Net income											170,683			170,683
Balance, Value at Jun. 03, 2017				$ 53			$ 12			$ 618,718	$ 1,133,785	$ (21,259)	$ (508,320)	$ 1,222,989
Balance, Shares at Jun. 03, 2017						53,450			11,851				8,347