Condensed Consolidated Statement Of Shareholders' Equity (USD $) In Thousands	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. 01, 2012	$ 53			$ 16			$ 483,682	$ 970,965	$ (2,443)	$ (265,162)	$ 1,187,111
Balance, Shares at Sep. 01, 2012	52,582			15,560						5,342
Exchange of Class B common stock for Class A common stock, Shares	760			(760)
Exchange of Class B common stock for Class A common stock, Value	1			(1)			0	0	0	0	0
Exercise of common stock options, including income tax benefits of $4,350, Shares	384			0						0
Exercise of common stock options, including income tax benefits of $4,350, Value	0			0			20,251	0	0	0	20,251
Common stock issued under associate stock purchase plan, Shares	0			0						(30)
Common stock issued under associate stock purchase plan, Value	0			0			949	0	0	1,145	2,094
Grant of restricted common stock, net of cancellations, Shares	130			0						0
Stock-based compensation	0			0			8,104	0	0	0	8,104
Purchase of treasury stock, Shares	0									50
Purchase of treasury stock, Value	0			0			0	0	0	(3,629)	(3,629)
Cash dividends paid on common stock	0	(28,815)	(28,815)	0	(9,040)	(9,040)	0		0	0
Issuance of dividend equivalent units	0			0			115	(115)	0	0	0
Cumulative foreign currency translation adjustment	0			0			0	0	(777)	0	(777)
Net income	0			0			0	119,266	0	0	119,266
Balance, Value at Mar. 02, 2013	$ 54			$ 15			$ 513,101	$ 1,052,261	$ (3,220)	$ (267,646)	$ 1,294,565
Balance, Shares at Mar. 02, 2013	53,856			14,800						5,362