Share-based Compensation (Details) (USD $)			12 Months Ended				1 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended
	Aug. 27, 2011	Nov. 27, 1996	Aug. 27, 2011 Stock Options [Member]	Aug. 30, 2003 Stock Options [Member]	Aug. 27, 2011 Restricted Stock Awards, Non-Employee [Member]	Aug. 28, 2010 Restricted Stock Awards, Non-Employee [Member]	Apr. 05, 2010 Performance Restricted Stock Awards [Member]	Aug. 27, 2011 Performance Restricted Stock Awards [Member]	Aug. 28, 2010 Performance Restricted Stock Awards [Member]	Apr. 05, 2010 Restricted Stock Awards, CEO [Member]	Aug. 27, 2011 Restricted Stock Awards, CEO [Member]	Aug. 28, 2010 Restricted Stock Awards, CEO [Member]	Aug. 27, 2011 Stock Options, Non-Employee [Member]	Aug. 27, 2011 Stock Appreciation Rights (SARs) [Member]	Aug. 27, 2011 Share-based Awards [Member]	Aug. 27, 2011 Restricted Stock [Member]
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of shares of common stock reserved for issuance under stock incentive plan (in shares)		1,500,000
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment award, vesting period (in years)			5Y	4Y	1Y	1Y	4Y			6Y
Expiration term of the stock options from grant date (in years)			10Y	8Y									8Y
Number of shares granted during the period (in shares)					6,000	12,000	350,000			50,000				15,000
Compensation expense								$ 4,300,000	$ 1,800,000		$ 400,000	$ 200,000
Compensation expense for all share-based compensation for the next five fiscal years [Abstract]
2012	6,003,000														1,184,000	4,819,000
2013	4,973,000														907,000	4,066,000
2014	3,415,000														690,000	2,725,000
2015	2,072,000														375,000	1,697,000
2016	727,000														47,000	680,000
Total	17,190,000														3,203,000	13,987,000
Weighted average period for compensation cost to be recognized related to non-vested awards (in years)															2.6	3.1
Total compensation cost not yet recognized related to non-vested awards	$ 17,200,000
Summary of common stock option activity [Roll Forward]
Number of shares outstanding, beginning of period (in shares)			447,300
Number of shares granted (in shares)			127,500
Number of shares exercised (in shares)			(42,400)
Number of shares forfeited (in shares)			(5,000)
Number of shares outstanding, end of period (in shares)			527,400
Number of shares, exercisable, end of period (in shares)			122,400
Weighted average exercise price, outstanding, beginning of period (in dollars per share)			$ 35.49
Weighted average exercise price, granted (in dollars per share)			$ 46.82
Weighted average exercise price, exercised (in dollars per share)			$ 32.07
Weighted average exercise price, forfeited (in dollars per share)			$ 37.83
Weighted average exercise price, outstanding, end of period (in dollars per share)			$ 38.48
Weighted average exercise price, exercisable, end of period (in dollars per share)			$ 36.36