Summary of Significant Accounting Policies (Tables)

12 Months Ended

Aug. 25, 2012

Summary of Significant Accounting Policies [Abstract]

Estimated Useful Lives of Property, Plant, and Equipment

Property, plant and equipment are recorded at cost. Expenditures for maintenance and repairs are expensed as incurred, while expenditures for renewals and betterments are capitalized. The Company provides for depreciation on the straight-line method based on the following estimated useful lives:

Buildings	30-40 years
Leasehold improvements	Shorter of useful life or term of lease
Machinery and equipment	3-10 years
Motor vehicles	3-5 years

Stock Options, Valuation Assumptions

The fair value of each Share-Based Award is estimated on the date of grant using the Black-Scholes option pricing model with the following weighted average assumptions used:

Fiscal year ended August	2012		2011		2010
Risk-free interest rate	1.54	%	1.98	%	2.97	%
Expected dividend yield	0.56	%	0.60	%	0.62	%
Expected life in years	7.39		7.32		7.39
Expected volatility	33.8	%	34.8	%	39.3	%

Schedule of Earnings Per Share, Basic, Two Class Method

The following table sets forth the computation of basic earnings per share using the two-class method for amounts attributable to the Company's shares of Common Stock and Class B Common Stock (in thousands, except per share data):

	August 25,		August 27,		August 28,
Year ended	2012		2011		2010
Net income available to shareholders	$	94,989	$	76,486	$	76,408
Allocation of net income for Basic:
Common Stock	$	74,643	$	59,944	$	59,921
Class B Common Stock		18,630		15,104		15,875
Unvested participating shares		1,716		1,438		612
	$	94,989	$	76,486	$	76,408
Weighted average number of shares for Basic:
Common Stock		14,882		14,791		14,570
Class B Common Stock		4,643		4,658		4,823
Unvested participating shares		391		405		171
		19,916		19,854		19,564
Earnings per share for Basic:
Common Stock	$	5.02	$	4.05	$	4.11
Class B Common Stock	$	4.01	$	3.24	$	3.29

Schedule of Earnings Per Share, Diluted, Two Class Method

For the years ended August 25, 2012, August 27, 2011 and August 28, 2010, the Company's diluted EPS assumes the conversion of all vested Class B Common Stock into Common Stock and uses the two-class method for its unvested participating shares as follows (in thousands, except per share data):

		Year Ended August 25, 2012					Year Ended August 27, 2011					Year Ended August 28, 2010
		Earnings					Earnings					Earnings
		to Common		Common			to Common		Common			to Common		Common
		shareholders		Shares	EPS		shareholders		Shares	EPS		shareholders		Shares	EPS
As reported - Basic	$	74,643		14,882	$ 5.02	$	59,944		14,791	$ 4.05	$	59,921		14,570	$ 4.11
Add: effect of dilutive potential common shares
Share-Based Awards		-		91			-		83			-		65
Class B Common Stock		18,630		4,643			15,104		4,658			15,875		4,823
Add: Undistributed earnings allocated to unvested participating shares		1,664		-			1,385		-			598		-
Less: Undistributed earnings reallocated to unvested participating shares		(1,579	)	-			(1,315	)	-			(567	)	-
Diluted EPS - Common Stock		93,358		19,616	$ 4.76		75,118		19,532	$ 3.85		75,827		19,458	$ 3.90