Summary of Significant Accounting Policies (Tables)

12 Months Ended

Aug. 27, 2011

Summary of Significant Accounting Policies [Abstract]

Estimated Useful Lives of Property, Plant, and Equipment

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

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):

Year ended	August 27, 2011		August 28, 2010		August 29, 2009
Net income available to shareholders	$	76,486	$	76,408	$	75,852
Allocation of net income for Basic:
Common Stock	$	59,944	$	59,921	$	59,526
Class B Common Stock		15,104		15,875		16,326
Unvested participating shares		1,438		612		-
	$	76,486	$	76,408	$	75,852
Weighted average number of shares for Basic:
Common Stock		14,791		14,570		14,394
Class B Common Stock		4,658		4,823		4,935
Unvested participating shares		405		171		-
		19,854		19,564		19,329
Earnings per share for Basic:
Common Stock	$	4.05	$	4.11	$	4.14
Class B Common Stock	$	3.24	$	3.29	$	3.31

Schedule of Earnings Per Share, Diluted, Two Class Method

For the year ended August 27, 2011, 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):

	Earnings to Common shareholders			Common Shares		EPS
As reported - Basic	$	59,944			14,791	$	4.05
Add: effect of dilutive potential common shares
Common Stock options		-			83
Class B Common Stock		15,104			4,658
Add: Undistributed earnings allocated to unvested participating shares		1,385			-
Less: Undistributed earnings reallocated to unvested participating shares		(1,315	)		-
Diluted EPS – Common Stock	$	75,118			19,532	$	3.85

Share based awards that would result in the issuance of 116,487 shares of Common Stock were excluded from the calculation of diluted earnings per share for the year ended August 27, 2011 because they were anti-dilutive.

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

	Earnings to Common shareholders			Common Shares		EPS
As reported - Basic	$	59,921			14,570	$	4.11
Add: effect of dilutive potential common shares
Common Stock options		-			65
Class B Common Stock		15,875			4,823
Add: Undistributed earnings allocated to unvested participating shares		598			-
Less: Undistributed earnings reallocated to unvested participating shares		(567	)		-
Diluted EPS – Common Stock	$	75,827			19,458	$	3.90

Share based awards that would result in the issuance of 118,800 shares of Common Stock were excluded from the calculation of diluted earnings per share for the year ended August 28, 2010 because they were anti-dilutive.

For the year ended August 29, 2009, the Company's diluted EPS assumed the conversion of all vested Class B Common Stock into Common Stock and used the treasury stock method as follows (in thousands, except per share data):

	Year ended August 29, 2009
	Earnings to Common shareholders		Common Shares		EPS
As reported - Basic	$	59,526		14,394	$	4.14
Add: effect of dilutive potential common shares
Common Stock options		-		44
Class B Common Stock		16,326		4,935
Diluted EPS – Common Stock	$	75,852		19,373	$	3.92

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	2011			2010			2009
Risk-free interest rate		1.98	%		2.97	%		2.82	%
Expected dividend yield		0.60	%		0.62	%		0.76	%
Expected life in years		7.32			7.39			7.34
Expected volatility		34.8	%		39.3	%		38.6	%