Consolidated Statements of Income (unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Feb. 23, 2013		Feb. 25, 2012		Feb. 23, 2013		Feb. 25, 2012
Revenues	$ 334,306		$ 309,959		$ 666,875		$ 622,984
Operating expenses:
Cost of revenues (1)	208,421	[1]	201,437	[1]	409,972	[1]	396,576	[1]
Selling and administrative expenses (1)	65,817	[1]	61,197	[1]	130,105	[1]	120,321	[1]
Depreciation and amortization	17,179		16,489		33,950		32,897
Total operating expenses	291,417		279,123		574,027		549,794
Income from operations	42,889		30,836		92,848		73,190
Other (income) expense:
Interest expense	400		555		860		1,128
Interest income	(924)		(749)		(1,691)		(1,380)
Exchange rate loss (gain)	198		(56)		38		571
Total other (income) expense	(326)		(250)		(793)		319
Income before income taxes	43,215		31,086		93,641		72,871
Provision for income taxes	16,573		11,890		36,239		27,873
Net income	26,642		19,196		57,402		44,998
Weighted average number of shares outstanding – Basic:
Common Stock (in Shares)	19,992		19,907		19,973		19,892
Common Class A [Member]
Other (income) expense:
Net income	20,963		15,081		45,155		35,341
Income per share – Basic:
Common Stock (in Dollars per share)	$ 1.40		$ 1.01		$ 3.02		$ 2.38
Income per share – Diluted:
Common Stock (in Dollars per share)	$ 1.33		$ 0.96		$ 2.86		$ 2.26
Income allocated to – Basic:
Common Stock	20,963		15,081		45,155		35,341
Income allocated to – Diluted:
Common Stock	26,196		18,863		56,440		44,213
Weighted average number of shares outstanding – Basic:
Common Stock (in Shares)	14,962		14,873		14,943		14,856
Weighted average number of shares outstanding – Diluted:
Common Stock (in Shares)	19,747		19,605		19,714		19,575
Dividends per share:
Dividends per share (in Dollars per share)	$ 0.0375		$ 0.0375		$ 0.0750		$ 0.0750
Common Class B [Member]
Other (income) expense:
Net income	5,209		3,765		11,233		8,832
Income per share – Basic:
Common Stock (in Dollars per share)	$ 1.12		$ 0.81		$ 2.42		$ 1.90
Income allocated to – Basic:
Common Stock	$ 5,209		$ 3,765		$ 11,233		$ 8,832
Weighted average number of shares outstanding – Basic:
Common Stock (in Shares)	4,647		4,640		4,647		4,640
Dividends per share:
Dividends per share (in Dollars per share)	$ 0.0300		$ 0.0300		$ 0.0600		$ 0.0600

[1] Exclusive of depreciation on the Company's property, plant and equipment and amortization of its intangible assets.