Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Aug. 31, 2013		Aug. 25, 2012		Aug. 27, 2011
Revenues	$ 1,355,515		$ 1,256,289		$ 1,134,126
Operating expenses:
Cost of revenues (1)	836,174	[1]	797,944	[1]	712,309	[1]
Selling and administrative expenses (1)	263,531	[1]	240,798	[1]	233,111	[1]
Depreciation and amortization	69,607		66,439		64,733
Total operating expenses	1,169,312		1,105,181		1,010,153
Income from operations	186,203		151,108		123,973
Other (income) expense:
Interest expense	1,651		2,132		6,738
Interest income	(3,201)		(2,738)		(2,552)
Foreign exchange loss (gain)	144		980		(785)
Total other (income) expense	(1,406)		374		3,401
Income before income taxes	187,609		150,734		120,572
Provision for income taxes	70,924		55,745		44,086
Net income	116,685		94,989		76,486
Income allocated to – Basic:
Income per share – Diluted	116,685		94,989		76,486
Common Class A [Member]
Income per share – Basic:
Income per share – Basic (in Dollars per share)	$ 6.14		$ 5.02		$ 4.05
Income per share – Diluted:
Common Stock (in Dollars per share)	$ 5.81		$ 4.76		$ 3.85
Income allocated to – Basic:
Income per share – Diluted	91,916		74,643		59,944
Income allocated to – Diluted:
Common Stock	114,927		93,358		75,118
Weighted average number of shares outstanding – Basic:
Income allocated to – Basic (in Shares)	14,975		14,882		14,791
Weighted average number of shares outstanding – Diluted:
Common Stock (in Shares)	19,789		19,616		19,532
Dividends per share:
Income allocated to – Diluted (in Dollars per share)	$ 0.15		$ 0.15		$ 0.15
Common Class B [Member]
Income per share – Basic:
Income per share – Basic (in Dollars per share)	$ 4.91		$ 4.01		$ 3.24
Income allocated to – Basic:
Income per share – Diluted	$ 22,913		$ 18,630		$ 15,104
Weighted average number of shares outstanding – Basic:
Income allocated to – Basic (in Shares)	4,666		4,643		4,658
Dividends per share:
Income allocated to – Diluted (in Dollars per share)	$ 0.12		$ 0.12		$ 0.12

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