Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Aug. 31, 2019	Aug. 25, 2018	Aug. 26, 2017
Revenues		$ 1,809,376	$ 1,696,489	$ 1,590,958
Operating expenses:
Cost of revenues	[1]	1,139,195	1,056,724	993,589
Selling and administrative expenses	[1]	334,840	360,727	342,407
Impairment charge				55,800
Depreciation and amortization		103,333	96,662	88,879
Total operating expenses		1,577,368	1,514,113	1,480,675
Operating income		232,008	182,376	110,283
Other (income) expense:
Interest income, net		(9,082)	(5,543)	(4,269)
Other expense (income), net		3,166	673	(571)
Total other income, net		(5,916)	(4,870)	(4,840)
Income before income taxes		237,924	187,246	115,123
Provision for income taxes		58,790	23,351	44,927
Net income		$ 179,134	$ 163,895	$ 70,196
Income per share—Diluted:
Common stock (in dollars per share)		$ 9.33	$ 8.21	$ 3.44
Income allocated to—Basic:
Common stock		$ 179,134	$ 163,895	$ 70,196
Income allocated to—Diluted:
Common Stock		$ 179,134	$ 163,895	$ 69,837
Weighted average number of shares outstanding—Basic:
Common stock (in shares)		19,082	19,811	20,284
Weighted average number of shares outstanding—Diluted:
Common stock (in shares)		19,196	19,963	20,276
Common Stock
Income per share—Basic:
Common stock (in dollars per share)		$ 9.77	$ 8.66	$ 3.63
Income allocated to—Basic:
Common stock		$ 150,247	$ 133,802	$ 55,903
Weighted average number of shares outstanding—Basic:
Common stock (in shares)		15,385	15,454	15,382
Class B Common Stock
Income per share—Basic:
Common stock (in dollars per share)		$ 7.81	$ 6.91	$ 2.91
Income allocated to—Basic:
Common stock		$ 28,887	$ 30,093	$ 13,915
Weighted average number of shares outstanding—Basic:
Common stock (in shares)		3,697	4,357	4,786

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