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Business Segments And Foreign Operations (Net Sales And Long-Lived Assets By Geographical Area) (Details) - USD ($) $ in Thousands		12 Months Ended
		Aug. 31, 2018	Aug. 31, 2017	Aug. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales		$ 408,518	$ 380,506	$ 380,670
Long-lived assets	[1]	36,357	29,439	11,545
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales		154,986	150,086	158,139
Long-lived assets	[1]	21,986	23,346	6,419
International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales		253,532	230,420	222,531
Long-lived assets	[1]	$ 14,371	$ 6,093	$ 5,126
[1] Includes tangible assets and property and equipment, net, attributed to the geographic location in which such assets are located.

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- Definition

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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