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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, 2020	Aug. 31, 2019	Aug. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales		$ 408,498	$ 423,350	$ 408,518
Long-lived assets	[1]	60,759	45,076	36,357
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales		164,446	157,904	154,986
Long-lived assets	[1]	41,206	24,535	21,986
International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales		244,052	265,446	253,532
Long-lived assets	[1]	$ 19,553	$ 20,541	$ 14,371
[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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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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