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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, 2017	Aug. 31, 2016	Aug. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales		$ 380,506	$ 380,670	$ 378,150
Long-lived assets	[1]	29,439	11,545	11,376
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales		150,086	158,139	153,116
Long-lived assets	[1]	23,346	6,419	5,955
International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales		230,420	222,531	225,034
Long-lived assets	[1]	$ 6,093	$ 5,126	$ 5,421
[1] Includes tangible assets and property and equipment, net, attributed to the geographic location in which such assets are located.

X

- 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(13))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(8))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
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