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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
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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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(14)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -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=119400593&loc=d3e572229-122910 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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