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Business Segments And Foreign Operations (Schedule Of Net Sales By Product Group) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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May 31, 2018 | May 31, 2017 | May 31, 2018 | May 31, 2017
Revenue from External Customer [Line Items] |  |  |  |
Net sales | $ 107,025 | $ 98,178 | $ 305,878 | $ 283,945
Maintenance Products [Member] |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Net sales | 98,839 | 88,926 | 279,188 | 255,856
Homecare And Cleaning Products [Member] |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Net sales | $ 8,186 | $ 9,252 | $ 26,690 | $ 28,089

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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) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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