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Basis Of Presentation And Summary Of Significant Accounting Policies (Property And Equipment) (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Aug. 31, 2017 | Aug. 31, 2016 | Aug. 31, 2015
Property Plant And Equipment [Line Items] |  |  |
Depreciation | $ 3.9 | $ 3.5 | $ 3.4
Cost of goods sold, depreciation | $ 1.1 | $ 0.8 | $ 0.8
Minimum [Member] | Buildings And Improvements [Member] |  |  |
Property Plant And Equipment [Line Items] |  |  |
Property and equipment, useful life | 10 years |  |
Minimum [Member] | Machinery And Equipment [Member] |  |  |
Property Plant And Equipment [Line Items] |  |  |
Property and equipment, useful life | 3 years |  |
Minimum [Member] | Vehicles [Member] |  |  |
Property Plant And Equipment [Line Items] |  |  |
Property and equipment, useful life | 3 years |  |
Minimum [Member] | Furniture And Fixtures [Member] |  |  |
Property Plant And Equipment [Line Items] |  |  |
Property and equipment, useful life | 3 years |  |
Minimum [Member] | Software and Computer Equipment [Member] |  |  |
Property Plant And Equipment [Line Items] |  |  |
Property and equipment, useful life | 3 years |  |
Maximum [Member] | Buildings And Improvements [Member] |  |  |
Property Plant And Equipment [Line Items] |  |  |
Property and equipment, useful life | 40 years |  |
Maximum [Member] | Machinery And Equipment [Member] |  |  |
Property Plant And Equipment [Line Items] |  |  |
Property and equipment, useful life | 15 years |  |
Maximum [Member] | Vehicles [Member] |  |  |
Property Plant And Equipment [Line Items] |  |  |
Property and equipment, useful life | 5 years |  |
Maximum [Member] | Furniture And Fixtures [Member] |  |  |
Property Plant And Equipment [Line Items] |  |  |
Property and equipment, useful life | 10 years |  |
Maximum [Member] | Software and Computer Equipment [Member] |  |  |
Property Plant And Equipment [Line Items] |  |  |
Property and equipment, useful life | 5 years |  |

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- Definition The expense recognized in the current period that allocates the cost of a tangible asset over the asset's useful life. This element applies only to an asset used in the production of goods sold. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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