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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, 2021 | Aug. 31, 2020 | Aug. 31, 2019
Property Plant And Equipment [Line Items] |  |  |
Depreciation | $ 5.6 | $ 5.5 | $ 4.9
Cost of goods sold, depreciation | $ 1.2 | $ 1.4 | $ 1.1
Minimum [Member] |  |  |
Property Plant And Equipment [Line Items] |  |  |
Estimated useful life | 3 years |  |
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] | R&D Lab Equipment And Office Equipment [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] |  |  |
Property Plant And Equipment [Line Items] |  |  |
Estimated useful life | 5 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] | R&D Lab Equipment And Office Equipment [Member] |  |  |
Property Plant And Equipment [Line Items] |  |  |
Property and equipment, useful life | 7 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 Amount of expense for allocation of cost of tangible asset over its useful life directly used in production of good and rendering of service. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -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 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(b)(2)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
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