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Goodwill And Other Intangible Assets (Schedule Of Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Aug. 31, 2014 | Aug. 31, 2013
Finite And Indefinite Intangible Assets [Line Items] |  |
Amortizable intangible assets: weighted average years | 10 years | 10 years
Total, gross carrying amount | $ 53,189 | $ 53,274
Amortizable intangible assets: accumulated amortization | (21,209) | (17,267)
Tradenames [Member] |  |
Finite And Indefinite Intangible Assets [Line Items] |  |
Unamortizable intangible assets: gross carrying amount | 13,122 | 13,126
Patents [Member] |  |
Finite And Indefinite Intangible Assets [Line Items] |  |
Amortizable intangible assets: weighted average years | 13 years | 12 years 9 months 18 days
Amortizable intangible assets: gross carrying amount | 30,282 | 30,266
Amortizable intangible assets: accumulated amortization | (14,687) | (12,364)
Customer Relationships [Member] |  |
Finite And Indefinite Intangible Assets [Line Items] |  |
Amortizable intangible assets: weighted average years | 7 years 4 months 24 days | 7 years 4 months 24 days
Amortizable intangible assets: gross carrying amount | 7,932 | 8,034
Amortizable intangible assets: accumulated amortization | (5,304) | (4,238)
Non-compete Agreements [Member] |  |
Finite And Indefinite Intangible Assets [Line Items] |  |
Amortizable intangible assets: weighted average years | 5 years 7 months 6 days | 5 years 7 months 6 days
Amortizable intangible assets: gross carrying amount | 1,336 | 1,331
Amortizable intangible assets: accumulated amortization | (852) | (611)
Other Intangibles [Member] |  |
Finite And Indefinite Intangible Assets [Line Items] |  |
Amortizable intangible assets: weighted average years | 1 year 7 months 6 days | 1 year 8 months 12 days
Amortizable intangible assets: gross carrying amount | 517 | 517
Amortizable intangible assets: accumulated amortization | $ (366) | $ (54)

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- Definition Intangible Assets, Gross Carrying Amount + References No definition available. + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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