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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, 2013 | Aug. 31, 2012
Finite And Indefinite Intangible Assets [Line Items] |  |
Amortizable intangible assets: weighted average years | 10 years |
Total, gross carrying amount | $ 53,274 | $ 39,573
Amortizable intangible assets: accumulated amortization | (17,267) | (14,503)
Tradenames [Member] |  |
Finite And Indefinite Intangible Assets [Line Items] |  |
Unamortizable intangible assets: gross carrying amount | 13,126 | 6,575
Patents [Member] |  |
Finite And Indefinite Intangible Assets [Line Items] |  |
Amortizable intangible assets: weighted average years | 12 years 9 months 18 days | 12 years 8 months 12 days
Amortizable intangible assets: gross carrying amount | 30,266 | 25,637
Amortizable intangible assets: accumulated amortization | (12,364) | (10,458)
Customer Relationships [Member] |  |
Finite And Indefinite Intangible Assets [Line Items] |  |
Amortizable intangible assets: weighted average years | 7 years 4 months 24 days | 8 years 4 months 24 days
Amortizable intangible assets: gross carrying amount | 8,034 | 6,313
Amortizable intangible assets: accumulated amortization | (4,238) | (3,477)
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 6 months
Amortizable intangible assets: gross carrying amount | 1,331 | 846
Amortizable intangible assets: accumulated amortization | (611) | (478)
Other Intangibles [Member] |  |
Finite And Indefinite Intangible Assets [Line Items] |  |
Amortizable intangible assets: weighted average years | 1 year 8 months 12 days | 10 years
Amortizable intangible assets: gross carrying amount | 517 | 202
Amortizable intangible assets: accumulated amortization | $ (54) | $ (90)

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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=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + 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=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + 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 Carrying amount of assets (excluding financial assets) that lack physical substance, excluding goodwill, 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=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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