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Gross Carrying Value and Accumulated Amortization of Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Aug. 31, 2021 | Aug. 31, 2020
Indefinite And Finite Lived Intangible Assets [Line Items] |  |
Finite-Lived Accumulated Amortization | $ 130,542 | $ 121,976
Net Book Value | 54,545 | 62,382
Intangible assets, gross | 185,087 | 184,358
Trade Names |  |
Indefinite And Finite Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | 24,835 | 24,863
Finite-Lived Accumulated Amortization | 0 | 0
Net Book Value | 24,835 | 24,863
Customer Relationships |  |
Indefinite And Finite Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | 142,453 | 141,853
Finite-Lived Accumulated Amortization | 114,463 | 106,491
Net Book Value | $ 27,990 | 35,362
Weighted Average Amortization Period | 14 years |
Patents |  |
Indefinite And Finite Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | $ 14,492 | 14,365
Finite-Lived Accumulated Amortization | 13,688 | 13,228
Net Book Value | $ 804 | 1,137
Weighted Average Amortization Period | 12 years |
Trademarks and Tradenames |  |
Indefinite And Finite Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | $ 3,307 | 3,277
Finite-Lived Accumulated Amortization | 2,391 | 2,257
Net Book Value | $ 916 | $ 1,020
Weighted Average Amortization Period | 12 years |

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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 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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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