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Goodwill And Other Intangible Assets (Summary Of Definite-Lived Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified | Nov. 30, 2014 | Aug. 31, 2014
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Goodwill And Other Intangible Assets [Abstract] |  |
Gross carrying amount | $ 39,036 us-gaap_FiniteLivedIntangibleAssetsGross | $ 36,670 us-gaap_FiniteLivedIntangibleAssetsGross
Accumulated amortization | (12,524)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization | (12,021)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Accumulated impairment of intangible assets | (1,077)wdfc_FiniteLivedIntangibleAssetsAccumulatedImpairment | (1,077)wdfc_FiniteLivedIntangibleAssetsAccumulatedImpairment
Translation adjustments | (82)wdfc_FiniteLivedIntangibleAssetTranslationAdjustments | 99 wdfc_FiniteLivedIntangibleAssetTranslationAdjustments
Net carrying amount | $ 25,353 us-gaap_FiniteLivedIntangibleAssetsNet | $ 23,671 us-gaap_FiniteLivedIntangibleAssetsNet

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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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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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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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Namespace Prefix: | us-gaap_
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Balance Type: | debit
Period Type: | instant

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- Definition Amount after 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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Balance Type: | debit
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- Details
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Balance Type: | na
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- Definition Finite-Lived Intangible Assets, Accumulated Impairment + References No definition available. + Details
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Namespace Prefix: | wdfc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition The increase (decrease) to the recorded value of finite lived intangible assets for foreign currency translation adjustments. + References No definition available. + Details
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Namespace Prefix: | wdfc_
Data Type: | xbrli:monetaryItemType
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Period Type: | instant