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Goodwill And Other Intangible Assets (Narrative) (Details) (USD $) | 3 Months Ended |
--- | --- | ---
Nov. 30, 2014 | Feb. 28, 2014 | Aug. 31, 2014
Finite Lived Intangible Assets [Line Items] |  |  |
Goodwill | $ 96,518,000 us-gaap_Goodwill |  | $ 95,499,000 us-gaap_Goodwill
GT 85 Limited [Member] |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |
Purchase consideration | 4,100,000 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = wdfc_Gt85LimitedMember |  |
Cash paid | 3,700,000 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = wdfc_Gt85LimitedMember |  |
Goodwill | 1,300,000 us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = wdfc_Gt85LimitedMember |  |
Goodwill expected to be deductible for tax purposes | 1,300,000 us-gaap_BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount / us-gaap_BusinessAcquisitionAxis = wdfc_Gt85LimitedMember |  |
Establissments Decloedt [Member] |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |
Cash paid |  | 1,800,000 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = wdfc_EstablissmentsDecloedtMember |
Customer-Related [Member] |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |
Purchase consideration | 1,700,000 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelatedIntangibleAssetsMember |  |
Estimated useful life | 8 years |  |
Trade Names [Member] |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |
Purchase consideration | 900,000 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TradeNamesMember |  |
Estimated useful life | 10 years |  |
Technology-Based [Member] |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |
Purchase consideration | $ 200,000 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TechnologyBasedIntangibleAssetsMember |  |
Estimated useful life | 4 years |  |
Customer Lists [Member] |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |
Estimated useful life | 5 years |  |

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- Definition The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479 + Details
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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479 + 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 after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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