XML 82 R60.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Commitments And Contingencies (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Aug. 31, 2017 | Aug. 31, 2016 | Aug. 31, 2015
Loss Contingencies [Line Items] |  |  |
Rent expense | $ 2.1 | $ 1.9 | $ 2.1
Purchase Commitment [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Commitment outstanding | 0.0 |  |
Indemnification Agreement 1 [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Liabilities related to indemnification agreement | 0.0 |  |
Senior Officers And Directors [Member] | Indemnification Agreement 1 [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Liabilities related to indemnification agreement | $ 0.0 |  |

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717 + Details
Name: | us-gaap_OperatingLeasesRentExpenseNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Liabilities related to indemnification agreement. + References No definition available. + Details
Name: | wdfc_LiabilitiesRelatedToIndemnificationAgreement
Namespace Prefix: | wdfc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Purchase commitments amount outstanding. + References No definition available. + Details
Name: | wdfc_PurchaseCommitmentsAmountOutstanding
Namespace Prefix: | wdfc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_PurchaseCommitmentExcludingLongtermCommitmentAxis=us-gaap_PurchaseCommitmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=us-gaap_IndemnificationGuaranteeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=wdfc_SeniorOfficersAndDirectorsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |