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v2.4.1.9

Debt (Details) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Nov. 30, 2014 | Aug. 31, 2013 | Aug. 31, 2012 | Aug. 31, 2011
Debt Instrument [Line Items] |  |  |  |
Revolving credit facility, amount |  | $ 125,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity |  | $ 75,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Revolving credit facility, maturity period |  | 5 years |  | 3 years
Revolving credit facility, expiration date |  | Jan. 07, 2018 |  | Jun. 17, 2014
LIBOR margin rate |  | 0.85%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 | 0.90%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 |
Commitment fee annual rate |  | 0.85%us-gaap_LineOfCreditFacilityCommitmentFeePercentage | 0.90%us-gaap_LineOfCreditFacilityCommitmentFeePercentage |
Commitment fee, annual rate applied to amount not borrowed |  | 0.12%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage | 0.15%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage |
Outstanding loans and letters of credit maximum amount | 62,500,000 wdfc_OutstandingLoansAndLettersOfCreditMaximumAmount |  |  |
Proceeds from revolving credit facility | 0 us-gaap_ProceedsFromLinesOfCredit |  |  |
Revolving credit facility, amount outstanding | 98,000,000 us-gaap_LineOfCreditFacilityAmountOutstanding |  |  |
Minimum [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Consolidated earnings before interest, income taxes, depreciation and amortization | $ 40,000,000 wdfc_ConsolidatedEarningsBeforeInterestIncomeTaxesDepreciationAndAmortization / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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Balance Type: | na
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- Details
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- Definition Amount borrowed under the credit facility as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

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- Definition Date the credit facility terminates, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
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- Definition Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph f -Article 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition Consolidated earnings before interest, income taxes, depreciation and amortization. + References No definition available. + Details
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- Definition Line of credit facility, maturity period. + References No definition available. + Details
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- Definition Outstanding loans and letters of credit maximum amount. + References No definition available. + Details
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