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Inventories (Schedule Of Inventories) (Details) (USD $) In Thousands, unless otherwise specified	Feb. 28, 2015	Aug. 31, 2014
Inventories [Abstract]
Product held at third-party contract manufacturers	$ 4,472wdfc_InventoryProductHeldAtContractManufacturers	$ 3,945wdfc_InventoryProductHeldAtContractManufacturers
Raw materials and components	3,728us-gaap_InventoryRawMaterialsAndSupplies	3,670us-gaap_InventoryRawMaterialsAndSupplies
Work-in-process	368us-gaap_InventoryWorkInProcess	261us-gaap_InventoryWorkInProcess
Finished goods	26,109us-gaap_InventoryFinishedGoods	27,113us-gaap_InventoryFinishedGoods
Total	$ 34,677us-gaap_InventoryNet	$ 34,989us-gaap_InventoryNet

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 6

-Subparagraph a

-Article 5



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6(a)(1))

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 330

-SubTopic 10

-Section 35

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Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 6

-Subparagraph a

-Article 5



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-Publisher FASB

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Raw material and components held at outsourced contract manufacturers. The amounts receivable from the contract manufacturers as of the balance sheet date related to transfers of these raw materials and components by the Company to its contract manufacturers.

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