Income Taxes (Significant Components Of Deferred Tax Liabilities) (Details) (USD $) In Thousands	Aug. 31, 2011	Aug. 31, 2010
Income Taxes [Abstract]
Purchased intangible assets, including acquired technology	$ 3,712	$ 3,731
Total deferred tax liabilities (non-current)	$ 3,712	$ 3,731

The cumulative amount of the estimated future tax effects attributable to the difference between the tax basis of intangible assets and the basis of intangible assets computed in accordance with generally accepted accounting principles. The difference in basis, whether due to amortization or other reasons, will increase future taxable income when such difference reverses. Intangible assets include, but are not limited to, assets such as patents, trademarks and customer lists.

Represents the noncurrent portion of deferred tax liabilities, which result from applying the applicable tax rate to net taxable temporary differences pertaining to each jurisdiction to which the entity is obligated to pay income tax. A noncurrent taxable temporary difference is a difference between the tax basis and the carrying amount of a noncurrent asset or liability in the financial statements prepared in accordance with generally accepted accounting principles. In a classified statement of financial position, an enterprise separates deferred tax liabilities and assets into a current amount and a noncurrent amount. Deferred tax liabilities and assets are classified as current or noncurrent based on the classification of the related asset or liability for financial reporting. A deferred tax liability or asset that is not related to an asset or liability for financial reporting, including deferred tax assets related to carryforwards, are classified according to the expected reversal date of the temporary difference.

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