Acquisitions (Schedule Of Pro Forma Results Of Operations) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Nov. 30, 2011	Nov. 30, 2010
Acquisitions [Abstract]
Net sales, As reported	$ 392,799	$ 318,412
Net sales, Pro forma	392,799	405,339
Net earnings from continuing operations, As reported	37,174	26,661
Net earnings from continuing operations, Pro forma	$ 37,323	$ 29,942
Basic earnings per share from continuing operations, As reported	$ 0.54	$ 0.39
Basic earnings per share from continuing operations, Pro forma	$ 0.55	$ 0.44
Diluted earnings per share from continuing operations, As reported	$ 0.50	$ 0.36
Diluted earnings per share from continuing operations, Pro forma	$ 0.50	$ 0.41

The pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect per basic share of common stock for a period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect, per diluted share of common stock for a period as if the business combination or combinations had been completed at the beginning of a period.

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- Definition

This element represents the income or loss from continuing operations attributable to the parent which may also be defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests, if any.

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- Definition

The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period.

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- Definition

The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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