Income Taxes (Schedule Of Earnings Before Income Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Aug. 31, 2017	May 31, 2017	Feb. 28, 2017	Nov. 30, 2016	Aug. 31, 2016	May 31, 2016	Feb. 29, 2016	Nov. 30, 2015	Aug. 31, 2017	Aug. 31, 2016	Aug. 31, 2015
Income Taxes [Abstract]
United States									$ 21,969	$ 17,805	$ 49,668
Foreign									13,746	11,483	(2,917)
Earnings before income taxes	$ 10,547	$ 16,197	$ 7,636	$ 1,335	$ 11,020	$ 14,065	$ (6,193)	$ 10,396	$ 35,715	$ 29,288	$ 46,751

The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

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.(h)(1)(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

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Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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