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Goodwill And Other Intangible Assets (Carrying Amount In Goodwill By Segments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2015	Aug. 31, 2014
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 37,021	$ 37,414
Foreign currency translation	(1,099)	10
Goodwill, Ending Balance	76,801	37,021
Claude Laval Corp [Member]
Goodwill [Line Items]
Finalization of Claude Laval Corp acquisition		(403)
Elecsys [Member]
Goodwill [Line Items]
Acquisition	39,986
SPF Water Engineering [Member]
Goodwill [Line Items]
Acquisition	893
Irrigation [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	20,293	20,667
Foreign currency translation	(267)	29
Goodwill, Ending Balance	60,905	20,293
Irrigation [Member] | Claude Laval Corp [Member]
Goodwill [Line Items]
Finalization of Claude Laval Corp acquisition		(403)
Irrigation [Member] | Elecsys [Member]
Goodwill [Line Items]
Acquisition	39,986
Irrigation [Member] | SPF Water Engineering [Member]
Goodwill [Line Items]
Acquisition	893
Infrastructure [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	16,728	16,747
Foreign currency translation	(832)	(19)
Goodwill, Ending Balance	$ 15,896	$ 16,728

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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