Goodwill and Other Intangible Assets (Carrying Amount in Goodwill by Segments) (Details) - USD ($) $ in Thousands	12 Months Ended
Aug. 31, 2019	Aug. 31, 2018
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 64,671	$ 77,131
Divestiture of businesses		(12,294)
Foreign currency translation	(284)	(166)
Goodwill, Ending Balance	64,387	64,671
Irrigation [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	48,591	60,978
Divestiture of businesses		(12,294)
Foreign currency translation	(24)	(93)
Goodwill, Ending Balance	48,567	48,591
Infrastructure [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	16,080	16,153
Foreign currency translation	(260)	(73)
Goodwill, Ending Balance	$ 15,820	$ 16,080

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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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-Section 50
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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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