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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Other Assets Schedule of Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	May 31, 2017	Aug. 31, 2017	Aug. 31, 2016	Aug. 31, 2015
Goodwill [Line Items]
Goodwill		$ 154,055	$ 160,414	$ 150,115
Goodwill, Acquired During Period			9,774
Goodwill, Translation Adjustments		121	1,220
Goodwill, Impairment Loss	$ (5,500)	(5,542)
Goodwill, Other Increase (Decrease)		938
Goodwill, Written off Related to Sale of Business Unit			(695)
Energy [Member]
Goodwill [Line Items]
Goodwill		552	552	552
Goodwill, Acquired During Period			0
Goodwill, Translation Adjustments		0	0
Goodwill, Impairment Loss		0
Goodwill, Other Increase (Decrease)		0
Ag [Member]
Goodwill [Line Items]
Goodwill		142,929	148,916	142,665
Goodwill, Acquired During Period			5,726
Goodwill, Translation Adjustments		121	1,220
Goodwill, Impairment Loss		(5,542)
Goodwill, Other Increase (Decrease)		566
Goodwill, Written off Related to Sale of Business Unit			(695)
Corporate and Other [Member]
Goodwill [Line Items]
Goodwill		10,574	10,946	$ 6,898
Goodwill, Acquired During Period			4,048
Goodwill, Translation Adjustments		0	0
Goodwill, Impairment Loss		0
Goodwill, Other Increase (Decrease)		$ (372)
Goodwill, Written off Related to Sale of Business Unit			$ 0