Carolina Starches Acquisition - Purchase Price Allocation to Assets Acquired and Liabilities Assumed (Detail) (USD $) In Thousands, unless otherwise specified	Aug. 31, 2013	Aug. 31, 2012
Business Acquisition [Line Items]
Goodwill	$ 7,978	$ 7,978
Carolina Starches, LLC [Member]
Business Acquisition [Line Items]
Property, plant and equipment	3,947
Working capital	4,225
Other assets	141
Intangible assets	290
Goodwill	81
Non-current liabilities	(184)
Total purchase price	$ 8,500

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The amount of property, plant, and equipment recognized as of the acquisition date.

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