Derivative Financial Instruments (Details) - Schedule of Fair Values for Derivative Financial Instruments - USD ($) $ in Thousands		Apr. 30, 2016	Apr. 30, 2015
Commodity Contract [Member]
Derivative Financial Instruments (Details) - Schedule of Fair Values for Derivative Financial Instruments [Line Items]
Asset Derivatives, Fair Value	[1]	$ 93	$ 8
Liability Derivatives, Fair Value	[1]
Forward Contracts [Member]
Derivative Financial Instruments (Details) - Schedule of Fair Values for Derivative Financial Instruments [Line Items]
Asset Derivatives, Fair Value	[2]
Liability Derivatives, Fair Value	[2]	$ 3

[1] Commodity futures are included in other prepaid expense and other current assets. These futures contracts are for approximately 2.5 million bushels of corn at April 30, 2016 and approximately 35,000 bushels of corn at April 30, 2015.

[2] Forward purchase contracts are included in accrued expenses and other current liabilities. These contracts are for purchases of approximately 0.6 million bushels of corn.