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Accounting Policies (Details) - Schedule of components of inventory (USD $) In Thousands, unless otherwise specified	Apr. 30, 2014	Jan. 31, 2014
Schedule of components of inventory [Abstract]
Ethanol and other finished goods	$ 2,385	$ 3,517
Work in process	3,115	3,017
Grain and other raw materials	13,693	12,836
Total	$ 19,193	$ 19,370

Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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