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COMMITMENTS (Details) (USD $) | 12 Months Ended
--- | ---
Jan. 31, 2014 | Jan. 31, 2013 | Jan. 31, 2012
COMMITMENTS (Details) [Line Items] |  |  |
Operating Leases, Future Minimum Payments Due | $ 1,030,000 |  |
Natural Gas Pipeline [Member] | One Earth Energy [Member] |  |  |
COMMITMENTS (Details) [Line Items] |  |  |
Lease Expiration Period | 10 years |  |
Operating Leases, Future Minimum Payments Due | 4,380,000 |  |
Number of installments payable | 120 |  |
Installment amount | 36,500 |  |
Operating Leases, Rent Expense, Net | 438,000 | 438,000 | 438,000
Railcars One [Member] | One Earth Energy [Member] |  |  |
COMMITMENTS (Details) [Line Items] |  |  |
Operating Leases, Rent Expense, Net | 2,055,000 | 1,723,000 | 1,193,000
Lease Expiration Date | May 31, 2022 |  |
RailCars [Member] | Nu Gen Energy [Member] |  |  |
COMMITMENTS (Details) [Line Items] |  |  |
Operating Leases, Rent Expense, Net | 4,350,000 | 2,714,000 | 482,000
One Earth Energy And Nu Gen Energy [Member] |  |  |
COMMITMENTS (Details) [Line Items] |  |  |
Quantity of Bushels under Forward Purchase Contract (in US Bushels) | 9,700,000 |  |
Quantity of Ethanol under Sales Commitment (in US Gallons) | 51,600,000 |  |
Quantity of Distillers Grains Under Sales Commitment (in US Tons) | 164,000 |  |
Quantity of Non-food Grade Corn Oil Under Sales Commitments (in Pounds) | 5,400,000 |  |
One Earth Energy [Member] |  |  |
COMMITMENTS (Details) [Line Items] |  |  |
Marketing Expense | 640,000 | 627,000 | 627,000
Percentage of Grain Purchase Under Agreement | 100.00% | 100.00% | 100.00%
Expiration Date of Grain Agreement | Oct. 31, 2014 |  |
Maximum Period to Notify Other Party for Grain Agreement Period Extension | 180 months |  |
Nu Gen Energy [Member] |  |  |
COMMITMENTS (Details) [Line Items] |  |  |
Marketing Expense | $ 838,000 | $ 833,000 | $ 897,000

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