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SEGMENT REPORTING (Tables) | 12 Months Ended
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Jan. 31, 2014
Segment Reporting [Abstract] |
Schedule of Segment Reporting Information Profit Loss And Revenue Percentage [Table Text Block] | Amounts below include corporate activities that are not separately reportable and income from synthetic fuel investments (amounts in thousands):
|  | Years Ended January 31, |
|  | 2014 |  |  | 2013 |  |  | 2012 |
Net sales and revenues: |  |  |  |  |  |  |  |  |  |  |  |
Alternative energy |  | $ | 665,625 |  |  | $ | 656,167 |  |  | $ | 408,635 |
Real estate |  |  | 466 |  |  |  | 472 |  |  |  | 244 |
Total net sales and revenues |  | $ | 666,091 |  |  | $ | 656,639 |  |  | $ | 408,879 |
Segment gross profit (loss): |  |  |  |  |  |  |  |  |  |  |  |
Alternative energy |  | $ | 64,261 |  |  | $ | 13,830 |  |  | $ | 35,179 |
Real estate |  |  | (110 | ) |  |  | (228 | ) |  |  | (348 | )
Total gross profit |  | $ | 64,151 |  |  | $ | 13,602 |  |  | $ | 34,831 |
Segment profit (loss): |  |  |  |  |  |  |  |  |  |  |  |
Alternative energy segment profit (loss) |  | $ | 63,228 |  |  | $ | (1,027 | ) |  | $ | 48,580 |
Real estate segment loss |  |  | (358 | ) |  |  | (497 | ) |  |  | (603 | )
Corporate expenses, net |  |  | (3,100 | ) |  |  | (2,298 | ) |  |  | (2,048 | )
Income from synthetic fuel investments |  |  | — |  |  |  | — |  |  |  | 2,883 |
Income (loss) from continuing operations before income taxes |  | $ | 59,770 |  |  | $ | (3,822 | ) |  | $ | 48,812 |
Sales of products alternative energy segment: |  |  |  |  |  |  |  |  |  |  |  |
Ethanol |  |  | 75 | % |  |  | 76 | % |  |  | 82 | %
Dried distillers grains |  |  | 19 | % |  |  | 18 | % |  |  | 17 | %
Modified distillers grains |  |  | 3 | % |  |  | 4 | % |  |  | 1 | %
Other |  |  | 3 | % |  |  | 2 | % |  |  | — | %
Total |  |  | 100 | % |  |  | 100 | % |  |  | 100 | %
Sales of services real estate segment: |  |  |  |  |  |  |  |  |  |  |  |
Leasing |  |  | 100 | % |  |  | 100 | % |  |  | 100 | %
|  | Years Ended January 31, |
|  | 2014 |  |  | 2013 |  |  | 2012 |
Interest income: |  |  |  |  |  |  |  |  |  |  |  |
Alternative energy |  | $ | 62 |  |  | $ | 37 |  |  | $ | 48 |
Real estate |  |  | — |  |  |  | — |  |  |  | — |
Corporate and other |  |  | 74 |  |  |  | 87 |  |  |  | 319 |
Total interest income |  | $ | 136 |  |  | $ | 124 |  |  | $ | 367 |
Depreciation and amortization expense: |  |  |  |  |  |  |  |  |  |  |  |
Alternative energy |  | $ | 16,914 |  |  | $ | 16,073 |  |  | $ | 11,653 |
Real estate |  |  | 131 |  |  |  | 137 |  |  |  | 103 |
Corporate and other |  |  | — |  |  |  | — |  |  |  | — |
Total depreciation and amortization expense |  | $ | 17,045 |  |  | $ | 16,210 |  |  | $ | 11,756 |
Equity in income of unconsolidated affiliates: |  |  |  |  |  |  |  |  |  |  |  |
Alternative energy |  | $ | 17,175 |  |  | $ | 627 |  |  | $ | 21,532 |
Real estate |  |  | — |  |  |  | — |  |  |  | — |
Total equity in income of unconsolidated affiliates |  | $ | 17,175 |  |  | $ | 627 |  |  | $ | 21,532 |
Additions to property and equipment: |  |  |  |  |  |  |  |  |  |  |  |
Alternative energy |  | $ | 3,374 |  |  | $ | 2,802 |  |  | $ | 7,276 |
Real estate |  |  | — |  |  |  | — |  |  |  | 66 |
Corporate and other |  |  | 394 |  |  |  | — |  |  |  | — |
Total additions to property and equipment |  | $ | 3,768 |  |  | $ | 2,802 |  |  | $ | 7,342 |
Schedule of Segment Reporting Information Assets [Table Text Block] |
|  | January 31, |
|  | 2014 |  |  | 2013 |  |  | 2012 |
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Alternative energy |  | $ | 356,589 |  |  | $ | 337,857 |  |  | $ | 367,029 |
Real estate |  |  | 4,722 |  |  |  | 13,326 |  |  |  | 17,458 |
Corporate and other |  |  | 66,557 |  |  |  | 54,147 |  |  |  | 53,562 |
Total assets |  | $ | 427,868 |  |  | $ | 405,330 |  |  | $ | 438,049 |
Additions to other long lived assets: |  |  |  |  |  |  |  |  |  |  |  |
Alternative energy |  | $ | 1,030 |  |  | $ | 645 |  |  | $ | 2,624 |
Real estate |  |  | — |  |  |  | — |  |  |  | — |
Total additions to other long lived assets |  | $ | 1,030 |  |  | $ | 645 |  |  | $ | 2,624 |
Current and long term debt: |  |  |  |  |  |  |  |  |  |  |  |
Alternative energy |  | $ | 75,726 |  |  | $ | 106,309 |  |  | $ | 122,678 |
Corporate and other |  |  | — |  |  |  | 620 |  |  |  | 1,071 |
Total long term debt |  | $ | 75,726 |  |  | $ | 106,929 |  |  | $ | 123,749 |

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