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INVESTMENTS AND DEPOSITS (Tables) | 12 Months Ended
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Jan. 31, 2013
Schedule of Equity Method Investments [Table Text Block] | The following table summarizes equity method investments at January 31, 2013 and 2012 (amounts in thousands):
Entity |  | Ownership Percentage |  |  | Carrying Amount January 31, 2013 |  |  | Carrying Amount January 31, 2012 |
Big River Resources, LLC |  |  | 10 | % |  | $ | 32,438 |  |  | $ | 34,370 |
Patriot Holdings, LLC |  |  | 27 | % |  |  | 27,521 |  |  |  | 27,309 |
Total Equity Method Investments |  |  |  |  |  | $ | 59,959 |  |  | $ | 61,679 |
Schedule of Condensed Balance Sheet [Table Text Block] | Summarized financial information for each of the Company’s equity method investees, as of their fiscal year end is presented in the following table (amounts in thousands):
As of December 31, 2012 |  |  |  |  |  |
|  | Patriot |  |  | Big River |
Current assets |  | $ | 22,302 |  |  | $ | 139,879 |
Non current assets |  |  | 161,319 |  |  |  | 375,803 |
Total assets |  | $ | 183,621 |  |  | $ | 515,682 |
Current liabilities |  | $ | 20,201 |  |  | $ | 90,865 |
Long-term liabilities |  |  | 65,867 |  |  |  | 87,301 |
Total liabilities |  | $ | 86,068 |  |  | $ | 178,166 |
Noncontrolling interests |  | $ | — |  |  | $ | 29,007 |
As of December 31, 2011 |  |  |  |  |  |  |  |
|  | Patriot |  |  | Big River |
Current assets |  | $ | 24,972 |  |  | $ | 139,858 |
Non current assets |  |  | 168,518 |  |  |  | 406,522 |
Total assets |  | $ | 193,490 |  |  | $ | 546,380 |
Current liabilities |  | $ | 20,966 |  |  | $ | 72,798 |
Long-term liabilities |  |  | 76,103 |  |  |  | 111,928 |
Total liabilities |  | $ | 97,069 |  |  | $ | 184,726 |
Noncontrolling interests |  | $ | — |  |  | $ | 33,224 |
Schedule of Financial Information for Equity Method Investments [Table Text Block] | The summarized information for NuGen is presented for the ten months ended October 31, 2011 and for the six months ended December 31, 2010 (amounts in thousands):
Year Ended December 31, 2012 |  |  |  |  |  |
|  | Patriot |  |  | Big River |  | Nugen |
Net sales and revenue |  | $ | 365,302 |  |  | $ | 1,135,956 |  |  | — |
Gross profit |  | $ | 7,685 |  |  | $ | 20,651 |  |  | — |
Income from continuing operations |  | $ | 1,320 |  |  | $ | 2,799 |  |  | — |
Net income |  | $ | 1,320 |  |  | $ | 2,799 |  |  | — |
Year Ended December 31, 2011 and Period from January 1, 2011 through October 31, 2011 (NuGen)
|  | Patriot |  |  | Big River |  |  | Nugen |
Net sales and revenue |  | $ | 377,250 |  |  | $ | 1,162,308 |  |  | $ | 256,973 |
Gross profit |  | $ | 29,207 |  |  | $ | 105,207 |  |  | $ | 24,490 |
Income from continuing operations |  | $ | 22,615 |  |  | $ | 71,384 |  |  | $ | 18,133 |
Net income |  | $ | 22,615 |  |  | $ | 71,384 |  |  | $ | 18,133 |
Year Ended December 31, 2010 and Period from July 1, 2010 through December 31, 2010 (NuGen)
|  | Patriot |  |  | Big River |  |  | Nugen |
Net sales and revenue |  | $ | 261,117 |  |  | $ | 742,163 |  |  | $ | 121,871 |
Gross profit |  | $ | 26,936 |  |  | $ | 83,671 |  |  | $ | 12,977 |
Income from continuing operations |  | $ | 21,385 |  |  | $ | 52,478 |  |  | $ | 9,772 |
Net income |  | $ | 21,385 |  |  | $ | 52,478 |  |  | $ | 9,772 |

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- Definition Tabular disclosure of equity method investments in common stock. The disclosure may include: (a) the name of each investee or group of investments for which combined disclosure is appropriate, (2) the percentage ownership of common stock, (3) the difference, if any, between the carrying amount of an investment and the value of the underlying equity in the net assets and the accounting treatment of difference, if any, and (4) the aggregate value of each identified investment based on its quoted market price, if available. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 18 -Paragraph 20 -Subparagraph a, b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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