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LONG-TERM DEBT AND INTEREST RATE SWAPS (Details) (USD $) | 12 Months Ended | 24 Months Ended |  | 12 Months Ended |  | 12 Months Ended |  |  |  |  |  | 12 Months Ended |  | 12 Months Ended |  |  | 3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended |  |  | 12 Months Ended
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Jan. 31, 2014 | Jan. 31, 2014 | Jan. 31, 2013 | Jan. 31, 2014 Interest Rate Swap One [Member] One Earth Energy [Member] | Jul. 31, 2009 Interest Rate Swap One [Member] One Earth Energy [Member] | Jan. 31, 2014 Interest Rate Swap Two [Member] One Earth Energy [Member] | Jul. 31, 2009 Interest Rate Swap Two [Member] One Earth Energy [Member] | Jan. 31, 2014 Interest Rate Swap [Member] One Earth Energy [Member] | Jan. 31, 2013 Interest Rate Swap [Member] One Earth Energy [Member] | Jan. 31, 2014 Interest Rate Swap [Member] | Jan. 31, 2013 Interest Rate Swap [Member] | Jan. 31, 2014 One Earth Energy [Member] Term Loan [Member] | Jan. 31, 2013 One Earth Energy [Member] Term Loan [Member] | Jan. 31, 2014 One Earth Energy [Member] Revolving Credit Facility [Member] | Jan. 31, 2014 One Earth Energy [Member] | Jan. 31, 2014 One Earth Energy [Member] Maximum [Member] Term Loan [Member] | Jan. 31, 2014 One Earth Energy [Member] Minimum [Member] Term Loan [Member] | Jan. 31, 2013 One Earth Energy [Member] Minimum [Member] Term Loan [Member] | Jan. 31, 2012 Nu Gen Energy [Member] Term Loan [Member] | Jan. 31, 2014 Nu Gen Energy [Member] Term Loan [Member] | Jan. 31, 2012 Nu Gen Energy [Member] Revolving Credit Facility [Member] | Jan. 31, 2014 Nu Gen Energy [Member] Revolving Credit Facility [Member] | Jan. 31, 2012 Nu Gen Energy [Member] | Jan. 31, 2014 Nu Gen Energy [Member] | Jan. 31, 2013 Nu Gen Energy [Member] | Jan. 31, 2014 Nu Gen Energy [Member] Minimum [Member]
LONG-TERM DEBT AND INTEREST RATE SWAPS (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum |  | 3.15% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum |  | 8.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term Debt, Maturities, Repayment Terms | range up to five years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term Debt, Fair Value | $ 75,100,000 | $ 75,100,000 | $ 107,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term Debt, Percentage Bearing Fixed Interest, Amount | 44,101,000 | 44,101,000 | 620,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  | 7.90% |  | 5.49% |  |  |  |  |  |  |  | 2.65% |  | 3.00% |  |  |  | 3.25% |  |  |  |  |  |
Debt Instrument, Interest Rate at Period End |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.20% |  |  |  |  |  |  |  |
Long term debt, quarterly principle payments |  |  |  |  |  |  |  |  |  |  |  | 2,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed Charge Coverage Ratio |  |  |  |  |  |  |  |  |  |  |  | 20.00% |  |  |  |  |  |  |  |  |  |  |  |  |  | 40.00%
Long-term Debt, Excess Cash Flow Principle Payments, Maximum, Annual |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,000,000 |  |  |  |  |  |  |  |  |
Long-term Debt, Excess Cash Flow Principle Payments, Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 18,000,000 |  |  |  |  |  |  |  |  |  |
Long-term Debt, Gross |  |  |  |  |  |  |  |  |  |  |  | 39,100,000 | 58,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Maturity Date |  |  |  |  |  |  |  |  |  |  |  |  |  | Jul. 31, 2014 |  |  |  |  |  | Oct. 31, 2016 |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Description of Variable Rate Basis |  |  |  |  |  |  |  |  |  |  |  | no outstanding borrowings on the $10,000,000 revolving loan, which bears interest at LIBOR plus 300 basis points |  | LIBOR plus 265 basis points |  |  |  |  |  | LIBOR plus 325 basis points |  |  |  |  |  |
Payments of Financing Costs |  |  |  |  |  |  |  |  |  |  |  | 1,400,000 |  |  |  |  |  |  |  | 600,000 |  |  |  |  |  |
Amount of Restricted Net Assets for Consolidated and Unconsolidated Subsidiaries |  |  |  |  |  |  |  |  |  |  |  | 86,900,000 |  |  |  |  |  |  |  | 66,100,000 |  |  |  |  |  |
Derivative Liability, Notional Amount | 33,400,000 | 33,400,000 |  |  | 50,000,000 |  | 25,000,000 |  |  | 33,444,000 | 37,811,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Swap Termination Date |  |  |  | July 8, 2014 |  | July 31, 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative Liability | 1,141,000 | 1,141,000 | 2,789,000 |  |  |  |  | 1,100,000 | 2,800,000 | 1,141,000 | 2,789,000 |  |  |  |  |  |  |  |  |  |  |  |  | 36,600,000 | 48,100,000 |
Proceeds from Bank Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 55,000,000 |  | 10,000,000 | 10,000,000 | 65,000,000 |  |  |
Debt Instrument Libor Floor Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.00% |  |  |  |  |  |
Debt Instrument, Frequency of Periodic Payment |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 19 quarterly payments |  |  |  |  |  |  |  |  |  |  |
Long Term Debt Principal Portion Amortization Schedule |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 120 months |  |  |  |  |  |
Line of Credit Facility, Amount Outstanding | $ 0.0375 | $ 0.0375 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 300 |  |  |  |
Restricted Investments, Percent of Net Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 73.30% |  |
Restricted Investments Percentage of Net Assets Including Only Consolidated Subsidiaries |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 54.80% |  |

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- Definition Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13495-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=20225523&loc=SL20225862-175312 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=28370219&loc=SL20226008-175313 + Details
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