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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
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%