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Variable Interest Entities (Tables)
3 Months Ended
Apr. 30, 2013
Variable Interest Entities [Abstract]  
Condensed consolidated balance sheets related to consolidated VIEs
                 
    April 30,
2013
    January 31,
2013
 

Cash and cash equivalents

  $ 278,000     $ 190,000  

Property, plant and equipment

    3,248,000       5,309,000  
   

 

 

   

 

 

 

Total assets

  $ 3,526,000     $ 5,499,000  
   

 

 

   

 

 

 

Accounts payable

  $ 208,000     $ 334,000  

Accrued expenses

    365,000       747,000  
   

 

 

   

 

 

 

Total liabilities

  $ 573,000     $ 1,081,000