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Property and Equipment (Tables)
6 Months Ended
Jul. 31, 2012
Property and Equipment [Abstract]  
Summary of property and equipment
                 
    July 31,
2012
    January 31,
2012
 

Land

  $ 360,000     $ —    

Building and leasehold improvements

    1,816,000       208,000  

Machinery and equipment

    3,069,000       2,700,000  

Trucks and other vehicles

    1,669,000       1,817,000  

Construction project costs (variable interest entities)

    2,985,000       1,469,000  
   

 

 

   

 

 

 
      9,899,000       6,194,000  

Less – accumulated depreciation

    3,630,000       3,433,000  
   

 

 

   

 

 

 

Property and equipment, net

  $ 6,269,000     $ 2,761,000