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Inventories
6 Months Ended
Jul. 31, 2012
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]
4. Inventories:

Inventories consist of the following:

 

    July 31,     January 31,  
    2012     2012  
Raw materials   $ 18,335,643     $ 21,213,423  
Work-in-process     2,659,855       1,790,510  
Finished goods     22,023,716       22,664,422  
    $ 43,019,214     $ 45,668,355  

 

Inventories include freight-in, materials, labor and overhead costs and are stated at the lower of cost (on a first-in, first-out basis) or market.