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Note 4 - Inventory
3 Months Ended
May 31, 2012
Inventory Disclosure [Text Block]
(4)
Inventory

Major classes of inventory are:

   
May 31, 2012
   
November 30, 2011
 
Raw materials
  $ 10,042,113     $ 7,623,095  
Work in process
    299,324       394,158  
Finished goods
    7,148,475       7,982,192  
    $ 17,489,912     $ 15,999,445  
Less: Reserves
    (2,778,351 )     (2,750,340 )
    $ 14,711,561     $ 13,249,105