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Note 5 - Inventory (Tables)
 3 Months Ended
Feb. 28, 2018
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   
February 28, 2018
    
November 30, 2017
  
Raw materials
   $
8,275,782
     $
8,731,985
  
Work in process
    
742,276
      
460,687
  
Finished goods
    
4,618,064
      
5,395,353
  
Gross inventory
   $
13,636,122
     $
14,588,025
  
Less: Reserves
    
(2,567,617
 )    
(2,621,303
 )
Net Inventory
   $
11,068,505
     $
11,966,722