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Note 6 - Inventory (Tables)
 6 Months Ended
May 31, 2021
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   
May 31, 2021
    
November 30, 2020
  
Raw materials
   $
8,737,075
     $
7,086,367
  
Work in process
    
280,389
      
304,009
  
Finished goods
    
3,841,124
      
3,777,136
  
Total Gross Inventory
   $
12,858,588
     $
11,167,512
  
Less: Reserves
    
(3,862,327
 )    
(3,405,112
 )
Net Inventory
   $
8,996,261
     $
7,762,400