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Note 6 - Inventory (Tables)
3 Months Ended
Feb. 28, 2019
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   
February 28, 201
9
   
November 30, 2018
 
Raw materials
  $
7,751,489
    $
7,825,278
 
Work in process
   
419,070
     
272,302
 
Finished goods
   
4,896,854
     
5,051,330
 
Gross inventory
  $
13,067,413
    $
13,148,910
 
Less: Reserves
   
(2,858,728
)    
(2,891,808
)
Net Inventory
  $
10,208,685
    $
10,257,102