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Note 3 - Inventories (Tables)
12 Months Ended
Oct. 31, 2017
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   
October 31,
 
   
2017
   
2016
 
Finished goods
  $
5,869,269
    $
4,657,779
 
Work in process
   
2,507,434
     
2,591,885
 
Raw materials
   
8,108,433
     
7,515,717
 
Production supplies
   
296,313
     
258,585
 
Total
  $
16,781,449
    $
15,023,966