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Note 11 - Business and Credit Concentrations, Major Customers and Geographic Information (Tables)
12 Months Ended
Oct. 31, 2015
Notes Tables  
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
   
Years ended October 31,
 
 
 
2015
 
 
2014
 
 
2013
 
United States
  $ 57,402,020     $ 65,457,787     $ 52,931,288  
Outside the United States
    16,166,718       17,519,945       22,334,750  
Total net sales
  $ 73,568,738     $ 82,977,732     $ 75,266,038