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Note 4 - Property and Equipment, Net - Schedule of Property and Equipment (Details) - USD ($)
Oct. 31, 2017
Oct. 31, 2016
Property and equipment, gross $ 39,753,617 $ 39,546,687
Less accumulated amortization and depreciation (27,542,925) (26,147,529)
Property and equipment, net 12,210,692 13,399,158
Land [Member]    
Property and equipment, gross 3,148,834 3,144,068
Building and Building Improvements [Member]    
Property and equipment, gross 8,165,637 8,140,933
Machinery and Equipment [Member]    
Property and equipment, gross 25,817,318 25,769,804
Furniture and Fixtures [Member]    
Property and equipment, gross 894,237 903,067
Construction in Progress [Member]    
Property and equipment, gross $ 1,727,591 $ 1,588,815