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Note 4 - Property and Equipment, Net - Property, Plant and Equipment (Details) - USD ($)
Oct. 31, 2015
Oct. 31, 2014
Land [Member]    
Property and Equipment, gross $ 3,144,068 $ 3,144,068
Building and Building Improvements [Member]    
Property and Equipment, gross 8,127,015 8,120,110
Machinery and Equipment [Member]    
Property and Equipment, gross 25,081,678 23,664,060
Furniture and Fixtures [Member]    
Property and Equipment, gross 909,715 957,032
Construction in Progress [Member]    
Property and Equipment, gross 1,292,235 493,876
Property and Equipment, gross 38,554,711 36,379,146
Less accumulated amortization and depreciation (24,650,792) (23,265,701)
Property and equipment, net $ 13,903,919 $ 13,113,445