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Note 4 - Property and Equipment, Net - Schedule of Property and Equipment (Details) - USD ($)
Oct. 31, 2020
Oct. 31, 2019
Property and equipment, gross $ 39,992,706 $ 40,027,245
Less accumulated amortization and depreciation (31,180,843) (30,017,022)
Property and equipment, net 8,811,863 10,010,223
Land [Member]    
Property and equipment, gross 3,148,834 3,148,834
Building and Building Improvements [Member]    
Property and equipment, gross 8,245,585 8,245,585
Machinery and Equipment [Member]    
Property and equipment, gross 27,476,894 27,474,099
Furniture and Fixtures [Member]    
Property and equipment, gross 904,256 904,256
Construction in Progress [Member]    
Property and equipment, gross $ 217,137 $ 254,471