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Note 4 - Property and Equipment, Net - Schedule of Property and Equipment (Details) - USD ($)
Oct. 31, 2021
Oct. 31, 2020
Property and equipment, gross $ 39,742,640 $ 39,992,706
Less accumulated amortization and depreciation (31,829,789) (31,180,843)
Property and equipment, net 7,912,851 8,811,863
Land [Member]    
Property and equipment, gross 3,148,834 3,148,834
Building and Building Improvements [Member]    
Property and equipment, gross 8,303,055 8,245,585
Machinery and Equipment [Member]    
Property and equipment, gross 27,214,996 27,476,894
Furniture and Fixtures [Member]    
Property and equipment, gross 904,256 904,256
Construction in Progress [Member]    
Property and equipment, gross $ 171,499 $ 217,137