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Note 4 - Property and Equipment, Net - Schedule of Property and Equipment (Details) - USD ($)
Oct. 31, 2023
Oct. 31, 2022
Property and equipment, gross $ 38,741,003 $ 39,502,930
Less accumulated amortization and depreciation (31,601,387) (32,112,645)
Property and equipment, net 7,139,616 7,390,285
Land and Land Improvements [Member]    
Property and equipment, gross 3,148,834 3,148,834
Building and Building Improvements [Member]    
Property and equipment, gross 8,305,039 8,311,953
Machinery and Equipment [Member]    
Property and equipment, gross 26,185,346 26,909,968
Furniture and Fixtures [Member]    
Property and equipment, gross 902,012 902,012
Construction in Progress [Member]    
Property and equipment, gross $ 199,772 $ 230,163