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Note 4 - Property and Equipment, Net - Schedule of Property and Equipment (Details) - USD ($)
Oct. 31, 2022
Oct. 31, 2021
Property and equipment, gross $ 39,502,930 $ 39,742,640
Less accumulated amortization and depreciation (32,112,645) (31,829,789)
Property and equipment, net 7,390,285 7,912,851
Land [Member]    
Property and equipment, gross 3,148,834 3,148,834
Building and Building Improvements [Member]    
Property and equipment, gross 8,311,953 8,303,055
Machinery and Equipment [Member]    
Property and equipment, gross 26,909,968 27,214,996
Furniture and Fixtures [Member]    
Property and equipment, gross 902,012 904,256
Construction in Progress [Member]    
Property and equipment, gross $ 230,163 $ 171,499