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Note 2 - Business Acquisition - Allocation of Estimated Purchase Price of Schroff Technologies International, Inc. (Details) - USD ($)
Oct. 31, 2023
Oct. 31, 2022
Mar. 01, 2022
Goodwill $ 8,085,000 $ 8,085,000  
Schrofftech [Member]      
Current assets     $ 6,620,000
Property and equipment     198,000
Intangible assets     13,840,000
Goodwill 1,100,000   5,617,000
Non-interest bearing liabilities     (1,800,000)
Net assets acquired at fair value $ 3,100,000   $ 24,475,000