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Note 15 - Concentration of Credit Risk (Details Textual) - USD ($)
Oct. 31, 2024
Oct. 31, 2023
Jan. 31, 2023
Jan. 01, 2023
Cash, Uninsured Amount $ 739,000   $ 2,237,000  
Restricted Cash 305,000 $ 305,000    
Cash Securing a Letter of Credit Issued as Security Deposit [Member]        
Restricted Cash     $ 305,000 $ 469,000
Closing of Signature Bank [Member] | Cash Securing a Letter of Credit Issued as Security Deposit [Member]        
Restricted Cash $ 305,000