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Note 11 - Line of Credit and PPP Loan (Details Textual) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
May 31, 2020
Nov. 30, 2019
Oct. 31, 2020
Oct. 31, 2019
Proceeds from Issuance of Long-term Debt, Total     $ 2,789
Paycheck Protection Program CARES Act [Member]        
Proceeds from Issuance of Long-term Debt, Total $ 2,800      
Revolving Credit Facility [Member]        
Line of Credit Facility, Maximum Borrowing Capacity   $ 5,000    
Long-term Line of Credit, Total     $ 0  
Revolving Credit Facility [Member] | LIBOR Daily Floating Rate [Member]        
Debt Instrument, Basis Spread on Variable Rate   2.00%