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Note 6 - Long-term Debt and Notes Payable to Bank (Details Textual) - USD ($)
6 Months Ended 11 Months Ended 12 Months Ended
Jul. 24, 2020
Apr. 30, 2021
Sep. 29, 2020
Oct. 31, 2020
Paycheck Protection Program CARES Act [Member]        
Proceeds from Issuance of Unsecured Debt       $ 4,981,400
Interest Payable   $ 51,998    
Debt Instrument, Periodic Payment, Total     $ 560,000  
Pinnacle Financial Partners [Member] | Revolving Credit Facility [Member]        
Long-term Line of Credit, Total   5,900,000   5,000,000.0
Line of Credit Facility, Remaining Borrowing Capacity   $ 2,500,000   $ 1,600,000
North Mill Capital LLC [Member] | Revolving Credit Facility [Member]        
Line of Credit Facility, Percent of Eligible Accounts 85.00%      
Line of Credit Facility, Percent of Eligible Inventory 35.00%      
Line of Credit Facility, Additional Capacity for Advances $ 5,000,000      
Line of Credit Facility, Restricted Capacity for Advances 1,500,000      
Line of Credit Facility, Maximum Borrowing Capacity $ 18,000,000      
Debt Instrument, Interest Rate, Effective Percentage 4.75% 4.75%    
Debt Instrument, Term (Year) 3 years      
Debt Instrument, Term Extensions (Year) 1 year      
North Mill Capital LLC [Member] | Revolving Credit Facility [Member] | Maximum [Member]        
Debt Instrument, Interest Rate, Effective Percentage 6.00%      
North Mill Capital LLC [Member] | Revolving Credit Facility [Member] | Prime Rate [Member]        
Debt Instrument, Basis Spread on Variable Rate 1.50% 1.50%    
Virginia Real Estate Loan and North Carolina Real Estate Loan [Member] | Pinnacle Financial Partners [Member]        
Debt Instrument, Interest Rate, Stated Percentage   3.95%