Annual report pursuant to Section 13 and 15(d)

Note 11 - Notes Payable (Details Textual)

v3.21.1
Note 11 - Notes Payable (Details Textual) - USD ($)
1 Months Ended 12 Months Ended
Feb. 23, 2021
May 18, 2020
Nov. 30, 2020
Nov. 30, 2019
Nov. 30, 2018
Dec. 31, 2020
Dec. 31, 2019
Interest Expense, Debt, Total           $ 6,000 $ 8,000
Notes Payable, Current, Total           745,443 305,955
Proceeds from Notes Payable, Total           366,000
Long-Term Debt, Maturity, Year One           379,000  
Notes Payable Issued for Prepayment of Insurance Premiums [Member] | IPFS [Member]              
Debt Instrument, Face Amount     $ 442,000 $ 349,000 $ 393,000    
Debt Instrument, Interest Rate, Stated Percentage     3.50% 5.00% 5.10%    
Debt Instrument, Term (Month)         300 days    
Debt Instrument, Periodic Payment, Total     $ 64,000   $ 40,000    
Interest Expense, Debt, Total           1,000 6,000
Notes Payable, Current, Total           379,000  
Notes Payable Issued for Prepayment of Insurance Premiums [Member] | FIF [Member]              
Debt Instrument, Face Amount       $ 349,000      
Debt Instrument, Interest Rate, Stated Percentage       5.00%      
Debt Instrument, Term (Month)       240 days      
Debt Instrument, Periodic Payment, Total       $ 44,000      
Interest Expense, Debt, Total           $ 5,000 1,000
Notes Payable, Current, Total             $ 306,000
Paycheck Protection Program CARES Act [Member]              
Proceeds from Notes Payable, Total   $ 366,000          
Paycheck Protection Program CARES Act [Member] | Subsequent Event [Member]              
Forgiveness of Notes Payable $ 366,000