Annual report pursuant to Section 13 and 15(d)

Note 10 - Notes Payable (Details Textual)

v3.22.1
Note 10 - Notes Payable (Details Textual) - USD ($)
1 Months Ended 12 Months Ended
Feb. 23, 2021
May 18, 2020
Dec. 01, 2021
Nov. 30, 2020
Nov. 30, 2019
Dec. 31, 2021
Dec. 31, 2020
Nov. 30, 2021
Interest Expense, Debt, Total           $ 6,000 $ 6,000  
Notes Payable, Current, Total           453,427 745,443  
Proceeds from Notes Payable, Total           0 366,000  
Gain (Loss) on Extinguishment of Debt, Total           366,000 0  
Long-Term Debt, Maturity, Year One           453,000    
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)         8 months      
Debt Instrument, Periodic Payment, Total         $ 44,000      
Interest Expense, Debt, Total             5,000  
Notes Payable, Current, Total             379,000  
Notes Payable Issued for Prepayment of Insurance Premiums [Member] | IPFS [Member]                
Debt Instrument, Face Amount     $ 566,000 $ 442,000       $ 566,000
Debt Instrument, Interest Rate, Stated Percentage     4.36% 3.50%       4.36%
Debt Instrument, Term (Month)     5 months 7 months        
Debt Instrument, Periodic Payment, Total     $ 114,000 $ 64,000        
Interest Expense, Debt, Total           6,000 $ 1,000  
Notes Payable, Current, Total           $ 453,000    
Paycheck Protection Program CARES Act [Member]                
Proceeds from Notes Payable, Total   $ 366,000            
Gain (Loss) on Extinguishment of Debt, Total $ 366,000