Quarterly report pursuant to Section 13 or 15(d)

Note 8 - Notes Payable (Details Textual)

v3.20.1
Note 8 - Notes Payable (Details Textual)
1 Months Ended 3 Months Ended
Nov. 30, 2019
USD ($)
Nov. 30, 2018
USD ($)
Mar. 31, 2020
USD ($)
Mar. 31, 2019
USD ($)
Dec. 31, 2019
USD ($)
May 31, 2015
Interest Expense, Debt, Total     $ 3,000 $ 4,000    
Notes Payable, Current, Total     175,919   $ 305,955  
Notes Payable Issued for Prepayment of Insurance Premiums [Member] | IPFS [Member]            
Debt Instrument, Face Amount   $ 393,000        
Debt Instrument, Interest Rate, Stated Percentage   5.10%        
Debt Instrument, Term (Month)   300 days        
Debt Instrument, Periodic Payment, Total   $ 40,000        
Interest Expense, Debt, Total       $ 4,000    
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     3,000      
Notes Payable, Current, Total     $ 176,000   $ 306,000  
CRG [Member] | Term Loan Agreement [Member]            
Debt Instrument, Number of Quarterly Payments           8