Quarterly report pursuant to Section 13 or 15(d)

Note 9 - Notes Payable (Details Textual)

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Note 9 - Notes Payable (Details Textual) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended
Nov. 30, 2018
Nov. 30, 2017
Mar. 31, 2017
Jun. 30, 2019
Mar. 31, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Jul. 31, 2012
Gain (Loss) on Extinguishment of Debt, Total         $ (4,265,434)    
Interest Expense, Debt, Total       2,000   45,000 6,000 89,000    
Notes Payable, Current, Total       80,024     80,024   $ 316,074  
Interest Expense Compounded       $ 0   $ 43,000 0 85,000    
Common Stock [Member]                    
Stock Issued During Period, Shares, New Issues       8,000,000 17,857          
Former Chief Executive Officer and President [Member] | Common Stock [Member]                    
Stock Issued During Period, Shares, New Issues 925,000                  
Platinum Loan Agreement [Member]                    
Line of Credit Facility, Maximum Borrowing Capacity                   $ 50,000,000
Interest Expense, Debt, Excluding Amortization               85,000    
Platinum Loan Agreement [Member] | Former Chief Executive Officer and President [Member]                    
Debt Conversion, Original Debt, Amount $ 2,200,000                  
Gain (Loss) on Extinguishment of Debt, Total $ (1,000,000)                  
Platinum Loan Agreement [Member] | Former Chief Executive Officer and President [Member] | Common Stock [Member]                    
Debt Conversion, Converted Instrument, Shares Issued 817,857                  
Debt Conversion, Converted Instrument, Amount $ 3,200,000                  
Platinum Loan Agreement [Member] | PPCO [Member]                    
Repayments of Debt     $ 7,700,000              
Notes Payable Issued for Prepayment of Insurance Premiums [Member]                    
Notes Payable, Current, Total       $ 80,000     80,000   $ 316,000  
Notes Payable Issued for Prepayment of Insurance Premiums [Member] | IPFS [Member]                    
Debt Instrument, Face Amount $ 393,000 $ 396,000                
Debt Instrument, Interest Rate, Stated Percentage 5.10% 4.00%                
Debt Instrument, Term 300 days 300 days                
Debt Instrument, Periodic Payment, Total $ 40,000 $ 40,000                
Interest Expense, Debt, Total             $ 6,000 $ 4,000