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 9 Months Ended
Nov. 30, 2018
Nov. 30, 2017
Mar. 31, 2017
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Jul. 31, 2012
Gain (Loss) on Extinguishment of Debt, Total           $ (4,265,434)    
Interest Expense, Debt, Total       1,000     45,000 6,000 134,000    
Notes Payable, Current, Total       0       0   $ 316,074  
Interest Expense Compounded       0     $ 44,000 0 129,000    
IPFS [Member]                      
Debt Instrument, Face Amount   $ 396,000                  
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               129,000      
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       $ 0       0   $ 316,000  
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% 4.00%                  
Debt Instrument, Term 300 days 300 days                  
Debt Instrument, Periodic Payment, Total $ 40,000 $ 40,000                  
Interest Expense, Debt, Total               $ 6,000 $ 5,000