Quarterly report pursuant to Section 13 or 15(d)

Note 9 - Notes Payable (Details Textual)

v3.19.1
Note 9 - Notes Payable (Details Textual) - USD ($)
1 Months Ended 3 Months Ended
Nov. 30, 2018
Nov. 30, 2017
Mar. 31, 2017
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Jul. 31, 2012
Gain (Loss) on Extinguishment of Debt, Total       $ (4,265,434)    
Interest Expense, Debt, Total       4,000 44,000    
Notes Payable, Current, Total       198,798   $ 316,074  
Interest Expense Recorded Related to Amortization of Debt Discounts and Deferred Financing Costs       $ 0 42,000    
Common Stock [Member]              
Stock Issued During Period, Shares, New Issues       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       $ 42,000      
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       199,000   $ 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       $ 4,000 $ 2,000