Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Debentures and Notes Payable - Schedule of Debt (Details) (Parentheticals)

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Note 4 - Debentures and Notes Payable - Schedule of Debt (Details) (Parentheticals)
Sep. 30, 2018
Dec. 31, 2017
Apr. 26, 2016
Nov. 03, 2006
Interest rate     4.75%  
Six Point Zero Five Percent Insurance Premium Finance Agreement, Due July 2019 [Member]        
Interest rate 6.05% 6.05%    
Five Point Two Five Percent Insurance Premium Finance Agreement, Due June 2018 [Member]        
Interest rate 5.25% 5.25%    
Nine Percent Promissory Note Due June 2018 [Member]        
Interest rate 9.00% 9.00% 9.00%  
Four Point Seventy Five Percent Convertible Debenture Due June 2018 [Member]        
Interest rate 4.75% 4.75%   4.75%
Fourteen Percent Term Loan Due June 2018, One [Member]        
Interest rate 14.00% 14.00%    
Fourteen Percent Term Loan Due June 2018, Two [Member]        
Interest rate 14.00% 14.00%    
Fourteen Percent Term Loan Due June 2018, Three [Member]        
Interest rate 14.00% 14.00%    
Seven Percent Convertible Promissory Note Due March 2019 [Member]        
Interest rate 7.00% 7.00%    
Seven Percent Convertible Promissory Note Due June 2019 [Member]        
Interest rate 7.00% 7.00%