Note 11 - Related Party Transactions (Details Textual)								1 Months Ended		12 Months Ended
	Nov. 19, 2015 USD ($) $ / shares shares	May 01, 2015 USD ($)	Jan. 31, 2015 USD ($) $ / shares shares	Jan. 01, 2014 USD ($) $ / shares shares	Mar. 18, 2013 USD ($)	Dec. 31, 2009 USD ($) shares	Dec. 16, 2008 USD ($) $ / shares shares	Sep. 30, 2009 USD ($) $ / shares shares	Aug. 29, 2008 USD ($) $ / shares shares	Dec. 31, 2016 USD ($) $ / shares	Dec. 31, 2015 USD ($) $ / shares shares	Jun. 30, 2016 USD ($)	Feb. 29, 2016 USD ($) $ / shares shares	Nov. 23, 2015 USD ($)	Oct. 15, 2015 USD ($)	Apr. 30, 2015 USD ($)	Apr. 01, 2015 USD ($)	Feb. 03, 2015 USD ($)	Dec. 18, 2013 USD ($)	Feb. 22, 2013 USD ($)	Oct. 16, 2012 USD ($) shares	Jun. 30, 2008 USD ($)	Feb. 29, 2008 USD ($)
Debt Instrument, Interest Rate, Stated Percentage					2.00%
Convertible Notes Payable										$ 0	$ 0
Debt Conversion, Converted Instrument, Amount										$ 0	$ 1,915,000
Class of Warrant or Right Cancelled During the Period | shares											29,363,517
Debt Instrument, Convertible, Number of Equity Instruments										15,490,000
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares
Line of Credit Facility, Maximum Borrowing Capacity					$ 2,000,000													$ 5,000,000	$ 4,000,000
Long-term Line of Credit										$ 2,700,000
Line of Credit Facility, Interest Rate at Period End										2.75%
Interest Expense, Related Party										$ 918,189	$ 2,434,101
The Northern Trust Company [Member]
Line of Credit Facility, Maximum Borrowing Capacity					$ 2,000,000													$ 5,000,000	$ 4,000,000
Line of Credit Facility, Interest Rate During Period					2.00%
Long-term Line of Credit										$ 2,700,000
Line of Credit Facility, Interest Rate at Period End										2.75%
Director Mr. Wit [Member]
Class of Warrant or Right Cancelled During the Period | shares	1,900,000
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares	$ 0.25
Stock Issued During Period Converted Cancelled Debt and Cancelled Warrants Shares | shares	37,023,517
Warrants Cancelled | shares	29,363,517
Interest Expense, Related Party Approximately Monthly Amount					$ 9,500
Chief Executive Officer [Member]
Notes Payable, Related Parties													$ 450,000
Debt Instrument, Interest Rate, Stated Percentage													12.00%
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares													1,800,000
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares													$ 0.25
Interest Payable													$ 450,000
12% Promissory Notes [Member] | Chairman and Chief Technology Officer [Member]
Debt Instrument, Interest Rate, Stated Percentage																	12.00%
Matures On April 1, 2017 [Member] | Director Mr. Wit [Member]
Class of Warrant or Right Cancelled During the Period | shares	11,440,000
12% Promissory Notes [Member] | Director Mr. Wit [Member]
Debt Instrument, Interest Rate, Stated Percentage	12.00%
Extinguishment of Debt, Amount	$ 6,919,000
12% Promissory Notes [Member] | Chairman and Chief Technology Officer [Member]
Notes Payable, Related Parties																	$ 20,000
Convertible Debentures [Member] | Chief Operating Officer [Member]
Debt Instrument, Interest Rate, Stated Percentage																12.00%
Convertible Notes Payable																$ 25,000
Convertible Debentures [Member] | Director Mr. Wit [Member]
Convertible Notes Payable																						$ 510,000
Due to Related Parties										$ 5,825,000
Debt Conversion, Converted Instrument, Amount									$ 510,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares	5,760,000
Convertible Debentures [Member] | Chairman and Chief Technology Officer [Member]
Debt Instrument, Interest Rate, Stated Percentage		12.00%
Related Party Transaction, Amounts of Transaction		$ 5,000
Promissory Notes [Member] | CEO And Director [Member]
Notes Payable, Related Parties										$ 450,000
Convertible Debenture Initiated In June 2008 [Member] | Director Mr. Wit [Member]
Debt Instrument, Interest Rate, Stated Percentage									10.00%
Convertible Notes Payable			$ 1,770,000					$ 1,770,000	$ 1,260,000			$ 1,770,000								$ 1,770,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares									3,540,000
Debt Instrument, Convertible, Conversion Price | $ / shares									$ 0.50
Convertible Debenture Initiated In February 2008 [Member] | Director Mr. Wit [Member]
Notes Payable, Related Parties																							$ 150,000
Convertible Notes Payable			4,475,000					$ 4,350,000												$ 4,475,000	$ 125,000		$ 4,200,000
Debt Conversion, Converted Instrument, Amount							$ 4,350,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares	1,680,000						8,700,000														250,000
Debt Instrument, Convertible, Conversion Price | $ / shares							$ 0.50
Debt Conversion, Converted Instrument, Rate							12.00%
Extinguishment of Debt, Amount	$ 420,000
Class of Warrant or Right Cancelled During the Period | shares	1,680,000
Convertible Debenture Initiated In February 2008 [Member] | Director Mr. Wit [Member] | Extended Maturity Debentures [Member]
Convertible Notes Payable												$ 4,055,000
Aggregated Convertible Debt July - September 30, 2009 [Member]
Stock Issued During Period Converted Cancelled Debt and Cancelled Warrants Shares | shares	1,900,000
Aggregated Convertible Debt July - September 30, 2009 [Member] | Director Mr. Wit [Member]
Debt Instrument, Interest Rate, Stated Percentage								12.00%
Convertible Notes Payable			1,100,000					$ 1,100,000
Debt Conversion, Converted Instrument, Amount	$ 475,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares	1,900,000							4,400,000
Extinguishment of Debt, Amount	$ 475,000
Class of Warrant or Right Cancelled During the Period | shares	1,900,000
Debt Instrument, Convertible, Number of Equity Instruments								4,400,000
Warrants and Rights Outstanding								$ 4,400,000
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares								$ 0.25
Warrants Extension of Maturity								2 years
Stock Issued During Period Converted Cancelled Debt and Cancelled Warrants Shares | shares	5,760,000
Notes Payable Related Parties Amount Transfered														$ 625,000
Aggregated Convertible Debt October - December 31, 2009 [Member] | Director Mr. Wit [Member]
Debt Instrument, Interest Rate, Stated Percentage						12.00%
Convertible Notes Payable			1,440,000			$ 1,440,000
Debt Conversion, Converted Instrument, Amount	$ 1,440,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares						5,760,000
Extinguishment of Debt, Amount	$ 1,440,000
Class of Warrant or Right Cancelled During the Period | shares	5,760,000
Warrants Extension of Maturity						2 years
Matures On April 1, 2017 [Member] | Accrued Interest [Member]
Extinguishment of Debt, Amount				$ 980,000
Matures On April 1, 2017 [Member] | Director Mr. Wit [Member]
Notes Payable, Related Parties			2,860,000	$ 980,000											$ 980,000
Debt Instrument, Interest Rate, Stated Percentage				12.00%											12.00%
Related Party Transaction, Amounts of Transaction			6,879
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares				3,920,000
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares				$ 0.25
Stock Issued During Period Converted Cancelled Debt and Cancelled Warrants Shares | shares	11,440,000
Matures on January 1, 2019 [Member] | Director Mr. Wit [Member]
Debt Instrument, Interest Rate, Stated Percentage															12.00%
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares	3,920,000
Matures on April 1, 2019 [Member] | Director Mr. Wit [Member]
Notes Payable, Related Parties															$ 2,860,000
Matures On April 1, 2017 II [Member] | Director Mr. Wit [Member]
Notes Payable, Related Parties			$ 529,000
Matures On April 1, 2017 II [Member] | Director Mr. Wit [Member] | Notes Payable, Other Payables [Member]
Debt Instrument, Interest Rate, Stated Percentage			12.00%
Matures On January 1, 2019 II [Member] | Director Mr. Wit [Member]
Notes Payable, Related Parties															$ 529,000
Debt Instrument, Interest Rate, Stated Percentage															12.00%
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares	2,116,000
Matures On April 1, 2017 III [Member] | Director Mr. Wit [Member]
Notes Payable, Related Parties			$ 950,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares			3,800,000
Extinguishment of Debt, Amount			$ 280,000
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares			$ 0.25
Matures On April 1, 2017 III [Member] | Director Mr. Wit [Member] | Accrued Interest [Member]
Extinguishment of Debt, Amount			$ 670,000
Matures On January 1, 2019 IV [Member] | Director Mr. Wit [Member]
Notes Payable, Related Parties															$ 950,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares	3,800,000
Matures On January 1, 2019 III [Member] | Director Mr. Wit [Member]
Debt Instrument, Interest Rate, Stated Percentage															12.00%
12% Percent Convertible Notes Payable [Member] | Director Mr. Wit [Member]
Debt Instrument, Interest Rate, Stated Percentage	12.00%
Debt Conversion, Converted Instrument, Amount	$ 1,915,000
Debt Instrument, Convertible, Conversion Price | $ / shares	$ 0.25
Extinguishment of Debt, Amount	$ 420,000