Note 10 - Convertible Notes and Warrants (Details) (USD $)	1 Months Ended	3 Months Ended		12 Months Ended			1 Months Ended		9 Months Ended								2 Months Ended	3 Months Ended										0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended						3 Months Ended		1 Months Ended	3 Months Ended				3 Months Ended		1 Months Ended	3 Months Ended			1 Months Ended	3 Months Ended			3 Months Ended	0 Months Ended
	Feb. 22, 2013	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Jan. 16, 2013	Dec. 31, 2012	Feb. 22, 2013 Securities Purchase Agreement [Member] Warrants 2011 and 2012 [Member]	Feb. 22, 2013 February 2013 Amendment and Waiver Agreement [Member] Warrants 2011 and 2012 [Member]	Sep. 18, 2013 February 2013 Amendment and Waiver Agreement [Member] Warrants 2011 and 2012 [Member]	Sep. 18, 2013 February 2013 Amendment and Waiver Agreement [Member]	Feb. 22, 2011 Expiration Date Februrary 22, 2016 [Member] 2011 Warrants [Member]	Jul. 02, 2012 2012 $0.15 Warrants [Member] 2012 Warrants [Member]	Jul. 02, 2012 2012 $0.25 Warrants [Member] 2012 Warrants [Member]	Feb. 22, 2013 2012 $0.098 Warrants [Member] 2012 Warrants [Member]	Feb. 22, 2011 First Tranche [Member] Convertible Notes [Member]	Feb. 22, 2011 Second Tranche [Member] 2012 Convertible Notes [Member]	Feb. 22, 2013 2011 Warrants [Member]	Mar. 31, 2014 2011 Warrants [Member]	Dec. 31, 2013 2011 Warrants [Member]	Mar. 31, 2013 2011 Warrants [Member]	Jan. 16, 2013 2011 Warrants [Member]	Dec. 31, 2012 2011 Warrants [Member]	Feb. 22, 2011 2011 Warrants [Member]	Mar. 31, 2014 2012 $0.15 Warrants [Member]	Dec. 31, 2013 2012 $0.15 Warrants [Member]	Jul. 02, 2012 2012 $0.15 Warrants [Member]	Jul. 02, 2012 2012 $0.25 Warrants [Member]	Jan. 16, 2013 Third Tranche Warrants [Member]	Mar. 31, 2014 Third Tranche Warrants [Member]	Jul. 02, 2012 2012 Warrants [Member]	Mar. 31, 2014 2012 Warrants [Member]	Dec. 31, 2013 2012 Warrants [Member]	Mar. 31, 2013 2012 Warrants [Member]	Feb. 22, 2013 2012 Warrants [Member]	Jan. 16, 2013 2012 Warrants [Member]	Dec. 31, 2012 2012 Warrants [Member]	Mar. 31, 2014 2012 Convertible Notes [Member]	Dec. 31, 2013 2012 Convertible Notes [Member]	Feb. 22, 2013 2011 Convertible Notes [Member]	Mar. 31, 2014 2011 Convertible Notes [Member]	Sep. 18, 2012 2011 Convertible Notes [Member]	Dec. 31, 2011 2011 Convertible Notes [Member]	Feb. 22, 2011 2011 Convertible Notes [Member]	Mar. 31, 2014 Convertible Notes [Member]	Feb. 22, 2011 Convertible Notes [Member]	Feb. 22, 2013 2012 Convertible Notes [Member]	Mar. 31, 2014 2012 Convertible Notes [Member]	Sep. 18, 2013 2012 Convertible Notes [Member]	Dec. 31, 2012 2012 Convertible Notes [Member]	Feb. 22, 2013 Third Tranche Convertible Notes [Member]	Mar. 31, 2014 Third Tranche Convertible Notes [Member]	Sep. 18, 2013 Third Tranche Convertible Notes [Member]	Jan. 16, 2013 Third Tranche Convertible Notes [Member]	Mar. 31, 2014 2011 Warrants [Member]	Jan. 16, 2013 Third Tranche Warrants [Member]
Note 10 - Convertible Notes and Warrants (Details) [Line Items]
Debt Instrument, Interest Rate, Stated Percentage																																											5.00%				5.00%				5.00%		5.00%
Debt Instrument, Face Amount		$ 250,000																																									$ 4,000,000
Class of Warrant or Right, Outstanding (in Shares)																		17,940,780	17,940,780				40,000,000	7,065,255	7,065,255
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)								0.098			0.15	0.15	0.25	0.098			0.098	0.098	0.098				0.15	0.098	0.098	0.15	0.25	0.15
Debt Instrument Additional Debt Funding from Investors															1,000,000	1,000,000																											2,000,000
Number of Tranches																																													2
Amount of additional debt funding available in each separate tranche																																													1,000,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares)											40,000,000	10,000,000	10,000,000	16,315,790												10,000,000	10,000,000	2,500,000		20,000,000
Convertible Debt		4,494,355																																																			250,000
Class of Warrant or Right Exercise Period of Warrants or Rights																												5 years		5 years
Class of Warrant or Right Number of Shares Exercisable Under Warrants (in Shares)							50,000,000	81,578,946
Class of Warrant or Right Volume Weighted Average Price of Warrants or Rights (in Dollars per share)								$ 0.155	$ 0.3705
Class Of Warrant Or Right Number Of Securities Called By Warrants Or Rights Under Forfeiture (in Shares)								12,500,000
Debt Instrument Relinquishment of Right to Purchase Amount, Maximum								750,000
Debt Instrument, Convertible, Conversion Price (in Dollars per share)										$ 0.06																														$ 0.06							$ 0.06				$ 0.06
Interest Payable		144,000		206,000
Debt Instrument Period Considered in Year for Calculation of Interest																																								360 days
Long Term Debt Percentage of Outstanding Principal Amount Redeemed under Change of Control																																												130.00%
Long Term Debt Percentage of Accrued and Unpaid Interest																																												100.00%
Class of Warrant or Right Warrants Issued (in Shares)																	65,263,156
Payment to Warrant Holders as Percentage of Exercise Price																		30.00%
Class of Warrant or Right Period for Presenting Effective Registration Statement for Avoiding Cashless Exercise of Warrants or Rights																														5 years
Change in Fair Value of Convertible Notes and Warrants, Percentage		10.00%
Gains (Losses) on Extinguishment of Debt			(1,283,000)	(1,283,000)														(1,916,000)											108,000								18,000			(200,000)							(120,000)				(47,000)
Long-term Debt, Gross																																													3,208,000				417,000				142,000
Debt Instrument, Unamortized Discount																																										792,000							583,000				108,000
Convertible Debt, Fair Value Disclosures																																							6,070,000											386,000
Amortization of Debt Discount (Premium)	95,000		95,000																																				38,000							55,000				2,000
Write-off of Debt Discount																																							265,000							462,000				106,000
Financial and Nonfinancial Liabilities, Fair Value Disclosure	17,490,000	8,595,000	21,963,000	7,217,000	12,592,000	11,898,000											3,916,000	358,000	179,000	5,086,000	2,000,000	2,000,000						300,000			159,000	141,000	1,958,000	1,632,000	1,800,000	1,800,000					4,920,000					1,516,000		1,390,000				361,000
Derivative Liability, Fair Value, Gross Liability																		358,000										300,000										159,000		3,490,000							1,130,000				284,000		394,000	844,000
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings		179,000
Change in Fair Value of Warrant Liabilities		(1,011,000)	(3,999,000)															2,014,000
(in Shares)																															168,000																							8,749,999
Common Stock Shares Issued Upon Conversion of Warrants (in Shares)																															326,000																							3,217,741
Proceeds from Convertible Debt																																																							$ 108,000