Note 9 - Convertible Notes and Warrant Liabilities (Details) (USD $)	1 Months Ended	12 Months Ended					1 Months Ended		9 Months Ended		2 Months Ended	12 Months Ended						1 Months Ended	12 Months Ended					0 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended					12 Months Ended				1 Months Ended	12 Months Ended					12 Months Ended		1 Months Ended	12 Months Ended			1 Months Ended	12 Months Ended				12 Months Ended		6 Months Ended
	Feb. 22, 2013	Dec. 31, 2013	Dec. 31, 2012	Sep. 18, 2013	Jan. 16, 2013	Dec. 31, 2011	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, 2013 2011 Warrants [Member]	Dec. 31, 2013 2011 Warrants [Member]	Sep. 18, 2013 2011 Warrants [Member]	Jan. 16, 2013 2011 Warrants [Member]	Dec. 31, 2012 2011 Warrants [Member]	Dec. 31, 2011 2011 Warrants [Member]	Feb. 22, 2011 2011 Warrants [Member]	Feb. 22, 2013 2012 $0.15 Warrants [Member]	Dec. 31, 2013 2012 $0.15 Warrants [Member]	Dec. 31, 2012 2012 $0.15 Warrants [Member]	Jul. 02, 2012 2012 $0.15 Warrants [Member]	Dec. 31, 2012 2012 $0.25 Warrants [Member]	Jul. 02, 2012 2012 $0.25 Warrants [Member]	Jan. 16, 2013 Third Tranche Warrants [Member]	Dec. 31, 2013 Third Tranche Warrants [Member]	Dec. 31, 2012 2012 Warrants [Member]	Dec. 31, 2013 2012 Warrants [Member]	Sep. 18, 2013 2012 Warrants [Member]	Feb. 22, 2013 2012 Warrants [Member]	Jan. 16, 2013 2012 Warrants [Member]	Jul. 02, 2012 2012 Warrants [Member]	Dec. 31, 2013 2012 Convertible Notes [Member]	Dec. 31, 2012 2012 Convertible Notes [Member]	Feb. 22, 2011 First Tranche [Member] Convertible Notes [Member]	Feb. 22, 2011 Second Tranche [Member] 2012 Convertible Notes [Member]	Feb. 22, 2013 2011 Convertible Notes [Member]	Dec. 31, 2013 2011 Convertible Notes [Member]	Dec. 31, 2012 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]	Dec. 31, 2012 Convertible Notes [Member]	Feb. 22, 2011 Convertible Notes [Member]	Feb. 22, 2013 2012 Convertible Notes [Member]	Dec. 31, 2013 2012 Convertible Notes [Member]	Dec. 31, 2012 2012 Convertible Notes [Member]	Sep. 18, 2013 2012 Convertible Notes [Member]	Feb. 22, 2013 Third Tranche Convertible Notes [Member]	Dec. 31, 2013 Third Tranche Convertible Notes [Member]	Sep. 18, 2013 Third Tranche Convertible Notes [Member]	Jan. 16, 2013 Third Tranche Convertible Notes [Member]	Dec. 31, 2012 Third Tranche Convertible Notes [Member]	Dec. 31, 2013 2011 Warrants [Member]	Dec. 31, 2012 2011 Warrants [Member]	Dec. 31, 2012 Third Tranche Warrants [Member]
Note 9 - Convertible Notes and Warrant Liabilities (Details) [Line Items]
Debt Instrument, Interest Rate, Stated Percentage																																									5.00%										5.00%
Debt Instrument, Face Amount																																									$ 4,000,000
Class of Warrant or Right, Outstanding (in Shares)												17,940,780			40,000,000		40,000,000		7,065,255	10,000,000		10,000,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)								0.098			0.098	0.098			0.15		0.15	0.098	0.098	0.15	0.15	0.25	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)																					10,000,000		10,000,000	2,500,000							20,000,000
Convertible Debt		4,494,355	5,000,000																																																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
Interest Payable		144,000	8,000
Debt Instrument Period Considered in Year for Calculation of Interest																																						360 days
Debt Conversion, Converted Instrument, Amount		810,000																																			755,645
Debt Conversion, Converted Instrument, Shares Issued (in Shares)																																					8,304,837
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	65,263,156						16,315,790	16,315,790					2,500,000	2,500,000
Payment to Warrant Holders as Percentage of Exercise Price												30.00%
(in Shares)												47,322,376							9,250,535								9,250,535																										47,322,376
Common Stock Shares Issued Upon Conversion of Warrants (in Shares)												19,608,926															3,401,809																										19,609,000
(in Shares)												47,322,376							9,250,535								9,250,535																										47,322,376
Gains (Losses) on Extinguishment of Debt		(3,274,000)										(1,916,000)													300,000							168,000					(1,362,000)								(355,000)				(109,000)
Long-term Debt, Gross																																											3,208,000			417,000					142,000
Debt Instrument, Unamortized Discount																																								792,000						583,000						108,000
Amortization of Debt Discount (Premium)	95,000	95,000	331,000																																	38,000		265,000						55,000		66,000		2,000
Change in Fair Value of Convertible Notes		4,814,000	(2,024,000)																																		3,810,000	918,000							988,000	1,105,000			16,000
Convertible Debt, Fair Value Disclosures																																				6,070,000												386,000
Write-off of Debt Discount																																				265,000								462,000				106,000
Financial and Nonfinancial Liabilities, Fair Value Disclosure	17,490,000	7,217,000	11,898,000	13,537,000	12,592,000	6,927,000					3,916,000	179,000	1,048,000	2,000,000	2,000,000	1,600,000								300,000		1,800,000	141,000	424,000	1,632,000	1,800,000									4,920,000					1,516,000			1,390,000			361,000
Derivative Liability, Fair Value, Gross Liability												179,000												300,000								141,000					3,290,000								1,010,000				237,000		394,000		2,417,000
Stock Issued During Period, Value, Conversion of Convertible Securities		810,000																									238,000										810,000
Change in Fair Value of Warrant Liabilities		6,964,000	(1,617,000)									1,320,000													192,000							1,253,000	1,100,000																					918,000
(in Shares)												47,322,376							9,250,535								9,250,535																										47,322,376
Proceeds from Convertible Debt																																																							108,000
Debt Issuance Cost			$ 80,000