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Note 10 - Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2013

Note 10 - Fair Value Measurements (Tables) [Line Items]

Fair Value, Liabilities Measured on Recurring and Nonrecurring Basis [Table Text Block]

						Fair Value Measurements at Reporting Date Using:
Description		Balance as of December 31, 2012				Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs(Level 2)				Significant Unobservable Inputs (Level 3)

Liabilities
Convertible notes		$	8,098,000			$	—			$	—			$	8,098,000
Warrant liabilities		$	3,800,000			$	—			$	—			$	3,800,000
Total Liabilities		$	11,898,000			$	—			$	—			$	11,898,000

						Fair Value Measurements at Reporting Date Using:
Description		Balance as of December 31, 2013				Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs(Level 2)				Significant Unobservable Inputs(Level 3)

Liabilities
Convertible notes		$	4,537,000			$	—			$	—			$	4,537,000
Warrant and option liabilities		$	2,680,000			$	—			$	—			$	2,680,000
Total Liabilities		$	7,217,000			$	—			$	—			$	7,217,000

Fair Value, by Balance Sheet Grouping [Table Text Block]

		Fair Value of 2011 Convertible Notes				Fair Value of 2011 Warrant Liabilities				Fair Value of 2012 Convertible Notes				Fair Value of 2012 Warrant Liabilities				Fair Value of Third Tranche Convertible Notes				Fair Value of Third Tranche Warrant Liabilities				February 2013 Warrants				February 2013 SPA Option				September 2013 Warrants				September 2013 SPA Options				Total
Balance December 31, 2011		$	5,327,000			$	1,600,000			$	—			$	—			$	—			$	—			$	—			$	—			$	—			$	—			$	6,927,000
Amortization of debt discount		$	265,000			$	—			$	66,000			$	—			$	—			$	—			$	—			$	—			$	—			$	—			$	331,000
Allocation of initial proceeds		$	—			$	—			$	417,000			$	583,000			$	—			$	—			$	—			$	—			$	—			$	—			$	1,000,000
Fair value adjustment		$	918,000			$	400,000			$	1,105,000			$	1,217,000			$	—			$	—			$	—			$	—			$	—			$	—			$	3,640,000
Balance December 31, 2012		$	6,510,000			$	2,000,000			$	1,588,000			$	1,800,000			$	—			$	—			$	—			$	—			$	—			$	—			$	11,898,000
Allocation of initial proceeds		$	—			$	—			$	—			$	—			$	142,000			$	108,000			$	—			$	—			$	—			$	—			$	250,000
Initial fair value adjustment		$	—			$	—			$	—			$	—			$	252,000			$	192,000			$	—			$	—			$	—			$	—			$	444,000

January 16, 2013		$	6,510,000			$	2,000,000			$	1,588,000			$	1,800,000			$	394,000			$	300,000			$	—			$	—			$	—			$	—			$	12,592,000

Amortization of debt discount		$	38,000			$	—			$	55,000			$	—			$	2,000			$	—			$	—			$	—			$	—			$	—			$	95,000
Fair value adjustment		$	(370,000	)		$	—			$	(72,000	)		$	—			$	(8,000	)		$	—			$	—			$	—			$	—			$	—			$	(450,000	)
Carrying value of old debt at modification		$	(6,178,000	)		$	—			$	(1,571,000	)		$	—			$	(388,000	)		$	—			$	—			$	—			$	—			$	—			$	(8,137,000	)
Fair value of new debt at modification		$	6,070,000			$	—			$	1,516,000			$	—			$	386,000			$	—			$	—			$	—			$	—			$	—			$	7,972,000
Modification of warrants		$	—			$	1,916,000			$	—			$	632,000			$	—			$	—			$	—			$	—			$	—			$	—			$	2,548,000
Cancellation/retirement of warrants		$	—			$	—			$	—			$	(800,000	)		$	—			$	(300,000	)		$	—			$	—			$	—			$	—			$	(1,100,000	)
Fair value of instruments at issuance		$	—			$	—			$	—			$	—			$	—			$	—			$	2,759,000			$	1,211,000			$	—			$	—			$	3,970,000

February 22, 2013		$	6,070,000			$	3,916,000			$	1,516,000			$	1,632,000			$	386,000			$	—			$	2,759,000			$	1,211,000			$	—			$	—			$	17,490,000

Fair value adjustment		$	(1,932,000	)		$	(716,000	)		$	(536,000	)		$	(970,000	)		$	(136,000	)		$	—			$	(742,000	)		$	(807,000	)		$	—			$	—			$	(5,839,000	)
Carrying value of old debt at modification		$	(3,450,000	)		$	—			$	(980,000	)		$	—			$	(250,000	)		$	—			$	—			$	—			$	—			$	—			$	(4,680,000	)
Fair value of new debt at modification		$	4,920,000			$	—			$	1,390,000			$	—			$	361,000			$	—			$	—			$	—			$	—			$	—			$	6,671,000
Conversion of debentures and warrants		$	(688,000	)		$	(2,152,000	)		$	—			$	(238,000	)		$	—			$	—			$	—			$	—			$	—			$	—			$	(3,078,000	)
Fair value of instruments at issuance		$	—			$	—			$	—			$	—			$	—			$	—			$	—			$	—			$	1,807,000			$	1,166,000				2,973,000

September 18, 2013		$	4,920,000			$	1,048,000			$	1,390,000			$	424,000			$	361,000			$	—			$	2,017,000			$	404,000			$	1,807,000			$	1,166,000			$	13,537,000

Conversion of debentures and warrants		$	(122,000	)		$	(265,000	)		$	—			$	—			$	—			$	—			$	—			$	--			$	—			$	—			$	(387,000	)
Fair value adjustment		$	(1,508,000	)		$	(604,000	)		$	(380,000	)		$	(283,000	)		$	(124,000	)		$	—			$	(576,000	)		$	(404,000	)		$	(1,180,000	)		$	(874,000	)		$	(5,933,000	)

December 31, 2013		$	3,290,000			$	179,000			$	1,010,000			$	141,000			$	237,000			$	—			$	1,441,000			$	--			$	627,000			$	292,000			$	7,217,000

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

		Convertible Notes				Warrants				Total
Balance December 31, 2012			8,098,000				3,800,000				11,898,000
Issuances			142,000				7,051,000				7,193,000
Amortization of debt discount			95,000				--				95,000
Debt extinguishment and modification of warrants			1,826,000				1,448,000				3,274,000
Conversion of debentures and warrants			(810,000	)			(2,655,000	)			(3,465,000	)
Fair value adjustments			(4,814,000	)			(6,964,000	)			(11,778,000	)
December 31, 2013			4,537,000				2,680,000				7,217,000

February 2013 Warrants [Member] | Monte Carlo Simulation Model [Member]

Note 10 - Fair Value Measurements (Tables) [Line Items]

Fair Value Inputs, Liabilities, Quantitative Information [Table Text Block]

Input		February 22, 2013				December 31, 2013
Stock Price		$	0.12			$	0.04
Exercise Price		$	0.20			$	0.08
Expected Life (in years)			5				4.15
Stock Volatility			110	%			100	%
Risk-Free Rate			0.84	%			1.34	%
Number of Steps			100,000				100,000
Outstanding Shares of Common Stock			59,576,097				160,664,862

Convertible Notes [Member]

Note 10 - Fair Value Measurements (Tables) [Line Items]

Fair Value Inputs, Liabilities, Quantitative Information [Table Text Block]

Input		December 31, 2012				February 22, 2013				September 18 2013				December 31, 2013
Stock Price		$	0.15			$	0.14			$	0.075			$	0.04
Strike Price		$	0.10			$	0.10			$	0.06			$	0.06
Expected remaining term (in years)			1.15				2.35				1.78				1.50
Stock Volatility			105	%			100	%			100	%			95	%
Risk-Free Rate			0.17	%			0.32	%			0.38	%			0.25	%
Dividend Rate			0	%			0	%			0	%			0	%
Outstanding Shares of Common Stock			32,434,430				59,576,097				143,997,066				160,664,862
Effective discount rate			13.1	%			13.2	%			16.4	%			19.6	%
Probability of forced redemption			20	%			20	%			20	%			20	%

Input		December 31, 2012				February 22, 2013				September 18 2013				December 31, 2013
Stock Price		$	0.15			$	0.14			$	0.075			$	0.04
Exercise Price		$	0.10			$	0.10			$	0.06			$	0.06
Expected remaining term (in years)			2.50				2.35				1.79				1.50
Stock Volatility			100	%			100	%			100	%			95	%
Risk-Free Rate			0.31	%			0.32	%			0.38	%			0.26	%
Dividend Rate			0	%			0	%			0	%			0	%
Outstanding Shares of Common Stock			32,434,430				59,576,097				143,997,066				160,664,862
Effective discount rate			13.2	%			13.2	%			16.4	%			19.6	%
Probability of forced redemption			20	%			20	%			20	%			20	%

Input		January 16, 2013				February 22, 2013				September 18 2013				December 31, 2013
Stock Price		$	0.15			$	0.14			$	0.075			$	0.04
Exercise Price		$	0.10			$	0.10			$	0.06			$	0.06
Expected remaining term (in years)			3				2.90				2.33				2.04
Stock Volatility			100	%			100	%			100	%			95	%
Risk-Free Rate			0.36	%			0.39	%			0.56	%			0.40	%
Dividend Rate			0	%			0	%			0	%			0	%
Outstanding Shares of Common Stock			32,434,430				59,576,097				143,997,066				160,664,862
Effective discount rate			13.2	%			13.2	%			13.3	%			21.3	%
Probability of forced redemption			20	%			20	%			20	%			20	%

Black-Sholes-Merton Option Pricing Model [Member]

Note 10 - Fair Value Measurements (Tables) [Line Items]

Fair Value Inputs, Liabilities, Quantitative Information [Table Text Block]

Input		December 31, 2012				February 22, 2013				December 31, 2013
Stock Price		$	0.15			$	0.14			$	0.04
Exercise Price		$	0.15			$	0.15			$	0.098
Expected Life (in years)			3.15				3.00				2.15
Stock Volatility			100	%			100	%			95	%
Risk-Free Rate			0.39	%			0.40	%			0.21	%
Dividend Rate			0	%			0	%			0	%
Outstanding Shares of Common Stock			32,434,430				59,576,097				160,664,862

Input		December 31, 2012				February 22, 2013				December 31, 2013
Stock Price		$	0.15			$	0.14			$	0.04
Exercise Price		$	0.15			$	0.15			$	0.098
Expected Life (in years)			4.50				4.38				3.50
Stock Volatility			100	%			100	%			100	%
Risk-Free Rate			0.63	%			0.70	%			1.02	%
Dividend Rate			0	%			0	%			0	%
Outstanding Shares of Common Stock			32,434,430				59,576,097				160,664,862

Input		December 31, 2012
Stock Price		$	0.15
Exercise Price		$	0.25
Expected Life (in years)			4.50
Stock Volatility			100	%
Risk-Free Rate			0.63	%
Dividend Rate			0	%
Outstanding Shares of Common Stock			32,434,430

Input		January 16, 2013
Stock Price		$	0.15
Exercise Price		$	0.15
Expected Life (in years)			5
Stock Volatility			110	%
Risk-Free Rate			0.75	%
Dividend Rate			0	%
Outstanding Shares of Common Stock			32,434,430

Input		February 22, 2013
Stock Price		$	0.14
Exercise Price		$	0.15
Expected Life (in years)			0.75
Stock Volatility			110	%
Risk-Free Rate			0.15	%
Dividend Rate			0	%
Outstanding Shares of Common Stock			73,042,764

Input		September 18, 2013				December 31, 2013
Stock Price		$	0.075			$	0.04
Exercise Price		$	0.06			$	0.06
Expected Life (in years)			0.748				0.463
Stock Volatility			110	%			100	%
Risk-Free Rate			0.07	%			0.10	%
Dividend Rate			0	%			0	%
Outstanding Shares of Common Stock			143,997,066				160,664,862

Monte Carlo Simulation Model [Member]

Note 10 - Fair Value Measurements (Tables) [Line Items]

Fair Value Inputs, Liabilities, Quantitative Information [Table Text Block]

Input		February 22, 2013
Stock Price (simulated)		$	0.10
Exercise Price		$	0.20
Expected Life (in years)			5.00
Stock Volatility			110	%
Risk-Free Rate			1.158	%
Number of Steps			10,000

Input		September 18, 2013				December 31, 2013
Stock Price		$	0.071			$	0.04
Exercise Price		$	0.08			$	0.08
Expected Life (in years)			5				4.72
Stock Volatility			110	%			100	%
Risk-Free Rate			1.43	%			1.61	%
Number of Steps			100,000				100,000

Input		September 18, 2013				December 31, 2013
Stock Price (simulated)		$	0.075			$	0.04
Exercise Price		$	0.08			$	0.08
Expected Life (in years)			0.7480				0.463
Stock Volatility			110	%			100	%
Risk-Free Rate			0.07	%			0.10	%
Number of Steps			10,000				10,000

Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities.

+ References+ Details

Tabular disclosure of liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring and/or nonrecurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). Where the quoted price in an active market for the identical liability is not available, the Level 1 input is the quoted price of an identical liability when traded as an asset.

+ References+ Details

Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability.

+ References+ Details