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Financing (Tables)

6 Months Ended

Jun. 30, 2013

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Significant Terms Debentures for Entire Hybrid Instrument [Table Text Block]

The following table summarizes the significant terms of each of the convertible debentures for which the entire hybrid instrument is recorded at fair value as of June 30, 2013:

									Conversion Price – Lower of Fixed Price or Percentage of VWAP for Look-back period
											Anti-
Debenture						Default					Dilution								Look-
Issuance	Face		Interest			Interest			Fixed		Adjusted					Default			Back
Year	Amount		Rate			Rate			Price		Price		%			%			Period
	(in thousands)
2006	$	6,493		9.50	%		n/a			$2.00		$0.00		90	%		n/a			125 Days
2007		7,373		9.50	%		n/a			$2.00				80%-90%			n/a			125 Days
2008		6,308		9.50	%		20%-24%			$1.00-$2.00		$0.00032-$0.00038		80%-95%			50%-75%			125 Days
2009		1,062		9.50	%		20	%		$2.00		$0.00		95	%		50	%		125 Days
2010		3,806		9.50	%		20	%		$0.10- $0.30		$0.00		95	%		50	%		60 Days
2011		1,551		9.50	%		20	%		$0.10		$0.00		95	%		50	%		60 Days
2012		1,543		9.50	%		20	%		$0.10		$0.00		95	%		50	%		60 Days
Total	$	28,136

Schedule of Significant Terms of Debentures Carried at Amortized Cost [Table Text Block]

The table below summarizes the significant terms of the debentures that are carried at their amortized cost and for which the compound embedded derivative is bifurcated and accounted for as a derivative liability as of June 30, 2013:

Conversion Price – Lower of Fixed Price or Percentage of VWAP for Look-
back Period

Default

Anti-Dilution

Debenture

Face

Interest

Fixed

Adjusted

Look-back

Issuance Year

Amount

Rate

Price

Period

(in thousands)

2006

n/a

2.00

0.000360

125 days

Schedule of Number of Shares Issued Convertible Preferred Stock [Table Text Block]

The following table provides a summary of the preferred stock conversions that have occurred since inception and the number of common shares issued upon conversion.

Preferred

Common

issued

converted

remaining

issued

(in thousands)

Series C Preferred Stock

314,619

Series D Preferred Stock

245,162

Schedule of Debt Conversions [Table Text Block]

The outstanding principal and accrued interest for the debentures as of June 30, 2013 is reflected in the following table in addition to the principal and interest converted since inception and the number of common shares issued upon conversion.

	Outstanding		Principal and
	principal and		accrued interest		Common
	accrued interest at		converted since		shares
	June 30, 2013		inception		issued
	(in thousands)

Debentures	$	42,599	$	11,720		4,328,415

Schedule of Activities of Compound Embedded Derivative [Table Text Block]

The following table reflects the face value of the instruments, their amortized carrying value and the fair value of the separately-recognized compound embedded derivative, as well the number of common shares into which the instruments are convertible as of June 30, 2013 and December 31, 2012.

June 30, 2013							Embedded		Common
	Face		Carrying		Accrued		Conversion		Stock
	Value		Value		Interest		Feature		Shares
	(in thousands)

Series C Preferred Stock	$	4,816	$	4,816	$	-	$	3,967		12,411,508
Series D Preferred Stock	$	348	$	348	$	-		287		897,165

Debentures:
2006	$	53	$	53	$	9		32		171,153
Total	$	53	$	53	$	9	$	4,286		13,479,826

December 31, 2012							Embedded		Common
	Face		Carrying		Accrued		Conversion		Stock
	Value		Value		Interest		Feature		Shares
	(in thousands)

Series C Preferred Stock	$	4,840	$	4,840	$	-	$	1,988		923,953
Series D Preferred Stock	$	348	$	348	$	-		143		66,457

Debentures:
2006	$	53	$	53	$	7		16		11,871
Total	$	53	$	53	$	7	$	2,147		1,002,281

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

Gain (loss) from change in fair value of derivative liability- Series C and D Preferred Stock and debentures

	Three months ended June 30,				Six months ended June 30,
	2013		2012		2013		2012
	(in thousands)				(in thousands)
Series C Preferred Stock	$	(1,700)	$	11,915	$	(1,989)	$	(3,202)
Series D Preferred Stock		(123)		1,946		(144)		(1,346)

Debentures:
2006		(26)		18,815		(16)		(3,070)
2008		-		13,391		-		(1,350)
2009		-		4,964		-		(486)
2010		-		11,901		-		(34)
2011		-		8,896		-		(4,825)
2012		-		3,523		-		15
Gain (loss) from change in fair value of derivative liability		(1,849)		75,351		(2,149)		(14,298)

Schedule of Hybrid Financial Instrument Disclosure [Table Text Block]

The following table reflects the face value of the financial instruments, the fair value of the hybrid financial instrument and the number of common shares into which the instruments are convertible as of June 30, 2013 and December 31, 2012.

June 30, 2013					Common
	Face		Fair		Stock
	Value		Value		Shares
	(in thousands)
Debentures:
2006	$	6,493	$	18,926		27,030,155
2007		7,373		22,423		32,303,705
2008		6,308		21,825		31,327,015
2009		1,062		3,548		5,004,868
2010		3,806		9,691		13,786,842
2011		1,551		3,194		4,581,445
2012		1,543		3,299		4,724,768
Total	$	28,136	$	82,906		118,758,798

December 31, 2012					Common
	Face		Fair		Stock
	Value		Value		Shares
	(in thousands)
Debentures:
2006	$	6,180	$	14,758		5,196,283
2007		6,856		17,172		6,098,480
2008		6,468		15,492		5,487,497
2009		1,644		3,565		1,243,390
2010		3,806		7,178		2,512,724
2011		1,954		3,080		1,084,237
2012		1,979		3,047		1,073,527
Total	$	28,887	$	64,292		22,696,138

Schedule of Fair Value Hybrid Financial Instrument Disclosure [Table Text Block]

Gain (loss) from change in fair value of hybrid financial instruments

	Three months ended June 30,				Six months ended June 30,
	2013		2012		2013		2012
	(in thousands)				(in thousands)

2006	$	(7,202)	$	1,734	$	(5,315)	$	1,734
2007		(7,821)		24,068		(5,492)		(989)
2008		(8,296)		9,663		(6,639)		3,550
2009		(1,207)		433		(1,281)		433
2010		(3,138)		896		(2,515)		896
2011		(842)		512		(593)	\	512
2012		(1,063)		314		(960)		314
		(29,569)		37,620		(22,795)		6,450
Less: Day-one loss from debenture financings		-		(847)		-		(847)
Gain (loss) from changes in fair value of hybrid instruments	$	(29,569)	$	36,773	$	(22,795)	$	5,603

Schedule of Warrants Embedded Warrants Fair Value Outstanding and Anti-Dilutive Adjustment Disclosure [Table Text Block]

Warrants - The following table summarizes the warrants outstanding, their fair value and their exercise price after adjustment for anti-dilution provisions:

A summary of the Common Stock warrants outstanding follows:

			June 30, 2013						December 31, 2012
			Anti-Dilution						Anti-Dilution
			Adjusted						Adjusted
	Expiration		Exercise				Fair		Exercise				Fair
	Year		Price		Warrants		Value		Price		Warrants		Value
Warrants issued with preferred stock:	(in thousands)								(in thousands)

Series D Preferred Stock		2017		0.000100		87,368	$	49		0.00684		328,947	$	709

Warrants issued with debentures:

2008		2015		0.000100		238,079		130		0.00684		896,382		1,691

2010		2015		0.000100		81,350		44		0.00684		306,287		571

2011		2016		0.000100		58,246		33		0.00684		219,298		453

2012		2017		0.000100		34,947		20		0.00684		131,579		263

Total						499,990	$	276				1,882,493	$	3,687

Schedule of Changes in Fair Value of Warrants [Table Text Block]

The changes in the fair value of the warrants were as follows:

Gain (loss) from change in fair value of derivative liability- warrants

	Three months ended June 30,				Six months ended June 30,
	2013		2012		2013		2012
Warrants issued with preferred stock:	(in thousands)				(in thousands)
Series D Preferred Stock	$	51	$	6,819	$	659	$	(52)

Warrants issued with debentures:
2007		-		4,356		-		1,019
2008		137		19,093		1,561		550
2010		48		6,525		528		183
2011		33		4,578		420		1
2012		20		1,038		243		(780)
Total	$	289	$	42,409	$	3,411	$	921

Schedule of Reconciliation Changes in Fair Value of Financial Instruments and Hybrid Instruments Carried at Fair Value [Table Text Block]

The following represents a reconciliation of the changes in fair value of financial instruments measured at fair value using Level 3 inputs and changes in the fair value of hybrid instruments carried at fair value during the six months ended June 30, 2013:

	Compound
	Embedded		Warrant		Hybrid
	Derivatives		Derivatives		Instruments		Total

Beginning balance, December 31, 2012:	$	2,147	$	3,687	$	64,292	$	70,126

Fair value adjustments:
Compound embedded derivatives		2,149		-		-		2,149
Warrant derivatives		-		(3,411)		-		(3,411)
Hybrid instruments		-		-		22,795		22,795

Conversions:
Series C Preferred Stock		(10)		-		-		(10)
August 24, 2006 financing		-		-		(644)		(644)
December 29, 2006 financing		-		-		(503)		(503)
March 27, 2007 financing		-		-		(242)		(242)
April 11, 2008 financing		-		-		(71)		(71)
July 29, 2008 financing		-		-		(234)		(234)
July 15, 2009 financing		-		-		(823)		(823)
August 14, 2009 financing		-		-		(475)		(475)
February 8, 2011 financing		-		-		(28)		(28)
April 13, 2011 financing		-		-		(199)		(199)
October 25, 2011 financing		-		-		(37)		(37)
December 8, 2011 financing		-		-		(217)		(217)
March 26, 2012 financing		-		-		(141)		(141)
June 1, 2012 financing		-		-		(567)		(567)
Ending balance, June 30, 2013	$	4,286	$	276	$	82,906	$	87,468