Financing (Tables)

12 Months Ended

Dec. 31, 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 debentures for which the entire hybrid instrument is recorded at fair value as of December 31, 2013:

							Conversion Price – Lower of Fixed Price or Percentage of VWAP for Look-back period
							Anti- Dilution
Debenture	Face		Interest			Fixed	Adjusted				Look-back
Issuance Year	Amount		Rate			Price	Price		%		Period
	(in thousands)
2006	$	1,962	9.5	%	$	2.00	$	0.00018	90	%	125 Days
2007		567	9.5	%	$	2.00	$	0.00018	90	%	125 Days
2007		272	-		$	2.00	$	0.00019	95	%	125 Days
2008		1,217	9.5	%	$	2.00	$	0.00018	90	%	125 Days
2008		830	-		$	2.00	$	0.00019	95	%	125 Days
2009		134	9.5	%	$	2.00	$	0.00018	90	%	125 Days
2011		852	9.5	%	$	2.00	$	0.00018	90	%	125 Days
2012		762	9.5	%	$	2.00	$	0.00018	90	%	125 Days
2012		210	-		$	2.00	$	0.00019	95	%	125 Days
2013		22,084	9.5	%	$	2.00	$	0.00018	90	%	125 Days
2013		12,127	-		$	2.00	$	0.00019	95	%	125 Days
Total	$	41,017

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 shares	Preferred shares	Preferred shares	Common shares
	issued	converted	remaining	issued
	(in thousands)
Series C Preferred Stock	22	17	5	314,619
Series D Preferred Stock	25	22	3	245,162

Schedule of Debt Conversions [Table Text Block]

The outstanding principal and accrued interest for the debentures as of December 31, 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 accrued interest at December  31, 2013		Principal and accrued interest converted since inception		Common Shares issued
	(in thousands)
Debentures	$	42,811	$	11,747		4,403,415

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 December 31, 2013 and 2012.

December 31, 2013
	Face		Carrying		Embedded Conversion		Common Stock
	Value		Value		Feature		Shares
	(in thousands)
Series C Preferred Stock	$	4,816	$	4,816	$	22,015	24,823,015
Series D Preferred Stock		348		348		1,591	1,794,330
Total	$	5,164	$	5,164	$	23,606	26,617,345

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
Total	$	5,188	$	5,188	$	-	$	2,131	990,410
Debentures:
2006	$	53	$	53	$	7		16	11,871

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

	Year ended December 31,
	2013		2012
	(in thousands)
Series C Preferred Stock	$	(20,036)	$	(2,066)
Series D Preferred Stock		(1,448)		(1,286)
Debentures:
2006		15		(3,005)
2008		-		(1,350)
2009		-		(484)
2010		-		(34)
2011		-		(4,825)
2012		-		15
Loss from change in fair value of derivative liability	$	(21,469)	$	(13,035)

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 December 31, 2013 and 2012.

December 31, 2013					Common
	Face		Fair		Stock
	Value		Value		Shares
	(in thousands)
Debentures:
2006	$	1,962	$	13,512	12,285,288
2007		839		3,587	3,244,058
2008		2,047		12,825	11,689,415
2009		134		1,018	923,440
2011		852		5,745	5,226,562
2012		972		9,369	8,524,582
2013		34,211		211,395	192,394,516
Total	$	41,017	$	257,451	234,287,861

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]

The changes in fair value of these hybrid financial instruments were as follows:

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

	Year ended December 31,
	2013		2012
	(in thousands)
2006	$	100	$	2,680
2007		13,343		798
2008		2,339		5,433
2009		1,249		708
2010		7,178		1,858
2011		(3,146)		840
2012		(7,060)		771
2013		(211,395)		-
		(197,392)		13,088
Less: Day-one loss from debenture financings		-		(1,162)
Gain (loss) from changes in fair value of hybrid instruments	$	(197,392)	$	11,926

Schedule of Warrants Embedded Warrants Fair Value Outsanding and Anti Diluative 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:

		December 31, 2013				December 31, 2012
		Anti- Dilution				Anti- Dilution
		Adjusted				Adjusted
	Expiration	Exercise		Fair		Exercise		Fair
	Year	Price ($)	Warrants	Value		Price ($)	Warrants	Value
		(in thousands)				(in thousands)
Warrants issued with preferred stock:
Series D Preferred Stock	2017	0.000100	87,368	$	121	0.00684	328,947	$	709
Warrants issued with debentures:
2008	2015	0.000100	238,079		324	0.00684	896,382		1,691
2010	2015	0.000100	81,350		111	0.00684	306,287		571
2011	2016	0.000100	58,246		80	0.00684	219,298		453
2012	2017	0.000100	34,947		48	0.00684	131,579		263
Total			499,990	$	684		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

	Year ended December 31,
	2013		2012
	(in thousands)
Warrants issued with preferred stock:
Series D Preferred Stock	$	588	$	1,826
Warrants issued with debentures:
2007		-		1,510
2008		1,366		5,185
2010		457		1,764
2011		378		1,233
2012		214		(171)
Total	$	3,003	$	11,347

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 year ended December 31, 2013 (in thousands):

	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		21,469		-		-		21,469
Warrant derivatives		-		(3,003)		-		(3,003)
Hybrid instruments		-		-		197,392		197,392
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)
October 18, 2008 financing		-		-		(23)		(23)
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)
February 6, 2012 financing		-		-		(29)		(29)
March 26, 2012 financing		-		-		(141)		(141)
June 1, 2012 financing		-		-		(567)		(567)
Ending balance, December 31, 2013	$	23,606	$	684	$	257,451	$	281,741