Financing (Tables)

3 Months Ended

Mar. 31, 2014

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 March 31, 2014:

							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 Convertible Preferred Stock		22		17		5		314,619
Series D Convertible 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 March 31, 2014 is reflected in the following table in addition to the principal and interest converted since inception and the number of shares of common stock issued upon conversion.

	Outstanding  principal and  accrued interest  at March   31, 2014		Principal and  accrued interest  converted since  inception		Common  Shares  issued
	(in thousands)
Debentures	$	43,468	$	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 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 March 31, 2014 and December 31, 2013.

March 31, 2014
	Face		Carrying		Embedded  Conversion		Common  Stock
	Value		Value		Feature		Shares
	(in thousands)
Series C Convertible Preferred Stock	$	4,816	$	4,816	$	148		24,823,015
Series D Convertible Preferred Stock		348		348		11		1,794,330
Total	$	5,164	$	5,164	$	159		26,617,345

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

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 Convertible Preferred Stock and debentures

	Three months ended  March 31,
	2014		2013
	(in thousands)
Series C Convertible Preferred Stock	$	21,867	$	(289)
Series D Convertible Preferred Stock		1,580		(21)
Debentures:
2006		-		11
Gain (loss) from change in fair value of derivative liability - Series C and D Convertible Preferred Stock and debentures	$	23,447	$	(299)

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 shares of common stock into which the instruments are convertible as of March 31, 2014 and December 31, 2013.

March 31, 2014					Common
	Face		Fair		Stock
	Value		Value		Shares
	(in thousands)
Debentures:
2006	$	1,962	$	2,041		12,285,288
2007		839		950		3,244,058
2008		2,047		1,898		11,689,415
2009		134		155		923,440
2011		852		866		5,226,562
2012		972		1,013		8,524,582
2013		34,211		31,872		192,394,516
Total	$	41,017	$	38,795		234,287,861

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

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 from change in fair value of hybrid financial instruments

	Three months ended March 31,
	2014		2013
	(in thousands)
2006	$	11,471	$	1,887
2007		2,637		2,329
2008		10,927		1,657
2009		863		(74)
2010		-		623
2011		4,879		249
2012		8,356		103
2013		179,523		-
Gain from changes in fair value of hybrid instruments	$	218,656	$	6,774

Schedule of Warrants Embedded Warrants Fair Value Outstanding 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:

			March 31, 2014						December 31, 2013
			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 Convertible Preferred Stock		2017		0.000100		87,368	$	44		0.000100		87,368	$	121
Warrants issued with debentures:
2008		2015		0.000100		238,079		117		0.000100		238,079		324
2010		2015		0.000100		81,340		40		0.000100		81,340		111
2011		2016		0.000100		58,256		29		0.000100		58,256		80
2012		2017		0.000100		34,947		17		0.000100		34,947		48
Total						499,990	$	247				499,990	$	684

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

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

Gain from change in fair value of derivative liability – warrants

	Three months ended March 31,
	2014		2013
	(in thousands)
Warrants issued with preferred stock:
Series D Convertible Preferred Stock	$	77	$	608
Warrants issued with debentures:
2008		207		1,424
2010		71		480
2011		51		387
2012		31		223
Gain from change in fair value of derivative liability – warrants	$	437	$	3,122

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 during the three months ended March 31, 2014 (in thousands):

	Compound
	Embedded		Warrant		Hybrid
	Derivatives		Derivatives		Instruments		Total
Beginning balance, December 31, 2013:	$	23,606	$	684	$	257,451	$	281,741
Fair value adjustments:
Compound embedded derivatives		(23,447)		-		-		(23,447)
Warrant derivatives		-		(437)		-		(437)
Hybrid instruments		-		-		(218,656)		(218,656)
Ending balance, March 31, 2014	$	159	$	247	$	38,795	$	39,201