Financing (Tables)

9 Months Ended

Sep. 30, 2013

Derivative Instruments and Hedging Activities Disclosure [Abstract]

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

The follwoing table summarizes the significant terms of each of the debentures for which the entire hybrid instrument is recorded at fair value as of September 30, 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	$	2,263	9.5	%	$	2.00	$	0.00018	90	%	125 Days
2007		1,150	9.5	%	$	2.00	$	0.00018	90	%	125 Days
2008		1,216	9.5	%	$	2.00	$	0.00018	90	%	125 Days
2009		172	9.5	%	$	2.00	$	0.00018	90	%	125 Days
2011		864	9.5	%	$	2.00	$	0.00018	90	%	125 Days
2012		612	9.5	%	$	2.00	$	0.00018	90	%	125 Days
2013		22,344	9.5	%	$	2.00	$	0.00018	90	%	125 Days
2013		12,299	-		$	2.00	$	0.00019	95	%	125 Days
Total	$	40,920

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 September 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 accrued interest at September 30, 2013		Principal and accrued interest converted since inception		Common Shares issued
	(in thousands)
Debentures	$	43,665	$	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 September 30, 2013 and December 31, 2012.

September 30, 2013
	Face		Carrying		Embedded Conversion		Common Stock
	Value		Value		Feature		Shares
	(in thousands)
Series C Preferred Stock	$	4,816	$	4,816	$	6,440	24,823,015
Series D Preferred Stock		348		348		465	1,794,330
Total	$	5,164	$	5,164	$	6,905	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

	Three months ended September 30,				Nine months ended September 30,
	2013		2012		2013		2012
	(in thousands)				(in thousands)
Series C Preferred Stock	$	(2,473)	$	918	$	(4,462)	$	(2,284)
Series D Preferred Stock		(178)		44		(322)		(1,302)
Debentures:
2006		31		74		15		(2,996)
2008		-		-		-		(1,350)
2009		-		-		-		(486)
2010		-		-		-		(34)
2011		-		-		-		(4,825)
2012		-		-		-		15
Gain (loss) from change in fair value of derivative liability	$	(2,620)	$	1,036	$	(4,769)	$	(13,262)

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 September 30, 2013 and December 31, 2012.

September 30, 2013					Common
	Face		Fair		Stock
	Value		Value		Shares
	(in thousands)
Debentures:
2006	$	2,263	$	7,858	17,386,106
2007		1,150		3,001	6,707,442
2008		1,216		5,234	11,511,771
2009		172		876	1,919,461
2011		864		2,557	5,687,898
2012		612		1,786	3,974,950
2013		34,643		85,706	191,799,671
Total	$	40,920	$	107,018	238,987,299

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 September 30,				Nine months ended September 30,
	2013		2012		2013		2012
	(in thousands)				(in thousands)
2006	$	11,069	$	902	$	5,754	$	2,637
2007		19,420		1,994		13,929		1,005
2008		16,569		1,914		9,930		5,465
2009		2,672		477		1,391		912
2010		9,693		799		7,178		1,695
2011		635		155		42		666
2012		1,483		427		523		740
2013		(85,706)		-		(85,706)		-
		(24,165)		6,668		(46,959)		13,120
Less: Day-one loss from debenture financings		-		(315)		-		(1,162)
Gain (loss) from changes in fair value of hybrid instruments	$	(24,165 )	$	6,353	$	(46,959 )	$	11,958

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:

		September 30, 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	$	33	0.00684	328,947	$	709
Warrants issued with debentures:
2008	2015	0.000100	238,079		86	0.00684	896,382		1,691
2010	2015	0.000100	81,350		30	0.00684	306,287		571
2011	2016	0.000100	58,246		23	0.00684	219,298		453
2012	2017	0.000100	34,947		12	0.00684	131,579		263
Total			499,990	$	184		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 September 30,				Nine months ended September 30,
	2013		2012		2013		2012
	(in thousands)				(in thousands)
Warrants issued with preferred stock:
Series D Preferred Stock	$	16	$	847	$	675	$	795
Warrants issued with debentures:
2007		-		492		-		1,511
2008		44		2,107		1,605		2,657
2010		15		718		543		901
2011		11		565		431		566
2012		6		168		249		(612)
Total	$	92	$	4,897	$	3,503	$	5,818

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 nine months ended September 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		4,768		-		-		4,768
Warrant derivatives		-		(3,503)		-		(3,503)
Hybrid instruments		-		-		46,959		46,959
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, September 30, 2013	$	6,905	$	184	$	107,018	$	114,107