Financing (Tables)

3 Months Ended

Mar. 31, 2015

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, 2015:

								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	$	0.000095		90	%		125 Days
2007		540		9.5	%	$	2.00	$	0.000095		90	%		125 Days
2007		272		-		$	2.00	$	0.000090		95	%		125 Days
2008		1,095		9.5	%	$	2.00	$	0.000095		90	%		125 Days
2008		830		-		$	2.00	$	0.000090		95	%		125 Days
2009		--		9.5	%	$	2.00	$	0.000095		90	%		125 Days
2011		794		9.5	%	$	2.00	$	0.000095		90	%		125 Days
2012		762		9.5	%	$	2.00	$	0.000095		90	%		125 Days
2012		210		-		$	2.00	$	0.000090		95	%		125 Days
2013		22,084		9.5	%	$	2.00	$	0.000095		90	%		125 Days
2013		7,127		-		$	2.00	$	0.000095		95	%		125 Days
2014		150		9.5	%	$	2.00	$	0.000090		90	%		125 Days
Total	$	35,826

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 through March 31, 2015.

	Preferred shares		Preferred shares		Preferred shares		Common shares
	issued		converted		remaining		issued
	(in thousands)
Series C Preferred Stock		22		18		4		1,264,419
Series D Preferred Stock		25		22		3		16,344

Schedule of Debt Conversions [Table Text Block]

The outstanding principal and accrued interest for the debentures as of March 31, 2015 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 March 31, 2015		Principal and accrued interest converted since inception	Common Shares issued
		(in thousands)
Debentures	$	40,248	$	12,577	2,754,770

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 March 31, 2015 and December 31, 2014:

March 31, 2015
	Face		Carrying		Embedded Conversion		Common Stock
	Value		Value		Feature		Shares
	(in thousands)
Series C Preferred Stock	$	4,317	$	4,317	$	1		44,505,155
Series D Preferred Stock		348		348		--		3,588,660
Total	$	4,665	$	4,665	$	1		48,093,815

December 31, 2014
	Face		Carrying		Embedded Conversion		Common Stock
	Value		Value		Feature		Shares
	(in thousands)
Series C Preferred Stock	$	4,332	$	4,332	$	5		44,659,794
Series D Preferred Stock		348		348		--		3,588,660
Total	$	4,680	$	4,680	$	5		48,248,454

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 March 31,
	2015		2014
	(in thousands)
Series C Preferred Stock	$	4	$	128
Series D Preferred Stock		1		9
Gain/(loss) from change in fair value of derivative liability	$	5	$	137

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 March 31, 2015 and December 31, 2014.

March 31, 2015					Common
	Face		Fair		Stock
	Value		Value		Shares
	(in thousands)
Debentures:
2006	$	1,962	$	2,102		24,204,635
2007		812		1,034		11,677,185
2008		1,925		2,028		22,883,750
2009		--		30		331,733
2011		794		849		9,780,037
2012		972		1,155		13,124,733
2013		29,211		31,501		358,502,804
2014		150		152		1,752,311
Total	$	35,826	$	38,851		442,257,188

December 31, 2014					Common
	Face		Fair		Stock
	Value		Value		Shares
	(in thousands)
Debentures:
2006	$	1,961	$	2,019		23,871,436
2007		814		1,000		11,549,397
2008		1,925		1,949		22,598,665
2009		7		46		517,119
2011		785		800		9,469,332
2012		972		1,111		12,926,448
2013		29,211		30,297		354,041,487
2014		170		162		1,930,434
Total	$	35,845	$	37,384		436,904,318

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 March 31,
	2015		2014
	(in thousands)
2006	$	(83)	$	(33)
2007		(34)		(417)
2008		(81)		7
2009		--		(4)
2010		--		--
2011		(34)		(12)
2012		(41)		379
2013		(1,236)		(465)
2014		(6)		--
		(1,515)		(545)
Less: Day-one loss from debenture financings		-		-
Gain (loss) from changes in fair value of hybrid instruments	$	(1,515)	$	(545)

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:

			March 31, 2015						December 31, 2014
			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		0.001500		5,825	$	1		.000100		5,825	$	0
Warrants issued with debentures:
2008		2015		0.001500		15,872		1		0.000100		15,872		1
2010		2015		0.001500		5,423		1		0.000100		5,423		1
2011		2016		0.001500		3,883		0		0.000100		3,884		0
2012		2017		0.001500		2,330		0		0.000100		2,330		0
Total						33,333	$	3				33,333	$	2

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

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

	Three months ended March 31,
	2015		2014
	(in thousands)
Warrants issued with preferred stock:
Series D Preferred Stock	$	--	$	66
Warrants issued with debentures:
2007		--		--
2008		(1)		177
2010		--		61
2011		--		43
2012		--		26
Total	$	(1)	$	373

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 three months ended March 31, 2015 (in thousands):

	Compound
	Embedded		Warrant		Hybrid
	Derivatives		Derivatives		Instruments		Total
Beginning balance, December 31, 2014:	$	6	$	2	$	37,384	$	37,392
Fair value adjustments:
Compound embedded derivatives		(5)		--		--		(5)
Warrant derivatives		--		1		--		1
Hybrid instruments		--		--		1,515		1,515
Conversions:
Series C Preferred Stock		--		--		--		--
August 24, 2006 financing		--		--		(12)		(12)
December 29, 2006 financing		--		--		--		--
March 27, 2007 financing		--		--		--		--
October 28, 2008 financing		--		--		--		--
August 14, 2009 financing		--		--		(16)		(16)
February 8, 2011 financing		--		--		--		--
March 11, 2011 financing		--		--		--		--
April 13, 2011 financing		--		--		--		--
May 31, 2011 financing		--		--		--		--
June 28, 2011 financing		--		--		--		--
December 8, 2011 financing		--		--		--		--
July 1, 2013 financing		--		--		--		--
Sep 15, 2014 financing		--		--		(20)		(20)
Ending balance, March 31, 2015	$	1	$	3	$	38,851	$	38,855