Financing (Tables)

9 Months Ended

Sep. 30, 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 September 30, 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	$	1,961		9.5	%	$	2.00	$	0.000090		90	%	125 Days
2007		542		9.5	%	$	2.00	$	0.000090		90	%	125 Days
2007		272		-		$	2.00	$	0.000095		95	%	125 Days
2008		1,095		9.5	%	$	2.00	$	0.000090		90	%	125 Days
2008		830		-		$	2.00	$	0.000095		95	%	125 Days
2011		794		9.5	%	$	2.00	$	0.000090		90	%	125 Days
2012		762		9.5	%	$	2.00	$	0.000090		90	%	125 Days
2012		210		-		$	2.00	$	0.000095		95	%	125 Days
2013		22,063		9.5	%	$	2.00	$	0.000090		90	%	125 Days
2013		7,127		-		$	2.00	$	0.000095		95	%	125 Days
2014		150		-		$	2.00	$	0.000095		95	%	125 Days
Total	$	35,806

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 September 30, 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 September 30, 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		Principal and
	accrued interest		accrued interest		Common
	at September 30,		converted since		Shares
	2015		inception		issued
	(in thousands)
Debentures	$	41,534	$	12,599		2,996,437

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, 2015 and December 31, 2014:

September 30, 2015
					Embedded		Common
	Face		Carrying		Conversion		Stock
	Value		Value		Feature		Shares
	(in thousands)
Series C Preferred Stock	$	4,317	$	4,317	$	31		44,505,154
Series D Preferred Stock		348		348		2		3,588,660
Total	$	4,665	$	4,665	$	33		48,093,814

December 31, 2014
					Embedded		Common
	Face		Carrying		Conversion		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				Nine months ended
	September 30,				September 30,
	2015		2014		2015		2014
	(in thousands)				(in thousands)
Series C Preferred Stock	$	(16)	$	27	$	(26)	$	255
Series D Preferred Stock		(1)		2		(1)		18
Debentures:
2006		–		–		–		—
Gain (loss) from change in fair value of derivative liability	$	(17)	$	29	$	(27)	$	273

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, 2015 and December 31, 2014.

September 30, 2015
					Common
	Face		Fair		Stock
	Value		Value		Shares
	(in thousands)
Debentures:
2006	$	1,961	$	2,210		25,242,791
2007		814		1,070		12,006,008
2008		1,925		2093		23,463,424
2009		—		30		331,733
2011		794		893		10,200,234
2012		972		1,199		13,527,912
2013		29,190		32,737		369,946,171
2014		150		160		1,831,512
Total	$	35,806	$	40,392		456,549,785

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					Nine  months ended
	September 30,					September 30,
	2015		2014			2015			2014
	(in thousands)					(in thousands)
2006	$	8	$	(83	)	$	(169	)	$	(144	)
2007		3		(35	)		(70	)		(49	)
2008		8		(82	)		(165	)		(140	)
2009		—		(1	)		—			(6	)
2011		3		(35	)		(69	)		(61	)
2012		4		(41	)		(84	)		(86	)
2013		127		(1,092	)		(2,50	8)		(2,056	)
2014		1		—			(12	)		—
Gain (loss) from changes in fair value of hybrid instruments	$	154	$	(1,369	)	$	(3,077	)	$	(2,542	)

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, 2015						December 31, 2014
		Anti-						Anti-
		Dilution						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		0.0015		5,825	$	1		0.0015			5,825	$	—
Warrants issued with debentures:
2008	2015		0.0015		-		—		0.0015			15,871		1
2010	2015		0.0015		634		—		0.0015			5,423		1
2011	2016		0.0015		3,884		—		0.0015			3,884		—
2012	2017		0.0015		2,330		—		0.0015			2,330		—
Total					12,673	$	1					33,333	$	2

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

Gain from change in fair value of derivative liability – warrants

	Three months ended				Nine months ended
	September 30,				September 30,
	2015		2014		2015		2014
	(in thousands)				(in thousands)
Warrants issued with preferred stock:
Series D Convertible Preferred Stock	$	—	$	7	$	—	$	108
Warrants issued with debentures:
2008		2		18		1		294
2010		—		6		—		101
2011		—		4		—		72
2012		—		3		—		43
Gain from change in fair value of derivative liability – warrants	$	2	$	38	$	1	$	618

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, 2015 (in thousands):

	Compound
	Embedded		Warrant		Hybrid
	Derivatives		Derivatives		Instruments		Total
Beginning balance, December 31, 2014:	$	6	$	2	$	37,385	$	37,393
Fair value adjustments:
Compound embedded derivatives		27		(1)		—		26
Warrant derivatives		—		—		—		—
Hybrid instruments		—		—		3,077		3,077
Conversions:
August 24, 2006 financing		—		—		(12)		(12)
August 14, 2009 financing		—		—		(16)		(16)
July 1, 2013 financing		—		—		(22)		(22)
September 15, 2014 financing		—		—		(20)		(20)
Ending balance, September 30, 2015	$	33	$	1	$	40,392	$	40,426