Financing (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Debt Conversion [Line Items]
Face Amount	$ 35,826	$ 35,845
Interest Rate	12.00%
Debenture Issuance In 2006 [Member]
Debt Conversion [Line Items]
Face Amount	1,962
Interest Rate	9.50%
Fixed Price	$ 2.00
Debenture Issuance In 2006 [Member] | Convertible Debt Securities [Member]
Debt Conversion [Line Items]
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Anti-Dilution Adjusted Price	$ 0.000095
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Anti-Dilution Adjusted Price, Percentage	90.00%
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Look-back Period	125 days
Debenture Issuance One In 2007 [Member]
Debt Conversion [Line Items]
Face Amount	540
Interest Rate	9.50%
Fixed Price	$ 2.00
Debenture Issuance One In 2007 [Member] | Convertible Debt Securities [Member]
Debt Conversion [Line Items]
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Anti-Dilution Adjusted Price	$ 0.000095
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Anti-Dilution Adjusted Price, Percentage	90.00%
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Look-back Period	125 days
Debenture Issuance Two In 2007 [Member]
Debt Conversion [Line Items]
Face Amount	272
Interest Rate	0.00%
Fixed Price	$ 2.00
Debenture Issuance Two In 2007 [Member] | Convertible Debt Securities [Member]
Debt Conversion [Line Items]
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Anti-Dilution Adjusted Price	$ 0.000090
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Anti-Dilution Adjusted Price, Percentage	95.00%
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Look-back Period	125 days
Debenture Issuance One In 2008 [Member]
Debt Conversion [Line Items]
Face Amount	1,095
Interest Rate	9.50%
Fixed Price	$ 2.00
Debenture Issuance One In 2008 [Member] | Convertible Debt Securities [Member]
Debt Conversion [Line Items]
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Anti-Dilution Adjusted Price	$ 0.000095
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Anti-Dilution Adjusted Price, Percentage	90.00%
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Look-back Period	125 days
Debenture Issuance Two In 2008 [Member]
Debt Conversion [Line Items]
Face Amount	830
Interest Rate	0.00%
Fixed Price	$ 2.00
Debenture Issuance Two In 2008 [Member] | Convertible Debt Securities [Member]
Debt Conversion [Line Items]
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Anti-Dilution Adjusted Price	$ 0.000090
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Anti-Dilution Adjusted Price, Percentage	95.00%
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Look-back Period	125 days
Debenture Issuance 2009 [Member]
Debt Conversion [Line Items]
Face Amount	0
Interest Rate	9.50%
Fixed Price	$ 2.00
Debenture Issuance 2009 [Member] | Convertible Debt Securities [Member]
Debt Conversion [Line Items]
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Anti-Dilution Adjusted Price	$ 0.000095
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Anti-Dilution Adjusted Price, Percentage	90.00%
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Look-back Period	125 days
Debenture Issuance 2011 [Member]
Debt Conversion [Line Items]
Face Amount	794
Interest Rate	9.50%
Fixed Price	$ 2.00
Debenture Issuance 2011 [Member] | Convertible Debt Securities [Member]
Debt Conversion [Line Items]
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Anti-Dilution Adjusted Price	$ 0.000095
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Anti-Dilution Adjusted Price, Percentage	90.00%
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Look-back Period	125 days
Debenture Issuance One In 2012 [Member]
Debt Conversion [Line Items]
Face Amount	762
Interest Rate	9.50%
Fixed Price	$ 2.00
Debenture Issuance One In 2012 [Member] | Convertible Debt Securities [Member]
Debt Conversion [Line Items]
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Anti-Dilution Adjusted Price	$ 0.000095
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Anti-Dilution Adjusted Price, Percentage	90.00%
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Look-back Period	125 days
Debenture Issuance Two In 2012 [Member]
Debt Conversion [Line Items]
Face Amount	210
Interest Rate	0.00%
Fixed Price	$ 2.00
Debenture Issuance Two In 2012 [Member] | Convertible Debt Securities [Member]
Debt Conversion [Line Items]
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Anti-Dilution Adjusted Price	$ 0.000090
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Anti-Dilution Adjusted Price, Percentage	95.00%
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Look-back Period	125 days
Debenture Issuance One In 2013 [Member]
Debt Conversion [Line Items]
Face Amount	22,084
Interest Rate	9.50%
Fixed Price	$ 2.00
Debenture Issuance One In 2013 [Member] | Convertible Debt Securities [Member]
Debt Conversion [Line Items]
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Anti-Dilution Adjusted Price	$ 0.000095
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Anti-Dilution Adjusted Price, Percentage	90.00%
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Look-back Period	125 days
Debenture Issuance Two In 2013 [Member]
Debt Conversion [Line Items]
Face Amount	7,127
Interest Rate	0.00%
Fixed Price	$ 2.00
Debenture Issuance Two In 2013 [Member] | Convertible Debt Securities [Member]
Debt Conversion [Line Items]
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Anti-Dilution Adjusted Price	$ 0.000095
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Anti-Dilution Adjusted Price, Percentage	95.00%
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Look-back Period	125 days
Debenture Issuance 2014 [Member]
Debt Conversion [Line Items]
Face Amount	$ 150
Interest Rate	9.50%
Fixed Price	$ 2.00
Debenture Issuance 2014 [Member] | Convertible Debt Securities [Member]
Debt Conversion [Line Items]
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Anti-Dilution Adjusted Price	$ 0.000090
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Anti-Dilution Adjusted Price, Percentage	90.00%
Conversion Price - Lower of Fixed Price or Percentage of VWAP for Look-back Period, Look-back Period	125 days