Financing (Details 5) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Debt Conversion [Line Items]
Debentures, Face Value	$ 41,017	$ 41,017
Debentures, Fair Value	38,795	38,250
Debentures, Common Stock Shares	234,287,861	15,619,639
Debentures 2006 Series [Member]
Debt Conversion [Line Items]
Debentures, Face Value	1,962	1,962
Debentures, Fair Value	2,041	2,008
Debentures, Common Stock Shares	12,285,288	819,019
Debentures 2007 Series [Member]
Debt Conversion [Line Items]
Debentures, Face Value	839	839
Debentures, Fair Value	950	533
Debentures, Common Stock Shares	3,244,058	216,720
Debentures 2008 Series [Member]
Debt Conversion [Line Items]
Debentures, Face Value	2,047	2,047
Debentures, Fair Value	1,898	1,905
Debentures, Common Stock Shares	11,689,415	779,294
Debentures 2009 Series [Member]
Debt Conversion [Line Items]
Debentures, Face Value	134	134
Debentures, Fair Value	155	151
Debentures, Common Stock Shares	923,440	61,563
Debentures 2011 Series [Member]
Debt Conversion [Line Items]
Debentures, Face Value	852	852
Debentures, Fair Value	866	854
Debentures, Common Stock Shares	5,226,562	348,437
Debentures 2012 Series [Member]
Debt Conversion [Line Items]
Debentures, Face Value	972	972
Debentures, Fair Value	1,013	1,392
Debentures, Common Stock Shares	8,524,582	568,305
Debentures 2013 Series [Member]
Debt Conversion [Line Items]
Debentures, Face Value	34,211	34,211
Debentures, Fair Value	31,872	31,407
Debentures, Common Stock Shares	$ 192,394,516	$ 12,826,301