Financing (Details 5) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Debt Conversion [Line Items]
Debentures, Face Value	$ 35,845	$ 41,017
Debentures, Fair Value	37,384	38,250
Debentures, Common Stock Shares	436,904,318	15,619,639
Debentures 2006 Series [Member]
Debt Conversion [Line Items]
Debentures, Face Value	1,962	1,962
Debentures, Fair Value	2,019	2,008
Debentures, Common Stock Shares	23,871,436	819,019
Debentures 2007 Series [Member]
Debt Conversion [Line Items]
Debentures, Face Value	814	839
Debentures, Fair Value	1,000	533
Debentures, Common Stock Shares	11,549,397	216,720
Debentures 2008 Series [Member]
Debt Conversion [Line Items]
Debentures, Face Value	1,925	2,047
Debentures, Fair Value	1,949	1,905
Debentures, Common Stock Shares	22,598,665	779,294
Debentures 2009 Series [Member]
Debt Conversion [Line Items]
Debentures, Face Value	7	134
Debentures, Fair Value	46	151
Debentures, Common Stock Shares	517,119	61,563
Debentures 2010 Series [Member]
Debt Conversion [Line Items]
Debentures, Face Value		852
Debentures, Fair Value		854
Debentures, Common Stock Shares		348,437
Debentures 2011 Series [Member]
Debt Conversion [Line Items]
Debentures, Face Value	785	972
Debentures, Fair Value	800	1,392
Debentures, Common Stock Shares	9,469,332	568,305
Debentures 2012 Series [Member]
Debt Conversion [Line Items]
Debentures, Face Value	972	34,211
Debentures, Fair Value	1,111	31,407
Debentures, Common Stock Shares	12,926,448	12,826,301
Debentures 2013 Series [Member]
Debt Conversion [Line Items]
Debentures, Face Value	29,212
Debentures, Fair Value	30,298
Debentures, Common Stock Shares	354,041,487
Debentures 2014 Series [Member]
Debt Conversion [Line Items]
Debentures, Face Value	170
Debentures, Fair Value	$ 162
Debentures, Common Stock Shares	1,930,434