Financing (Details 5) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Debt Conversion [Line Items]
Debentures, Face Value	$ 35,826	$ 35,845
Debentures, Fair Value	$ 40,567	$ 37,384
Debentures, Common Stock Shares	448,151,143	436,904,318
Debentures 2006 Series [Member]
Debt Conversion [Line Items]
Debentures, Face Value	$ 1,962	$ 1,961
Debentures, Fair Value	$ 2,213	$ 2,019
Debentures, Common Stock Shares	24,720,877	23,871,436
Debentures 2007 Series [Member]
Debt Conversion [Line Items]
Debentures, Face Value	$ 812	$ 814
Debentures, Fair Value	$ 1,075	$ 1,000
Debentures, Common Stock Shares	11,829,910	11,549,397
Debentures 2008 Series [Member]
Debt Conversion [Line Items]
Debentures, Face Value	$ 1,925	$ 1,925
Debentures, Fair Value	$ 2,117	$ 1,949
Debentures, Common Stock Shares	23,172,004	22,598,665
Debentures 2009 Series [Member]
Debt Conversion [Line Items]
Debentures, Face Value	$ 0	$ 7
Debentures, Fair Value	$ 30	$ 46
Debentures, Common Stock Shares	331,733	517,119
Debentures 2011 Series [Member]
Debt Conversion [Line Items]
Debentures, Face Value	$ 794	$ 785
Debentures, Fair Value	$ 894	$ 800
Debentures, Common Stock Shares	9,988,987	9,469,332
Debentures 2012 Series [Member]
Debt Conversion [Line Items]
Debentures, Face Value	$ 972	$ 972
Debentures, Fair Value	$ 1,093	$ 1,111
Debentures, Common Stock Shares	12,074,836	12,926,448
Debentures 2013 Series [Member]
Debt Conversion [Line Items]
Debentures, Face Value	$ 29,211	$ 29,211
Debentures, Fair Value	$ 32,991	$ 30,297
Debentures, Common Stock Shares	364,314,671	354,041,487
Debentures 2014 Series [Member]
Debt Conversion [Line Items]
Debentures, Face Value	$ 150	$ 170
Debentures, Fair Value	$ 154	$ 162
Debentures, Common Stock Shares	1,718,125	1,930,434