Financing (Details 4) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Debt Conversion [Line Items]
Gain (loss) from change in fair value of derivative liability	$ (15)	$ 107	$ (10)	$ 244
Series C Convertible Preferred Stock [Member]
Debt Conversion [Line Items]
Gain (loss) from change in fair value of derivative liability	(14)	100	(10)	228
Series D Convertible Preferred Stock [Member]
Debt Conversion [Line Items]
Gain (loss) from change in fair value of derivative liability	(1)	7	0	16
Debentures 2006 Series [Member]
Debt Conversion [Line Items]
Gain (loss) from change in fair value of derivative liability	$ 0	$ 0	$ 0	$ 0