Financing (Details 8) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Debt Conversion [Line Items]
Gain (loss) from change in fair value of derivative liability - warrants	$ 2	$ 38	$ 1	$ 618
Series D Convertible Preferred Stock [Member]
Debt Conversion [Line Items]
Gain (loss) from change in fair value of derivative liability - warrants	0	7	0	108
Warrants With Debenture Attached Series 2008 [Member]
Debt Conversion [Line Items]
Gain (loss) from change in fair value of derivative liability - warrants	2	18	1	294
Warrants With Debenture Attached Series 2010 [Member]
Debt Conversion [Line Items]
Gain (loss) from change in fair value of derivative liability - warrants	0	6	0	101
Warrants With Debenture Attached Series 2011 [Member]
Debt Conversion [Line Items]
Gain (loss) from change in fair value of derivative liability - warrants	0	4	0	72
Warrants With Debenture Attached Series 2012 [Member]
Debt Conversion [Line Items]
Gain (loss) from change in fair value of derivative liability - warrants	$ 0	$ 3	$ 0	$ 43