Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Common stock, shares authorized	7,500,000,000	7,500,000,000
Common stock, shares issued	5,088,415,155	4,166,142,620
Common stock, shares outstanding	5,088,415,155	4,166,142,620
Treasury stock, shares	2,012	2,012
Series C Convertible Preferred Stock [Member]
Convertible preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Convertible preferred stock, shares authorized	27,000	27,000
Convertible preferred stock, shares issued	4,317	4,332
Convertible preferred stock, shares outstanding	4,317	4,332
Preferred Stock, Liquidation Preference, Value	$ 4,317	$ 4,332
Series D Convertible Preferred Stock [Member]
Convertible preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Convertible preferred stock, shares authorized	25,000	25,000
Convertible preferred stock, shares issued	3,481	3,481
Convertible preferred stock, shares outstanding	3,481	3,481
Preferred Stock, Liquidation Preference, Value	$ 348	$ 348