Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Common stock, shares authorized	7,500,000,000	7,500,000,000
Common stock, shares issued	4,846,748,489	4,166,142,620
Common stock, shares outstanding	4,846,748,489	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	348	3,481
Convertible preferred stock, shares outstanding	348	3,481
Preferred Stock, Liquidation Preference, Value	$ 348	$ 348