Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	5,000,000,000	5,000,000,000
Common stock, shares issued	4,984,827,279	2,106,035,882
Common stock, shares outstanding	4,984,827,279	2,106,035,882
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	4,816	4,840
Convertible preferred stock, shares outstanding	4,816	4,840
Convertible preferred stock, liquidation value (in dollars)	$ 4,816	$ 4,480
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
Convertible preferred stock, liquidation value (in dollars)	$ 348	$ 348