CONSOLIDATED BALANCE SHEETS [Parenthetical] (USD $)	Dec. 31, 2012	Dec. 31, 2011
Cash, dedicated for clinical trials and related matters (in dollars)	$ 1,524,000
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, authorized	160,000,000	160,000,000
Common stock, issued	93,808,386	55,536,292
Common stock, outstanding	93,808,386	55,536,292
Series A Convertible Preferred Stock [Member]
Convertible preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Convertible preferred stock, authorized	5,000,000	5,000,000
Convertible preferred stock, issued	0	97,663
Convertible preferred stock, outstanding	0	97,663
Preferred stock, liquidation preference, value (in dollars)	0	97,663
Series B Convertible Preferred Stock [Member]
Convertible preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Convertible preferred stock, authorized	5,000,000	5,000,000
Convertible preferred stock, issued	0	65,784
Convertible preferred stock, outstanding	0	65,784
Preferred stock, liquidation preference, value (in dollars)	0	65,784
Series D Convertible Preferred Stock [Member]
Convertible preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Convertible preferred stock, authorized	2,000,000	2,000,000
Convertible preferred stock, issued	0	3,300
Convertible preferred stock, outstanding	0	3,300
Preferred stock, liquidation preference, value (in dollars)	$ 0	$ 3,300,000