CONDENSED BALANCE SHEETS [Parenthetical] (USD $)	Jun. 30, 2013	Dec. 31, 2012
Convertible preferred stock, par value	$ 0.001	$ 0.001
Convertible preferred stock, shares authorized	6,000,000	6,000,000
Convertible preferred stock, shares issued	0	5,500,000
Convertible preferred stock, shares outstanding	0	5,500,000
Convertible preferred stock, liquidation preference		$ 24,000,000
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	122,140,718	36,761,864
Common stock, shares outstanding	122,140,718	36,761,864