Condensed Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2014	Dec. 31, 2013
Convertible preferred stock, par value	$ 0.0001	$ 0.0001
Convertible preferred stock, shares authorized	0	108,829,748
Convertible preferred stock, shares issued	0	11,517,222
Convertible preferred stock, shares outstanding	0	11,517,222
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	5,000,000	0
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	300,000,000	130,360,121
Common stock, shares issued	18,335,620	1,225,481
Common stock, shares outstanding	18,335,620	1,225,481