Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Series A Convertible Preferred Stock [Member]	Dec. 31, 2012 Series A Convertible Preferred Stock [Member]	Dec. 31, 2013 Series B Convertible Preferred Stock [Member]	Dec. 31, 2012 Series B Convertible Preferred Stock [Member]	Dec. 31, 2013 Series C Convertible Preferred Stock [Member]	Dec. 31, 2012 Series C Convertible Preferred Stock [Member]
Preferred stock, par value	$ 0.001	$ 0.001	$ 0.001	$ 0.001	$ 0.001	$ 0.001	$ 0.001	$ 0.001
Preferred stock, shares authorized	25,000,000	0	0	33,188,889	0	5,190,551	0	15,882,389
Preferred stock, shares issued	0	0	0	33,188,889	0	5,190,551	0	15,882,389
Preferred stock, shares outstanding	0	0	0	33,188,889	0	5,190,551	0	15,882,389
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	125,000,000	78,300,000
Common stock, shares issued	31,202,542	3,616,101
Common stock, shares outstanding	31,202,542	3,616,101