Consolidated Balance Sheets [Parenthetical] (USD $)	Sep. 30, 2013	Dec. 31, 2012
Stockholders Equity
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	225,000,000	113,000,000
Common stock, shares issued	167,504,447	4,674,495
Common stock, shares outstanding	167,504,447	4,674,495
Series A Redeemable Convertible Preferred Stock [Member]
Stockholders Equity
Redeemable convertible preferred stock, par value (in dollars per share)		$ 0.001
Redeemable convertible preferred stock, shares authorized		5,734,402
Redeemable convertible preferred stock, shares issued		5,696,261
Redeemable convertible preferred stock, shares outstanding		5,696,261
Series B Redeemable Convertible Preferred Stock [Member]
Stockholders Equity
Redeemable convertible preferred stock, par value (in dollars per share)		$ 0.001
Redeemable convertible preferred stock, shares authorized		11,504,298
Redeemable convertible preferred stock, shares issued		11,489,972
Redeemable convertible preferred stock, shares outstanding		11,489,972
Series B-1 Redeemable Convertible Preferred Stock [Member]
Stockholders Equity
Redeemable convertible preferred stock, par value (in dollars per share)		$ 0.001
Redeemable convertible preferred stock, shares authorized		48,454,545
Redeemable convertible preferred stock, shares issued		45,998,220
Redeemable convertible preferred stock, shares outstanding		45,998,220
Series B Convertible Preferred Stock [Member]
Stockholders Equity
Preferred stock, par value (in dollars per share)	$ 0.01
Preferred stock, shares authorized	25,000,000
Preferred stock, shares issued	7,569,704.4
Preferred stock, shares outstanding	7,569,704.4