v2.4.0.8
Redeemable Convertible Preferred Stock (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
0 Months Ended 9 Months Ended 1 Months Ended 9 Months Ended 1 Months Ended 9 Months Ended 1 Months Ended 9 Months Ended 1 Months Ended 9 Months Ended
Apr. 02, 2014
Sep. 30, 2014
Jun. 30, 2009
Series A
Sep. 30, 2014
Series A
Dec. 31, 2013
Series A
Feb. 28, 2010
Series B
Sep. 30, 2014
Series B
Dec. 31, 2013
Series B
Mar. 31, 2011
Series C
Sep. 30, 2014
Series C
Dec. 31, 2013
Series C
Jan. 31, 2013
Series D
Mar. 31, 2012
Series D
Sep. 30, 2014
Series D
Dec. 31, 2013
Series D
Issuances of redeemable convertible preferred stock                              
Purchase Price per Share (in dollars per share) $ 13.00   $ 1.27     $ 4.46     $ 7.34     $ 7.81 $ 7.81    
Number of Shares     10,033,976 0 10,033,976 5,057,901 0 5,057,901 4,429,601 0 4,429,601 639,828 3,339,902 0 3,979,730
Conversion Price per Share (in dollars per share)     $ 1.27     $ 4.46     $ 7.34     $ 7.81 $ 7.81    
Summary of activity for the Preferred Stock issued and outstanding                              
Balance at the beginning of the period   $ 98,047   $ 12,384     $ 22,210     $ 32,405       $ 31,048  
Accretion of issuance costs on redeemable convertible preferred stock   89   36     36     12       5  
Conversion of preferred stock into common stock   $ (98,136)   $ (12,420)     $ (22,246)     $ (32,417)       $ (31,053)  
Redeemable convertible preferred stock converted into shares of common stock 23,501,208