Convertible Preferred Stock (Tables)

9 Months Ended

Sep. 30, 2015

Equity [Abstract]

Summary of Convertible Preferred Stock

The following table summarizes the Company’s convertible preferred stock balances as of September 30, 2015 and December 31, 2014 (in thousands, except share and per share amounts):

	September 30, 2015		December 31, 2014
Series A, noncumulative convertible preferred stock, par value $0.0001;    zero and 1,043,011 shares authorized at September 30, 2015 and December 31,    2014, respectively;zero and 994,866 shares issued and outstanding at    September 30, 2015 and December 31, 2014, respectively;liquidation value of    $0 and $31,000 at September 30, 2015 and December 31, 2014, respectively		—		30,908
Series B, noncumulative convertible preferred stock, par value $0.0001; zero and    5,133,477 shares authorized at September 30, 2015 and December 31, 2014,    respectively; zero and 2,151,722 shares issued and outstanding at September 30,    2015 and December 31, 2014, respectively; liquidation value of $0 and $54,600    at September 30, 2015 and December 31, 2014, respectively		—		31,074