Convertible Preferred Stock	12 Months Ended
Dec. 31, 2015
Equity [Abstract]
Convertible Preferred Stock	Convertible Preferred Stock On October 30, 2013, immediately prior to the closing of the Company’s IPO, all outstanding shares of convertible preferred stock automatically were converted into an aggregate of 12,120,531 shares of common stock. As of December 31, 2015 and December 31, 2014, no convertible preferred stock was authorized, issued or outstanding. Carrying Value On February 23, 2011, the Company received $23.8 million in proceeds from the issuance of its Series B Convertible Preferred Stock, net of $1.2 million of transaction costs. The convertible preferred stock was originally recorded at the net proceeds received by the Company at issuance. The difference between the net proceeds and the total redemption price was being accreted on a straight-line basis over the period from issuance until the earliest redemption date and was accreted to the convertible preferred stock capital account through the completion of the IPO. Accretion amounted to $210,000 for the year ended December 31, 2013. On February 23, 2011, the Company issued the Series A-4 Convertible Preferred Stock in connection with the conversion of a series of convertible notes. The issuance was recorded at fair value. The difference between stated and fair value of $1.3 million was being accreted on a straight-line basis of the period from February 23, 2011 until the earliest redemption date and was accreted to the Series A-4 Convertible Preferred Stock capital account through the completion of the IPO. Accretion amounted to $240,000 for the year ended December 31, 2013. The Company determined that the straight-line method approximated the effective interest method.

Convertible Preferred Stock

On October 30, 2013, immediately prior to the closing of the Company’s IPO, all outstanding shares of convertible preferred stock automatically were converted into an aggregate of 12,120,531 shares of common stock. As of December 31, 2015 and December 31, 2014, no convertible preferred stock was authorized, issued or outstanding.

Carrying Value

On February 23, 2011, the Company received $23.8 million in proceeds from the issuance of its Series B Convertible Preferred Stock, net of $1.2 million of transaction costs. The convertible preferred stock was originally recorded at the net proceeds received by the Company at issuance. The difference between the net proceeds and the total redemption price was being accreted on a straight-line basis over the period from issuance until the earliest redemption date and was accreted to the convertible preferred stock capital account through the completion of the IPO. Accretion amounted to $210,000 for the year ended December 31, 2013.

On February 23, 2011, the Company issued the Series A-4 Convertible Preferred Stock in connection with the conversion of a series of convertible notes. The issuance was recorded at fair value. The difference between stated and fair value of $1.3 million was being accreted on a straight-line basis of the period from February 23, 2011 until the earliest redemption date and was accreted to the Series A-4 Convertible Preferred Stock capital account through the completion of the IPO. Accretion amounted to $240,000 for the year ended December 31, 2013. The Company determined that the straight-line method approximated the effective interest method.