Initial Public Offering	9 Months Ended
Sep. 30, 2014
Text Block [Abstract]
Initial Public Offering	(2) Initial Public Offering On June 18, 2014, the Company completed an initial public offering (an IPO) of 7,500,000 shares of its common stock at a public offering price of $11.00 per share. The Company received net proceeds of $74.7 million after deducting underwriting discounts and commissions of $4.3 million and other offering expenses of approximately $3.5 million. Upon the closing of the offering, all of the Company’s then-outstanding (i) warrants to purchase Series C preferred stock, (the “Series C warrants”) were subject to an automatic net cashless exercise, (ii) convertible preferred stock (including the shares of Series C preferred stock issued upon the automatic net cashless exercise of Series C warrants) automatically converted into 115,982 shares of common stock, and (iii) Convertible Notes (see note 9) and Senior Convertible Notes (see note 8) automatically converted into 15,319,034 shares of common stock. Prior to the closing of the offering, the Company completed a 1-for-824.7412544 reverse stock split of its common stock. All common shares and related per share amounts in the financial statements and notes have been adjusted retroactively to reflect the reverse stock split. Upon the closing of the IPO, the Company amended and restated its certificate of incorporation. The total number of shares of all classes of stock which the Company has the authority to issue is 130,000,000 shares, consisting of 125,000,000 shares of common stock, par value $0.00001 per share (the common stock) and 5,000,000 shares of preferred stock, par value $0.00001 per share (the preferred stock). *2014 Employee, Director and Consultant Equity Incentive Plan* Upon completion of the IPO, the Company adopted the 2014 Employee, Director and Consultant Equity Incentive Plan (the 2014 Equity Plan). Under the 2014 Equity Plan, the Company may grant incentive stock options, non-qualified stock options, restricted stock, unrestricted stock and other stock-based awards. Stock options under the plan are to be granted with an exercise price not less than the fair market value of the Company’s common stock at the date of grant.

(2) Initial Public Offering

On June 18, 2014, the Company completed an initial public offering (an IPO) of 7,500,000 shares of its common stock at a public offering price of $11.00 per share. The Company received net proceeds of $74.7 million after deducting underwriting discounts and commissions of $4.3 million and other offering expenses of approximately $3.5 million. Upon the closing of the offering, all of the Company’s then-outstanding (i) warrants to purchase Series C preferred stock, (the “Series C warrants”) were subject to an automatic net cashless exercise, (ii) convertible preferred stock (including the shares of Series C preferred stock issued upon the automatic net cashless exercise of Series C warrants) automatically converted into 115,982 shares of common stock, and (iii) Convertible Notes (see note 9) and Senior Convertible Notes (see note 8) automatically converted into 15,319,034 shares of common stock.

Prior to the closing of the offering, the Company completed a 1-for-824.7412544 reverse stock split of its common stock. All common shares and related per share amounts in the financial statements and notes have been adjusted retroactively to reflect the reverse stock split.

Upon the closing of the IPO, the Company amended and restated its certificate of incorporation. The total number of shares of all classes of stock which the Company has the authority to issue is 130,000,000 shares, consisting of 125,000,000 shares of common stock, par value $0.00001 per share (the common stock) and 5,000,000 shares of preferred stock, par value $0.00001 per share (the preferred stock).

2014 Employee, Director and Consultant Equity Incentive Plan

Upon completion of the IPO, the Company adopted the 2014 Employee, Director and Consultant Equity Incentive Plan (the 2014 Equity Plan). Under the 2014 Equity Plan, the Company may grant incentive stock options, non-qualified stock options, restricted stock, unrestricted stock and other stock-based awards. Stock options under the plan are to be granted with an exercise price not less than the fair market value of the Company’s common stock at the date of grant.