12. Stockholders' Equity

3 Months Ended

Mar. 31, 2015

Equity [Abstract]

12. Stockholders' Equity

Common Stock

The Company has authorized the issuance of up to 45,000,000 shares of common stock, all of which have been designated voting common stock, under its Amended and Restated Certificate of Incorporation.

Convertible Preferred Stock

The Company has authorized the issuance of up to 5,000,000 shares of preferred stock under the Company’s Amended and Restated Certificate of Incorporation.

Warrants

As of March 31, 2015 and December 31, 2014, the Company had no outstanding warrants to purchase common or preferred stock, but approximately 30,000 outstanding as of March 31, 2014.

Public Offerings of Common Stock

On September 25, 2013, our registration statement on Form S-1 for our initial public offering was declared effective by the Securities and Exchange Commission. The offering commenced on September 26, and the Company sold 3.6 million shares of its common stock in its initial public offering at a price of $10.00 per share, providing proceeds of $31.5 million, net of expenses and underwriting discounts and commissions. The Company’s initial public offering closed on October 1, 2013.

On March 19, 2014, the Company sold 2.0 million shares of its common stock in a secondary offering at a price of $24.25 per share, providing proceeds of $45.7 million, net of expenses and underwriting discounts and commissions. The Company’s sale of 1.6 million shares in the secondary offering closed on March 25, 2014 and the Company’s sale of an additional 0.4 million shares as a result of the underwriters’ exercise of their option to purchase additional shares closed on March 28, 2014.