Stockholders' Equity |
3 Months Ended |
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Mar. 31, 2018 | |
| Equity [Abstract] | |
| Stockholders' Equity |
Stockholders´ Equity
The Company had 53,974,184 shares of common stock and 2,907 shares of preferred stock outstanding as of March 31, 2018, both with a par value of $0.001 per share. During the three months ended March 31, 2018, 2,056 shares of preferred stock were converted into 2,056,000 shares of common stock. During the three months ended March 31, 2018 the Company issued 512,960 shares of common stock upon option exercises, resulting in cash proceeds of $0.8 million. No options were exercised during the corresponding 2017 period. During the three months ended March 31, 2018 the Company issued 63,162 shares of common stock upon exercise of warrants, resulting in cash proceeds of $0.1 million. No warrants were exercised during the corresponding 2017 period.
Underwritten Public Offering
In February 2018, the Company completed an underwritten public offering of its common stock in which it sold 6,325,000 shares of common stock, including the exercise in full by the underwriters of their option to purchase an additional 825,000 shares of common stock, to the public at a price of $8.00 per share (the "2018 Offering"). The 2018 Offering was completed under the Company's shelf registration statement that was filed on Form S-3 and declared effective by the SEC on August 3, 2016. Net proceeds of the 2018 Offering, after deducting the underwriting discounts and commissions, were $47.6 million, excluding offering expenses of approximately $0.4 million incurred by the Company.
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