Stockholders' Equity

3 Months Ended

Mar. 31, 2019

Stockholders' Equity Note [Abstract]

Stockholders' Equity

Stockholders’ Equity

Common Stock

On October 11, 2016, the Company completed an underwritten public offering of 10,000,000 shares of its common stock and accompanying warrants to purchase 10,000,000 shares of common stock at a purchase price of $3.00 per unit, comprising of one share of common stock and one warrant. The change in fair value of the warrant liabilities for the three months ended March 31, 2018, resulted in a gain of approximately $9.8 million, which has been recognized in the accompanying condensed consolidated statements of comprehensive loss. During 2018, all of the warrants were exercised. As of March 31, 2019 and December 31, 2018, there were no warrants outstanding.

Treasury Stock

During the three months ended March 31, 2019, there were 84,896 shares received in connection with a non-cash equity transaction related to the Company's Plan.