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Stockholders' Equity | 6 Months Ended
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Jun. 30, 2020
Equity [Abstract] |
Stockholders' Equity | Stockholders’ Equity Preferred Stock As of June 30, 2020 and December 31, 2019, the Company had 10,000,000 shares of preferred stock, par value $0.0001 authorized and no shares issued and outstanding. Common Stock As of June 30, 2020 and December 31, 2019, the Company had authorized 200,000,000 shares of common stock, par value $0.0001. As of June 30, 2020 and December 31, 2019, the Company had 87,206,346 shares and 86,069,263 shares issued and outstanding, respectively. The holders of shares of the Company’s common stock are entitled to one vote per share on all matters to be voted upon by the Company’s stockholders and there are no cumulative rights. Subject to preferences that may be applicable to any outstanding preferred stock, the holders of shares of the Company’s common stock are entitled to receive ratably any dividends that may be declared from time to time by the Company’s Board out of funds legally available for that purpose. In the event of the Company’s liquidation, dissolution or winding up, the holders of shares of the Company’s common stock are entitled to share ratably in all assets remaining after payment of liabilities, subject to prior distribution rights of preferred stock then outstanding. The Company’s common stock has no preemptive or conversion rights or other subscription rights. There are no redemption or sinking fund provisions applicable to the Company’s common stock. The outstanding shares of the Company’s common stock are fully paid and non-assessable. December 2019 Offering On December 23, 2019, the Company sold 10,000,000 shares of its common stock at the public offering price of $2.75 per share in an underwritten public offering, for gross proceeds of $27,500 and estimated net proceeds of $25,344 after deducting underwriting discounts and commission and other offering expenses payable by the Company (the “December 2019 Offering”). In addition, the Company granted the underwriters a 30-day option to purchase an additional 1,500,000 shares of common stock offered in the common stock offering. On January 6, 2020, the underwriters partially exercised the option to purchase an additional 1,081,184 shares of common stock at the public offering price of $2.75 per share for additional gross proceeds of $2,973 and net proceeds of $2,766 after deducting underwriting discounts and commission and other offering expenses. The shares sold in the December 2019 Offering were sold pursuant to a registration statement on Form S-3 that was declared effective by the SEC on July 24, 2019. Common Stock Warrants As of June 30 2020, warrants to purchase 413,320 shares of common stock at a price of $3.00 per share remain outstanding. The Warrants expire as follows: 163,174 warrants expire on March 27, 2021; 132,884 expire on April 28, 2021; and 117,262 expire on May 3, 2021. The Warrants are classified as a liability which is remeasured each period at fair value. See Note 12, Fair Value Measurements for more information on the fair value of the common stock warrant liability. Accumulated Other Comprehensive Income (Loss) The following table summarizes the changes in each component of accumulated other comprehensive income (loss), net of tax, for 2020:
|  | Unrealized gains (losses) on short-term investments |  | Total
Balance at December 31, 2019 |  | $ | (27) |  |  | $ | (27) |
Other comprehensive income (loss) before reclassifications |  | 10 |  |  | 10 |
Net current period other comprehensive income |  | 10 |  |  | 10 |
Balance at March 31, 2020 |  | $ | (17) |  |  | $ | (17) |
Other comprehensive income (loss) before reclassifications |  | 352 |  |  | 352 |
Net losses (gains) reclassified from accumulated other comprehensive loss |  | 3 |  |  | 3 |
Net current period other comprehensive income |  | 355 |  |  | 355 |
Balance at June 30, 2020 |  | $ | 338 |  |  | $ | 338 |
The net loss reclassified from accumulated other comprehensive loss resulted from sales of available-for-sale securities prior to maturity. The gross realized gains and gross realized losses of these sales were $23 and $6, respectively, for the three months ended June 30, 2020. The basis on which the cost of the securities was determined was specific identification. Proceeds related to these sales were $9,404.

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(e)(1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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