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Net Loss Per Share of Common Stock (Tables) | 3 Months Ended
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Mar. 31, 2019
Earnings Per Share [Abstract] |
Computation of Basic and Diluted Loss Per Share | The following table sets forth the computation of basic and diluted loss per share for common stockholders:
| Three Months Ended |
| March 31, |
| 2019 |  |  | 2018 |
Net loss | $ | (15,827,200 | ) |  | $ | (12,418,263 | )
Weighted average shares of common stock outstanding |  | 38,968,110 |  |  |  | 38,749,343 |
Net loss per share of common stock – basic and diluted | $ | (0.41 | ) |  | $ | (0.32 | )
Securities Excluded from Calculation of Weighted Average Shares Outstanding as their Effect is Antidilutive | The following securities outstanding at March 31, 2019 and 2018 have been excluded from the calculation of weighted average shares outstanding as their effect on the calculation of loss per share is antidilutive:
| March 31, |
| 2019 |  |  | 2018 |
Common stock options |  | 8,378,672 |  |  |  | 6,555,150 |
Restricted stock units |  | 127,300 |  |  |  | 185,950 |
Common stock warrants |  | 40,790 |  |  |  | 40,790 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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