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Net Loss Per Share (Tables) | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share [Abstract] |
Computation of Basic and Diluted Net Loss Per Share | The following table sets forth the computation of basic and diluted net loss per share (in thousands, except share and per-share data):
| Three Months Ended March 31, |  |  |
| 2021 |  | 2020 |  |  |  |  |  |  |  |  |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net loss attributable to common stockholders | $ | (24,597) |  |  | $ | (19,620) |  |  |  |  |  |  |  |  |  |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average common shares and pre-funded warrants outstanding—basic and diluted | 110,742,150 |  |  | 94,723,513 |  |  |  |  |  |  |  |  |  |
Net loss per share attributable to common stockholders —basic and diluted | $ | (0.22) |  |  | $ | (0.21) |  |  |  |  |  |  |  |  |  |
Schedule of Potential Common Shares Issuable Upon Conversion of Warrants | Potential dilutive common share equivalents consist of the following:
| March 31, |
| 2021 |  | 2020 |  |  |  |  |
Stock options to purchase common stock | 10,187,394 |  |  | 7,745,936 |  |  |  |  |  |
Unvested restricted stock units | 544,313 |  |  | 170,313 |  |  |  |  |  |
Warrants to purchase common stock | 12,378,016 |  |  | 23,084,120 |  |  |  |  |  |
Total | 23,109,723 |  |  | 31,000,369 |  |  |  |  |  |

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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://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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