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Net Loss Per Share Attributable to Common Stockholders (Tables) | 12 Months Ended
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Dec. 31, 2020
Earnings Per Share [Abstract] |
Schedule of Basic and Diluted Net Loss Per Common Share | Basic and diluted net loss per common share is calculated as follows (in thousands except share and per share amounts):
|  | Year Ended December 31, |
|  | 2020 |  |  | 2019 |
Net loss |  | $ | (27,531 | ) |  | $ | (37,037 | )
Cumulative dividends on convertible preferred stock |  |  | (7,189 | ) |  |  | (7,055 | )
Net loss attributable to common stockholders |  | $ | (34,720 | ) |  | $ | (44,092 | )
Net loss per common share—basic and diluted |  | $ | (5.25 | ) |  | $ | (33.41 | )
Weighted-average number of shares used in computing net loss per common share—basic and diluted |  |  | 6,618,445 |  |  |  | 1,319,912 |
Schedule of Anti-dilutive Securities Excluded from Calculation of Diluted Net Loss Per Share | The following outstanding potentially dilutive shares have been excluded from the calculation of diluted net loss per share due to their anti-dilutive effect:
|  | As of December 31, |
|  | 2020 |  |  | 2019 |
Convertible preferred stock |  |  | — |  |  |  | 117,809,883 |
Stock options to purchase common stock |  |  | 2,756,102 |  |  |  | 2,117,106 |
Restricted stock awards |  |  | 80,000 |  |  |  | — |
Warrants to purchase common stock |  |  | 27,759 |  |  |  | 27,759 |

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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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