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Earnings per Share | 12 Months Ended
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Dec. 31, 2020
Earnings Per Share [Abstract] |
Earnings per Share | Note 15 – Earnings per Share Excluded from determination of diluted net loss attributable to common stockholders for the periods presented because inclusion would be anti-dilutive are the instruments below, the terms of which are described in further detail in Note 14 – Share Based Compensation. The potentially dilutive securities as of December 31, 2020 and 2019 primarily represent the shares subject to future issuance under stock options awards, warrants and RSUs and would be subject to the treasury stock method when dilutive. The number of common shares that convertible debt was assumed to convert to was based on the Company’s estimated common stock price as of December 31, 2019, as determined by the Company’s Board of Directors with assistance from a valuation firm.
|  | Year Ended December 31 |
|  | 2020 |  |  | 2019 |
Numerator |  |  |  |  |  |  |  |
Net loss attributable to common stockholders |  | $ | (31,350 | ) |  | $ | (30,726 | )
Denominator |  |  |  |  |  |  |  |
Weighted-average shares outstanding used in computing net loss per share, basic and diluted |  |  | 4,838 |  |  |  | 242 |
Net loss per share, basic and diluted |  | $ | (6.48 | ) |  | $ | (126.97 | )
The following outstanding common stock equivalents were excluded from diluted net loss attributable to common stockholders for the periods presented because inclusion would be anti-dilutive (in thousands):
|  | Year Ended December 31 |
|  | 2020 |  |  | 2019 |
Options to purchase common stock |  |  | 2,495 |  |  |  | 2,104 |
Convertible preferred stock |  |  | — |  |  |  | 119,257 |
Warrants |  |  | 103 |  |  |  | 1,538 |
Restricted stock units |  |  | 79 |  |  |  | 26 |
Convertible debt |  |  | — |  |  |  | 21,131 |
Total |  |  | 2,677 |  |  |  | 144,056 |

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