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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2021
Accounting Policies [Abstract] |
Schedule of Potentially Dilutive Securities not Included in Calculation of Diluted Net Loss Per Share/Unit | Potentially dilutive securities not included in the calculation of diluted net loss per share/unit, because to do so would be anti-dilutive, are as follows (in common stock/unit equivalent shares; in thousands):
|  | December 31, |
|  | 2021 |  |  | 2020 |  |  | 2019 |
Convertible preferred stock |  |  | — |  |  |  | — |  |  |  | 17,666 |
Warrant to purchase convertible preferred stock |  |  | — |  |  |  | — |  |  |  | 8 |
Warrant to purchase common stock |  |  | — |  |  |  | — |  |  |  | 9 |
Common stock options issued and outstanding |  |  | 5,778 |  |  |  | 3,788 |  |  |  | 1,667 |
Common stock subject to repurchase or forfeiture |  |  | 15 |  |  |  | 69 |  |  |  | 195 |
ESPP shares pending issuance |  |  | 3 |  |  |  | 1 |  |  |  | — |
Total |  |  | 5,796 |  |  |  | 3,858 |  |  |  | 19,545 |

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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=124432515&loc=d3e3550-109257 + Details
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