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Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit) (Parenthetical) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Preferred stock purchase right liability |  | $ 1,615
Convertible Preferred Stock |  |
Stock issuance costs | $ 95 | 430
Preferred stock purchase right liability |  | $ 8,973
Common Stock |  |
Discounts and offering costs | $ 28,001 |

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