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Simple Agreements for Future Equity (SAFE) (Details) - USD ($) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Dec. 02, 2020 | Jun. 24, 2019 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items] |  |  |  |  |
Charge for the increase in fair value |  |  |  |  | $ 24,200
Amount settled in cash |  |  | $ 0 | $ 0 | $ 5,609
Series A Convertible Preferred Stock |  |  |  |  |
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items] |  |  |  |  |
Conversion of SAFE into Series A convertible preferred stock for cash, net of issuance costs (in shares) |  |  |  |  | 68,877,417
Series A Convertible Preferred Stock | Preferred Stock |  |  |  |  |
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items] |  |  |  |  |
Conversion of SAFE into Series A convertible preferred stock for cash, net of issuance costs (in shares) |  | 68,877,417 |  |  |
Class A Common Stock | Common Stock |  |  |  |  |
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items] |  |  |  |  |
Conversion of SAFE into Series A common stock or Issuance of Class A common stock upon exercise of warrants (in shares) | 1,466,155 | 3,612,062 | 15,000,000 | 1,466,155 | 3,612,062

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