Convertible Preferred Stock, Common Stock and Stockholders' Equity (Deficit) - Summary of Convertible Preferred Stock Authorized, Issued and Outstanding (Details)
$ / shares in Units, $ in Thousands
Dec. 31, 2020
USD ($)
$ / shares
shares
Schedule Of Convertible Preferred Stock [Line Items]  
Shares Authorized | shares 113,419,184
Shares Issued and Outstanding | shares 107,592,801
Net Carrying Value | $ $ 137,497
Liquidation Preference | $ $ 137,876
Series Seed Convertible Preferred Stock [Member]  
Schedule Of Convertible Preferred Stock [Line Items]  
Shares Authorized | shares 18,233,848
Shares Issued and Outstanding | shares 17,062,642
Issuance Price Per Share | $ / shares $ 0.0649
Net Carrying Value | $ $ 1,107
Liquidation Preference | $ $ 1,107
Series A Convertible Preferred Stock [Member]  
Schedule Of Convertible Preferred Stock [Line Items]  
Shares Authorized | shares 28,725,920
Shares Issued and Outstanding | shares 27,354,298
Issuance Price Per Share | $ / shares $ 0.3107
Net Carrying Value | $ $ 8,437
Liquidation Preference | $ $ 8,500
Series B Convertible Preferred Stock [Member]  
Schedule Of Convertible Preferred Stock [Line Items]  
Shares Authorized | shares 34,391,480
Shares Issued and Outstanding | shares 32,749,335
Issuance Price Per Share | $ / shares $ 0.4635
Net Carrying Value | $ $ 15,096
Liquidation Preference | $ $ 15,180
Series C Convertible Preferred Stock [Member]  
Schedule Of Convertible Preferred Stock [Line Items]  
Shares Authorized | shares 14,468,290
Shares Issued and Outstanding | shares 13,777,449
Issuance Price Per Share | $ / shares $ 2.1775
Net Carrying Value | $ $ 29,881
Liquidation Preference | $ $ 30,000
Series D Convertible Preferred Stock [Member]  
Schedule Of Convertible Preferred Stock [Line Items]  
Shares Authorized | shares 17,599,646
Shares Issued and Outstanding | shares 16,649,077
Issuance Price Per Share | $ / shares $ 4.9906
Net Carrying Value | $ $ 82,976
Liquidation Preference | $ $ 83,089