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Warrants (Tables)
 12 Months Ended
Dec. 31, 2021
Equity [Abstract]  
Schedule of Convertible Redeemable Preferred Stock Warrants
The following table summarizes the activity of the redeemable convertible preferred stock warrants since December 31, 2020:
Issuance
Date
Expiration
Date
Exercise PriceWarrants Outstanding at December 31,
2020		Warrants Exercised in The Year Ended December 31, 2021Warrants Outstanding at December 31,
2021
Series A-120125/14/2022$0.17 151,640 151,640 — 
Series C201410/10/20240.70 562,241 562,241 — 
Series C20161/12/2026— 968,966 968,966 — 
 Total1,682,847 1,682,847 — 
The following table represents the activity of the redeemable convertible preferred stock warrant liability (in thousands):
Fair Value
Balance at December 31, 2019$7,021 
Change in fair value12,714 
Balance at January 1, 202119,735 
Change in fair value18,930 
Exercise of warrants(38,665)
Balance at December 31, 2021$—