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Fair Value Measurements (Tables)
 12 Months Ended
Dec. 31, 2021
Fair Value Disclosures [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis
The following table presents the Company’s assets and liabilities that are measured at fair value on a recurring basis:

Fair Value Measurements as of December 31, 2021
Level 1Level 2Level 3Total
Assets:
Available-for-Sale Investments
Asset backed securities
$— $111,552 $— $111,552 
Certificates of deposits— 6,002 — 6,002 
Corporate notes and bonds— 206,989 — 206,989 
Commercial paper— 109,391 — 109,391 
Foreign government securities— 8,181 — 8,181 
US Government Securities86,787 — — 86,787 
Total assets
$86,787 $442,114 $— $528,902 
Liabilities:
Common Stock Warrants
Public Common Stock Warrants
$— $— $— $— 
Private Common Stock Warrants
— — 6,293 6,293 
Total liabilities
$— $— $6,293 $6,293 
Fair Value Measurements as of December 31, 2020
Level 1Level 2Level 3Total
Liabilities:
Common Stock Warrants
Public Common Stock Warrants
$124,545 $— $— $124,545 
Private Common Stock Warrants
— — 53,687 53,687 
Total liabilities
$124,545 $— $53,687 $178,232 
Reconciliation of Level 3 Liabilities The following is a rollforward of balances for Private Warrants:
Private Warrants
Balance at December 31, 2020$53,687 
Private warrant shares exercised(3,706)
Fair market value adjustment(43,688)
Balance as of December 31, 2021$6,293 
Summary of Level 3 Inputs and Valuation Techniques
The table below reflects the fair value measurement of the Company’s Level 3 inputs as of September 10, 2020, the date on which the Redeemable Convertible Series E preferred forward contract liability was settled, prior to giving effect to the FEAC Business Combination:

Fair Value as of September 10, 2020Valuation TechniqueUnobservable Input DescriptionInput
Redeemable Convertible Series E preferred stock forward contract liability$21,688 Discounted cash flowFair value of Redeemable Convertible Series E preferred stock$9.17