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Non-Marketable Equity Securities (Tables)
 12 Months Ended
Dec. 31, 2021
Investments Debt And Equity Securities [Abstract]  
Summary of Carrying Value of the Non-marketable Equity Securities The carrying value of the non-marketable equity securities as of December 31, 2021, is summarized below (in thousands).

 

Initial cost as of April 26, 2021

 

$

1,759

 

Change in fair value

 

 

(892

)

Balance as of December 31, 2021

 

$

867