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Marketable Securities (Tables)
 3 Months Ended
Mar. 31, 2022
Investments Debt And Equity Securities [Abstract]  
Summary of Amortized Cost Gross Unrealized Holding Gains or Losses and Fair Value of Marketable Securities The amortized cost, gross unrealized holding gains or losses, and fair value of the Company’s marketable securities by major security type are summarized in the table below (in thousands):

 

 

March 31, 2022

 

 

 

Amortized

Cost Basis

 

 

Unrealized

Gains

 

 

Unrealized

Losses

 

 

Fair

Value

 

Available-for-sale securities

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

U.S. treasuries classified as marketable securities

 

$

167,352

 

 

$

—

 

 

$

(313

)

 

$

167,039

 

Total available-for-sale securities

 

$

167,352

 

 

$

—

 

 

$

(313

)

 

$

167,039