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Marketable Securities (Tables)
 9 Months Ended
Sep. 30, 2022
Marketable Securities [Abstract]  
Summary of Marketable securities
Marketable securities consisted of the following as of September 30, 2022 and December 31, 2021 (in thousands):

 
  
September 30, 2022
 
 
  
Amortized
Cost
 
  
Gross
Unrealized
Gains
 
  
Gross
Unrealized
Losses
 
  
Fair
Value
 
Available-for-sale
securities, short-term
  
 
  
 
  
 
  
Corporate debt securities
   
$

 16,531
 
  
$

 —  
 
  
$

 (369
)
  
$

 16,162  
Asset-backed securities
      3,008
 
  
   —  
 
  
   (120
) 
  
   2,888  
U.S. treasury securities
  
 
 24,080
 
  
 
—  
 
  
 
 (476
)
  
 
 23,604
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
Total
available-for-sale
securities, short-term
  
 
 43,619
 
  
 
—  
 
  
 
 (965
)
  
 
 42,654
 
    
 
 
     
 
 
     
 
 
     
 
 
  
Total
available-for-sale
securities
    $ 43,619      $ —        $ (965 )    $ 42,654  
    
 
 
     
 
 
     
 
 
     
 
 
  

 
  
December 31, 2021
 
 
  
Amortized
Cost
 
  
Gross
Unrealized
Gains
 
  
Gross
Unrealized
Losses
 
  
Fair Value
 
Available-for-sale
securities, short-term
  
  
  
  
Commercial paper
    $ 47,939      $ —        $ —        $ 47,939  
Corporate debt securities
      7,992        —          (11 )       7,981  
Asset-backed securities
      16,177        —          (22 )       16,155  
    
 
 
     
 
 
     
 
 
     
 
 
  
Total
available-for-sale
securities, short-term
      72,108        —          (33 )       72,075  
Available-for-sale
securities, long-term
                                    
Corporate debt securities
      16,816        —          (103 )       16,713  
Asset-backed securities
      3,013        —          (25 )       2,988  
U.S. treasury securities
      11,988        —          (70 )       11,918  
    
 
 
     
 
 
     
 
 
     
 
 
  
Total
available-for-sale
securities, long-term
      31,817        —          (198 )       31,619  
    
 
 
     
 
 
     
 
 
     
 
 
  
Total
available-for-sale
securities
    $ 103,925      $ —        $ (231 )     $ 103,694  
    
 
 
     
 
 
     
 
 
     
 
 
  
As of September 30, 2022, the Company’s
available-for-sale
securities
were
all classified as short-term and mature in one year or less. Certain of the Company’s
available-for-sale
marketable securities
 that were
 in an unrealized loss position as of September 30, 2022 have been in a loss position for approximately twelve months; however unrealized losses on
available-for-sale
securities as of September 30, 2022 were not significant and were primarily due to changes in interest rates, including market credit spreads, and not due to increased credit risks associated with specific securities. Accordingly, no other-than-temporary impairment was recorded for the three and nine months ended September 30, 2022. The Company does not intend to sell these securities and it is not more likely than not that the Company will be required to sell the investments before recovery of their amortized cost bases, which may be at maturity.