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Marketable Securities (Tables)
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Marketable Securities [Abstract]    
Schedule of Available-for-sale Marketable Securities
Available-for-sale
marketable securities were as follows (in thousands):
 
    
March 31, 2022
 
    
Amortized
Cost
    
Unrealized
Gains
    
Unrealized
Losses
    
Fair
Value
 
Commercial paper
   $ 50,904      $      $      $ 50,904  
Corporate debt
     14,814        1        (18      14,797  
U.S. government agency
     15,081               (20      15,061  
Asset-backed securities
     3,013               (6      3,007  
  
 
 
    
 
 
    
 
 
    
 
 
 
Total
   $ 83,812      $ 1      $ (44    $ 83,769  
  
 
 
    
 
 
    
 
 
    
 
 
 
 
    
December 31, 2021 (1)
 
    
Amortized
Cost
    
Unrealized
Gains
    
Unrealized
Losses
    
Fair
Value
 
Commercial paper
   $ 43,969      $      $      $ 43,969  
Corporate debt
     17,084               (12      17,072  
U.S. government agency
     5,056               (3      5,053  
Asset-backed securities
     7,695               (5      7,690  
  
 
 
    
 
 
    
 
 
    
 
 
 
Total
   $ 73,804      $      $ (20    $ 73,784  
  
 
 
    
 
 
    
 
 
    
 
 
 
 
(1)
These items have been reclassified to conform to current period presentation.
Available-for-sale
marketable securities, which consisted entirely of corporate bonds, were as follows (in thousands):
 
    
December 31, 2021
 
Amortized costs
   $ 73,804  
Gross unrealized gains
      
Gross unrealized loss
     (20
  
 
 
 
Fair value
   $ 73,784