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Marketable Securities (Tables)
 3 Months Ended
Mar. 31, 2024
Marketable Securities [Abstract]  
Schedule of Marketable Securities The following is summary of marketable securities that the Company measures at fair value (in thousands):
   Fair Value at March 31, 2024 
   Level 1   Level 2   Level 3   Total 
                 
Corporate bonds  $
-
   $351   $
-
   $351 
Money market funds(1)   796    
-
    
-
    796 
Accrued income   13    
-
    
-
    13 
Total marketable securities  $809   $351   $
-
   $1,160 
(1) Money market funds are included in cash and cash equivalents in the condensed balance sheet.
   Fair Value at December 31, 2023 
   Level 1   Level 2   Level 3   Total 
                 
Corporate bonds  $
-
   $412   $
-
   $412 
Money market funds(1)   3,948    
-
    
-
    3,948 
Accrued income   16    
-
    
-
    16 
Total marketable securities  $3,964   $412   $
-
   $4,376