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Fair Value Measurements (Tables)
3 Months Ended
Mar. 31, 2022
Fair Value Disclosures [Abstract]  
Assets measured at fair value on a recurring basis are as follows (in thousands):

Assets measured at fair value on a recurring basis are as follows (in thousands):

 

   Total   Level 1   Level 2   Level 3 
March 31, 2022 (unaudited):                    
Money market funds  $59,461   $59,461   $   $ 
December 31, 2021:                    
Money market funds  $69,487   $69,487   $   $