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Cash and Cash Equivalents and Investments
 3 Months Ended
Mar. 31, 2023
Cash and Cash Equivalents and Investments [Abstract]  
Cash and Cash Equivalents Disclosure Cash and Cash Equivalents and Investments
 
The fair value of cash and cash equivalents and investments held at March 31, 2023 and December 31, 2022 are as follows: 
 As of March 31, 2023
 Amortized CostGross Unrealized GainsGross Unrealized LossesEstimated Fair Value
 (in thousands)
Cash and cash equivalents$26,000 $1 $— $26,001 
Securities maturing within one year:    
U.S. treasury securities70,894 9 (142)70,761 
Corporate debt securities9,206 — (31)9,175 
Total short-term investments$80,100 $9 $(173)$79,936 
Total cash and cash equivalents and investments$106,100 $10 $(173)$105,937 
 As of December 31, 2022
 Amortized CostGross Unrealized GainsGross Unrealized LossesEstimated Fair Value
  (in thousands) 
Cash and cash equivalents$46,345 $— $— $46,345 
Securities maturing within one year:    
U.S. treasury securities74,022 — (342)73,680 
Corporate debt securities18,418 — (86)18,332 
Total short-term investments$92,440 $— $(428)$92,012 
Total cash and cash equivalents and investments
$138,785 $— $(428)$138,357 

There were no realized losses during either of the three month periods ended March 31, 2023 and 2022, respectively.