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Cash Equivalents and Short-Term Investments
 3 Months Ended
Mar. 31, 2024
Investments, Debt and Equity Securities [Abstract]  
Cash Equivalents and Short-Term Investments Cash Equivalents and Short-Term Investments
The following table is a summary of our cash equivalents and short-term investments:
March 31, 2024December 31, 2023
in thousandsAdjusted CostUnrealized GainUnrealized LossFair ValueAdjusted CostUnrealized GainUnrealized LossFair Value
U.S. treasury securities$147,818 $— $(4)$147,814 $133,168 $30 $— $133,198 
Commercial paper56,508 — (22)56,486 49,433 — (15)49,418 
Money market funds41,809 — — 41,809 39,280 — — 39,280 
U.S. government agency obligations8,430 1 — 8,431 3,961 — (1)3,960 
Total cash equivalents and available-for-sale securities$254,565 $1 $(26)$254,540 $225,842 $30 $(16)$225,856 
Classified as:
Cash equivalents$110,077 $109,270 
Short-term investments144,463 116,586 
Total cash equivalents and available-for-sale securities$254,540 $225,856 
As of March 31, 2024 and December 31, 2023, all of our cash equivalents and short-term investments were available-for-sale and had contractual maturities of less than one-year. There were no other-than-temporary impairments on such securities.