XML 21 R10.htm IDEA: XBRL DOCUMENT v3.24.3
Marketable Securities
9 Months Ended
Sep. 30, 2024
Investments, Debt and Equity Securities [Abstract]  
Marketable Securities Marketable Securities
The following table summarizes the Company’s available-for-sale marketable securities as of September 30, 2024 and December 31, 2023:
As of September 30, 2024
(in thousands)Amortized CostGross Unrealized GainsGross Unrealized LossesEstimated Fair Value
Marketable securities:
Short-term investments:
U.S. government securities$191,957 $600 $— $192,557 
Corporate debt securities40,063 193 — 40,256 
Commercial paper59,350 — — 59,350 
Long-term investments:
U.S. government securities77,101 292 — 77,393 
Corporate debt securities43,589 522 — 44,111 
Total$412,060 $1,607 $— $413,667 
As of December 31, 2023
(in thousands)Amortized CostGross Unrealized GainsGross Unrealized LossesEstimated Fair Value
Marketable securities:
Short-term investments:
U.S. government securities$228,579 $212 $— $228,791 
Corporate debt securities9,629 — 9,631 
Commercial paper64,724 — 64,727 
Long-term investments:
U.S. government securities141,102 755 — 141,857 
Corporate debt securities41,310 219 — 41,529 
Total$485,344 $1,191 $— $486,535 
The Company’s marketable securities are available-for-sale securities and consist of high-quality, highly liquid debt securities including corporate debt securities, U.S. government securities, non-U.S. government securities, and commercial paper.
The Company’s securities classified as short-term marketable securities mature within one year or less of the balance sheet date. Marketable securities that mature greater than one year from the balance sheet date are classified as long-term. As of September 30, 2024, the Company did not hold any investments with maturity dates greater than five years.
As of, and for, the three and nine months ended September 30, 2024,