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Financial Instruments (Tables)
6 Months Ended
Jun. 30, 2026
Investments, Debt and Equity Securities [Abstract]  
Summary of Available-for-Sale Marketable Debt Securities
As of June 30, 2026 and December 31, 2025, the remaining contractual maturities, amortized cost, gross unrealized gains, gross unrealized losses, and fair value of marketable debt securities, which were considered as available-for-sale, by type of security were as follows (in thousands):
June 30, 2026
Remaining
Contractual
Maturities
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Fair
Value
U.S. Treasury securities0.4$281,936 $— $(235)$281,701 
December 31, 2025
Remaining
Contractual
Maturities
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Fair 
Value
U.S. Treasury securities0.4$154,383 $101 $— $154,484 
Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value
Accumulated unrealized losses on marketable debt securities that have been in a continuous loss position for less than 12 months and more than 12 months were as follows (in thousands):
June 30, 2026
Less than 12 monthsMore than 12 months
Estimated
Fair
Value
Gross
Unrealized
Losses
Estimated
Fair
Value
Gross
Unrealized
Losses
U.S. Treasury securities$281,701 $(235)$— $—