Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Assets:
U.S. treasury notes	$ 257,680	$ 307,362
Fair Value, Recurring | Level 1
Assets:
U.S. treasury notes	194,552	175,942
Total	257,680	307,362
Fair Value, Recurring | Level 1 | Money market funds
Assets:
Money market funds	63,128	131,420
Fair Value, Recurring | Level 2
Assets:
U.S. treasury notes	0	0
Total	0	0
Fair Value, Recurring | Level 2 | Money market funds
Assets:
Money market funds	0	0
Fair Value, Recurring | Level 3
Assets:
U.S. treasury notes	0	0
Total	0	0
Fair Value, Recurring | Level 3 | Money market funds
Assets:
Money market funds	$ 0	$ 0