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Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Assets:
U.S. treasury notes	$ 265,809	$ 307,362
Fair Value, Recurring | Level 1
Assets:
U.S. treasury notes	215,695	175,942
Total	265,809	307,362
Fair Value, Recurring | Level 1 | Money market funds
Assets:
Money market funds	50,114	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

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Fair value portion of asset recognized for present right to economic benefit.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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