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Fair Value Measurements - Schedule of Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Assets:
Assets measured at fair value		$ 43,008
Liabilities:
Common stock warrant liabilities	$ 0	252,178
Money market funds
Assets:
Cash and cash equivalents	1,417	22,787
U.S. treasury bills
Assets:
Cash and cash equivalents		20,221
Level 1
Assets:
Assets measured at fair value		43,008
Liabilities:
Common stock warrant liabilities		126,898
Level 1 | Money market funds
Assets:
Cash and cash equivalents	1,417	22,787
Level 1 | U.S. treasury bills
Assets:
Cash and cash equivalents		20,221
Level 2
Assets:
Assets measured at fair value		0
Liabilities:
Common stock warrant liabilities		125,280
Level 2 | Money market funds
Assets:
Cash and cash equivalents	0	0
Level 2 | U.S. treasury bills
Assets:
Cash and cash equivalents		0
Level 3
Assets:
Assets measured at fair value		0
Liabilities:
Common stock warrant liabilities		0
Level 3 | Money market funds
Assets:
Cash and cash equivalents	$ 0	0
Level 3 | U.S. treasury bills
Assets:
Cash and cash equivalents		$ 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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