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Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands			3 Months Ended	9 Months Ended
	Aug. 01, 2025	Jul. 30, 2025	Sep. 30, 2025	Sep. 30, 2025	Sep. 30, 2024
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loss on issuance of convertible notes			$ 9,952	$ 9,952
Debt conversion, number of shares issued	2,810,428	15,176,862
Preferred stock warrant liability
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Change in fair value, gain (loss) included in earnings				(256)	$ (75)
Fair value, issuances				0
Series E purchase option
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Change in fair value, gain (loss) included in earnings				(11,719)
Fair value, issuances				218
Convertible notes
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Change in fair value, gain (loss) included in earnings				$ 7,739
Fair value assumption, IPO scenario			97.00%	97.00%
Fair value assumption, liquidation event			3.00%	3.00%
Fair value, issuances				$ 49,815

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Fair Value Assumptions, IPO Scenario Percentage

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Fair Value Assumptions, Liquidation Event, Percentage

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Gain (Loss) On Issuance Of Convertible Notes

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The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3).

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Amount of issuances of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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