Face (par) amount of debt instrument at time of issuance.

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Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Weichai Transactions (Details) - USD ($)		12 Months Ended
Weichai Transactions (Details) - USD ($)	Mar. 22, 2023	Dec. 31, 2025	Dec. 31, 2024	Aug. 30, 2024
Subsidiary, Sale of Stock [Line Items]
Term of collaborative arrangement (in years)	3 years
Related Party
Subsidiary, Sale of Stock [Line Items]
Purchased inventory		$ 39,800,000	$ 21,500,000
Shareholder’s Loan Agreement \| Subordinated Debt
Subsidiary, Sale of Stock [Line Items]
Debt instrument, face amount				$ 105,000,000.0