Related Party Transactions - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended
	Feb. 28, 2025	Jan. 31, 2025	Sep. 30, 2025	Dec. 31, 2024
Related Party Transaction [Line Items]
Estimated liability of fee expense			$ 49,693	$ 44,726
Related Party
Related Party Transaction [Line Items]
Estimated liability of fee expense			25	$ 807
SWIEC | Related Party
Related Party Transaction [Line Items]
Purchase agreement, term (in years)		5 years
Minimum target period for renewal (in years)		3 years
Weichai America Corp | Related Party
Related Party Transaction [Line Items]
Other commitment, fee as a percentage of gross revenue	1.75%
Estimated liability of fee expense			$ 100