Assets held for rent - Schedule of Assets Held for Rent (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Shippers placed in service	$ 9,624	$ 9,505
Accumulated depreciation	(6,411)	(6,499)
Net	3,213	3,006
Shippers and related components in production	1,951	3,097
Total	$ 5,164	$ 6,103