Assets held for rent - Schedule of Assets Held for Rent (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Shippers placed in service	$ 9,866	$ 7,671
Fixed assets held for rent	1,468	4,686
Accumulated depreciation	(6,272)	(4,952)
Net	5,062	7,405
Shippers and related components in production	2,651	1,659
Total	$ 7,713	$ 9,064