Property and equipment, net - Schedule of property and equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 5,280	$ 4,963
Accumulated depreciation	(3,349)	(2,746)
Property and equipment, net	1,931	2,217
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	337	338
Field Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,117	1,108
Information Technology Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	721	659
Tooling [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	2,109	1,847
Capitalized Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 996	$ 1,011