Accrued expenses and other current liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accrued Expenses and Other Current Liabilities Abstract
Accrued cost of revenue	$ 26,773	$ 13,198
Related party accrued cost of revenue	1,451	0
Accrued compensation	3,858	4,688
Other accrued expenses	2,766	6,010
Total accrued expenses	34,848	23,896
Warranty reserves	7,279	8,004	$ 4,032
Current portion of operating lease liability	$ 740	$ 417
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Total other current liabilities	Total other current liabilities
Non-federal tax obligations	$ 119	$ 463
Total other current liabilities	$ 8,138	$ 8,884