Balance sheet details - Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Accrued expenses:
Accrued transaction costs	$ 2,459	$ 0
Accrued professional services	1,010	1,953
Accrued compensation and related benefits	1,438	1,108
Other accruals	113	318
Other current liabilities:
Other payroll expenses	247	175
Customer deposit	21	21
Current portion of long term debt, net	30	39
Total accrued expenses and other current liabilities	$ 5,318	$ 3,614