Balance Sheet Components - Schedule of Accrued Expenses and Other Current Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Accounts Payable and Accrued Liabilities, Current [Abstract]
Accrued payroll and welfare	$ 5,658	$ 5,790
Accrued expenses - selling expenses	1,793	44
Supplier reimbursement	1,355	2,247
Accrued sales discount	850	903
Accrued expenses - general and administrative	472	1,190
Accrued expenses - research and development	94	161
Deferred government grants	40	40
Employee reimbursement	61	648
Accrued professional services	113	837
Other accrued liabilities	77	75
Accrued expenses and other current liabilities	$ 10,513	$ 11,935