Balance Sheet Components - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Prepaid Expense And Other Assets Current [Abstract]
Advances to suppliers	$ 1,834	$ 956
Prepaid insurance	1,543	13
Other prepaid expenses	1,383	317
Total prepaid expenses and other current assets	$ 4,760	$ 1,286