Balance Sheet Components - Schedule of Accrued Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Balance Sheet Components [Abstract]
Accrual for litigation	$ 7,203	$ 7,203
Accrued professional fees	1,460	824
Accrued sales and use taxes	612	754
Deferred rent	322	445
Accrual for inventory in transit	658	602
Contract liability	262	219
Others	860	157
Total accrued liabilities	$ 11,377	$ 10,204