Consolidated Balance Sheet Components - Summary of Other Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Accrued Liabilities Current [Abstract]
Accrued personnel expenses	$ 8,632	$ 4,571
Professional fees	295	183
Other	616	196
Total other accrued liabilities	$ 9,543	$ 4,950

Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.

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