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Balance Sheet Components - Schedule of Other Current Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Other Liabilities Current [Abstract]    
Salaries and benefits $ 2,302 $ 2,044
Professional services 425 946
Deferred rent 27  
Other 374 134
Total other current liabilities $ 3,128 $ 3,124