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Balance Sheet Components - Schedule of Other Current Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Other Liabilities Current [Abstract]    
Salaries and benefits $ 1,281 $ 2,302
Professional services 450 425
Deferred rent 19 27
Other 475 374
Total other current liabilities $ 2,225 $ 3,128