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Balance Sheet Details - Schedule of Accrued Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Accrued Liabilities Current [Abstract]    
Accrued research and development $ 2,287 $ 676
Accrued compensation 1,004 1,671
Other accrued liabilities 858 604
Total accrued liabilities $ 4,149 $ 2,951