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Accrued Expenses and Other Current Liabilities - Summary of Accrued Expenses and Other Current Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Payables And Accruals [Abstract]    
Accrued offering costs $ 806 $ 876
Accrued clinical trials 300 376
Accrued compensation 340 400
Accrued other 39 126
Total accrued expenses and other current liabilities $ 1,485 $ 1,778