Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Accrued Liabilities And Other Liabilities [Abstract]
Preclinical and clinical studies	$ 1,188	$ 1,764
Professional fees	1,202	55
Early exercise liability	472
Other accrued expenses	227	71
Total accrued expenses and other current liabilities	$ 3,089	$ 1,890

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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