Commitments and Contingencies - Additional Information (Details)	6 Months Ended
	Jun. 30, 2020 Agreement
Lessee Lease Description [Line Items]
Number of lease agreements	2
Offices and Laboratory | Mountain View, California | Lease Agreements One
Lessee Lease Description [Line Items]
Lessee operating lease expiry month and year	2024-09
Offices and Laboratory | Mountain View, California | Lease Agreements Two
Lessee Lease Description [Line Items]
Lessee operating lease expiry month and year	2025-04