Commitments - Additional Information (Details) $ in Millions	1 Months Ended	9 Months Ended
	Jun. 30, 2020 USD ($) ft²	Sep. 30, 2020
Commitments [Line Items]
Operating lease expiration year		2025
Operating lease, term of contract	8 years
Operating leases, minimum lease payments | $	$ 10.1
Operating lease, option to extend	eight-year
Operating lease, existence of option to extend	true
Hayward, California
Commitments [Line Items]
Square feet of additional space | ft²	36,303