Commitments and Contingencies - Additional Information (Details) - USD ($)	1 Months Ended		3 Months Ended	6 Months Ended
	Jun. 30, 2020	Nov. 30, 2019	Jun. 30, 2020	Jun. 30, 2020
Non-cancelable operating sublease, expiration date for initial leased space				2025-01
Non-cancelable operating sublease, expiration date for expansion space leased				2022-12
Lessee, Operating Sublease, Existence of Option to Extend [true false]				true
Lessee, operating sublease, option to extend				options to extend for the entire premises through October 2028
Operating sublease, annual increase percentage for base rent				3.00%
Monthly base rent for permanent space		$ 63,425
Monthly base rent for temporary space		$ 28,745
Option to extend lease term of permanent space		12 months
Annual increase percentage for lease charges		3.00%
Sublease temporary monthly base rent	$ 63,425
Sublease annual increase percentage for lease charges	3.00%
Sublease period of base rent abatement	6 months
Sublease commencement date	Jul. 01, 2020
Sublease expiration date	Dec. 31, 2021
Lessee, operating lease, discount rate	7.00%		7.00%	7.00%
Weighted average remining lease term	3 years 7 months 6 days		3 years 7 months 6 days	3 years 7 months 6 days
Cash paid for operating lease liabilities			$ 800,000	$ 1,500,000
Rent expense			$ 800,000	$ 1,800,000
San Diego, California
Lease commencement date for permanent space		May 01, 2020
Lease expiration date for permanent space		Dec. 31, 2021
Lease commencement date for temporary space		Jan. 01, 2020