Commitments and Contingencies - Schedule of Future Minimum Rental Payments Required Under Operating Leases in Place (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Sublease Income
Remainder of 2020	$ (215)
2021	(860)
2022	(860)
2023	(860)
2024	(860)
Thereafter	(430)
Total Payments	(4,085)
Operating Leases
Remainder of 2020	2,986
2021	19,482
2022	23,715
2023	20,484
2024	18,785
Thereafter	192,488
Total Payments	277,940
Less: Tenant improvement allowances	(21,343)
Less: Present value adjustment	(63,153)
Operating Lease, Liability	$ 193,444	$ 197,625