Commitments and Contingencies - Schedule of Operating Lease Amounts Recorded in Condensed Consolidated Balance Sheets (Details) - USD ($) $ in Thousands		Mar. 31, 2021	Dec. 31, 2020
Operating Leases
Current operating lease liabilities, net of tenant improvement allowances	[1]	$ 7,913	$ 7,913
Operating right-of-use assets		60,461	61,947
Operating lease liabilities, current		$ 3,568	$ 3,625
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]		Accrued and other liabilities	Accrued and other liabilities
Operating lease liabilities, noncurrent		$ 66,615	$ 66,556
Total operating lease liabilities		$ 70,183	$ 70,181

[1] Current portion of lease liabilities recorded in prepaid expenses and other current assets for which the lease incentives to be received exceed the minimum lease payments to be paid over the next twelve months.