Commitments and Contingencies - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Operating right-of-use asset	$ 39,890,000	$ 582,000
Operating lease liability		700,000
Operating lease cost		$ 400,000
Current Headquarters
Lessee, Lease, Description [Line Items]
Discount rate (as a percent)	12.00%
Operating right-of-use asset	$ 39,900,000
Operating lease liability	41,905,000
Operating lease expense	$ 300,000
Building | Future Headquarters
Lessee, Lease, Description [Line Items]
Lease term	12 years
Future monthly rent expense	$ 600,000
Annual rent increase (as a percent)	3.00%
Building | Current Headquarters
Lessee, Lease, Description [Line Items]
Annual rent increase (as a percent)	3.00%
Monthly rent expense	$ 24,100