Commitments and Contingencies - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Sep. 30, 2015
Lessee, Lease, Description [Line Items]
Right-of-use assets	$ 600,000
Current Headquarters
Lessee, Lease, Description [Line Items]
Discount rate (as a percent)	12.00%
Right-of-use assets	$ 600,000
Operating lease liability	700,000
Operating lease cost	$ 400,000
Remaining lease term	1 year
Remaining lease payments due in the next twelve months	$ 300,000
Future Headquarters
Lessee, Lease, Description [Line Items]
Right-of-use assets	0
Operating lease liability	0
Building
Lessee, Lease, Description [Line Items]
Annual rent increase (as a percent)		3.00%
Building | Current Headquarters
Lessee, Lease, Description [Line Items]
Minimum monthly rental expense	24,100
Addition to minimum monthly rental expense	4,000
Building | Future Headquarters
Lessee, Lease, Description [Line Items]
Minimum monthly rental expense	$ 3,800,000
Annual rent increase (as a percent)	3.00%