Commitments and Contingencies - Lease Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Renewal term	5 years		5 years
Operating lease costs	$ 217	$ 217	$ 652,000	$ 652,000
Operating lease liabilities	$ 197	$ 178,000	$ 569	$ 540
Weighted average discount rate	6.50%		6.50%
Weighted average remaining lease term	4 years 29 days		4 years 29 days