Leases - Schedule of Cost Components of Operating Lease (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Leases [Abstract]
Operating lease expense		$ 151	$ 109	$ 411	$ 328
Variable lease expense	[1]	$ 137	$ 136	$ 404	$ 404
Remaining lease term (years)		1 year 6 months	2 years 6 months	1 year 6 months	2 years 6 months
Discount rate		3.75%	3.75%	3.75%	3.75%

[1] Variable lease costs are payments that vary because of changes in facts or circumstances and include common area maintenance and property taxes related to the premises. Variable lease costs are excluded from the calculation of minimum lease payments.