Leases - Schedule of Cost Components of Operating Lease (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Leases [Abstract]
Operating lease expense		$ 140	$ 151	$ 279	$ 260
Variable lease expense	[1]	$ 190	$ 132	$ 374	$ 267
Remaining lease term (years)		6 years	1 year 9 months	6 years	1 year 9 months
Discount rate		2.45%	3.75%	2.45%	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.