Leases - Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Leases
Operating lease cost	$ 149	$ 148
Lease, Cost, Total	149	148
Operating cash flows from operating leases	$ 145	$ 141
Weighted average remaining lease term in years	5 years 9 months 21 days		5 years 11 months 15 days
Weighted average discount rate	5.47%		5.45%
Operating lease right-of-use assets	$ 2,247		$ 2,365