Lease Commitments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Lease Commitments
Lease liabilities	$ 801	$ 930
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Other Liabilities.	Other Liabilities.
Right-of-use assets	$ 787	$ 916
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other Assets.	Other Assets.
Weighted average remaining lease term	5 years 6 months 25 days	5 years 18 days
Weighted average discount rate	1.94%	2.39%
Lease cost
Operating lease cost	$ 358	$ 427
Total lease cost	$ 358	$ 427