assets and liabilities as well as the costs of operating and finance leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Liabilities
Operating leases	$ 261	$ 255
Amortization of leased assets	101	200
Interest on finance leases	141	173
Total lease cost	$ 503	$ 628
Weighted Average Remaining Lease Term
Operating leases	7 years 219 days	8 years 69 days 8 hours 24 minutes
Financing leases	14 years 73 days	15 years 36 days 12 hours
Weighted Average Discount Rate 1
Operating leases	3.67%	3.70%
Financing leases	8.37%	8.41%
Assets And Liabilities [Member]
Assets
Operating	$ 1,182	$ 1,360
Finance	1,402	1,503
Total Leased Assets	2,584	2,863
Liabilities
Operating	1,182	1,360
Finance	1,673	1,718
Total lease liabilities	$ 2,855	$ 3,078