Assets and liabilities as well as costs of operating and finance leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Liabilities
Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization	$ 496	$ 396
Operating leases	295	261
Amortization of leased assets	101	101
Interest on finance leases	136	141
Total lease cost	$ 532	$ 503
Operating leases	6 years 328 days 12 hours	7 years 219 days
Financing leases	23 years 6 months	14 years 73 days
Weighted Average Discount Rate 1
Operating leases	3.61%	3.67%
Financing leases	4.97%	8.37%
Assets And Liabilities [Member]
Assets
Operating	$ 1,021	$ 1,182
Finance	3,791	1,402
Total Leased Assets	4,812	2,584
Liabilities
Operating	1,021	1,182
Finance	4,107	1,673
Total lease liabilities	$ 5,128	$ 2,855