Assets and liabilities as well as costs of operating and finance leases (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Liabilities
Operating leases	$ 72	$ 74	$ 218	$ 221
Amortization of leased assets	55	25	167	76
Interest on finance leases	41	36	41	103
Total lease cost	$ 168	$ 135	$ 426	$ 400
Operating leases	6 years 36 days 12 hours		6 years 36 days 12 hours		6 years 328 days 12 hours
Financing leases	21 years 255 days 12 hours		21 years 255 days 12 hours		23 years 6 months
Weighted Average Discount Rate 1
Operating leases	3.60%		3.60%		3.60%
Financing leases	3.70%		3.70%		5.00%
Assets And Liabilities [Member]
Assets
Operating	$ 1,231		$ 1,231		$ 1,021
Finance	3,912		3,912		3,791
Total Leased Assets	5,143		5,143		4,812
Liabilities
Operating	1,231		1,231		1,021
Finance	4,296		4,296		4,107
Total Lease Liabilities	$ 5,527		$ 5,527		$ 5,128