Leases (Schedule of components of lease expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Operating lease expense	$ 1
Finance lease cost:
Amortization of right-of-use assets	5	$ 6
Interest on lease liabilities	0	1
Total finance lease cost	$ 5	$ 7