Leases (Schedule of Components of Lease Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Finance lease
Amortization of right-of-use asset	$ 997	$ 1,056
Interest on lease liabilities	1,353	1,475
Operating lease
Fixed lease cost	5,283	5,448
Variable lease cost	(259)	314
Short-term lease cost	1,037	996
Total lease expense	$ 8,411	$ 9,289