Pension And Other Liabilities (Schedule Of Reconciliation Of The Lease Make-Good Provision) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Pension And Other Liabilities [Abstract]
Lease make-good provision, Beginning balance	$ 7,408	$ 6,667
Liabilities incurred during the year	288	62
Liabilities settled during the year
Accretion expense	343	291
Effect of changes in foreign currency	(273)	388
Lease make-good provision, Ending balance	$ 7,766	$ 7,408