Revenue Recognition (Schedule Of Contract Assets And Liabilities) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Opening [Member]
Contract Receivables and Liabilities [Line Items]
Receivables	$ 652	$ 749	$ 1,351	$ 1,269
Contract Liabilities	3,706	2,842	2,417	2,986
Closing [Member]
Contract Receivables and Liabilities [Line Items]
Receivables	1,080	1,299	1,080	1,299
Contract Liabilities	4,702	2,607	4,702	2,607
(Decrease)/Increase [Member]
Contract Receivables and Liabilities [Line Items]
Receivables	428	550	(271)	30
Contract Liabilities	$ 996	$ (235)	$ 2,285	$ (379)