Revenue Recognition (Schedule Of Contract Assets And Liabilities) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Opening [Member]
Contract Receivables and Liabilities [Line Items]
Receivables	$ 1,269	$ 1,103
Contract Liabilities	2,986	2,200
Closing [Member]
Contract Receivables and Liabilities [Line Items]
Receivables	1,351	1,269
Contract Liabilities	2,417	2,986
Increase/(Decrease) [Member]
Contract Receivables and Liabilities [Line Items]
Receivables	82	166
Contract Liabilities	$ (569)	$ 786