Revenue Recognition (Schedule Of Contract Assets And Liabilities) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Opening [Member]
Contract Receivables and Liabilities [Line Items]
Receivables	$ 749	$ 739	$ 1,269	$ 1,103
Contract Liabilities	2,842	2,769	2,986	2,200
Closing [Member]
Contract Receivables and Liabilities [Line Items]
Receivables	1,299	899	1,299	899
Contract Liabilities	2,607	3,038	2,607	3,038
Increase/(Decrease) [Member]
Contract Receivables and Liabilities [Line Items]
Receivables	550	160	30	(204)
Contract Liabilities	$ (235)	$ 269	$ (379)	$ 838