Accrued And Other Liabilities (Schedule Of Other Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Payables and Accruals [Abstract]
Long-term employee indemnity	$ 13,846	$ 14,408
Long-term tax liability	10,999	5,011
Defined benefit pension obligation	10,770	10,357
Long-term deferred revenue	5,986	7,370
Other long-term liabilities	7,289	8,662
Total	$ 48,890	$ 45,808