Accrued And Other Liabilities (Schedule Of Other Liabilities) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Payables and Accruals [Abstract]
Long term employee indemnity	$ 13,021	$ 14,408
Long term tax liability	10,653	5,011
Defined benefit pension obligation	10,104	10,357
Long term deferred revenue	6,518	7,370
Other long term liabilities	6,389	8,662
Total	$ 46,685	$ 45,808