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Accrued And Other Liabilities (Schedule Of Other Liabilities) (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Payables and Accruals [Abstract]    
Long term employee indemnity $ 14,105 $ 13,609
Long term tax liability 3,246 4,168
Defined benefit pension obligation 8,083 8,518
Long term deferred revenue 6,804 8,121
Other long term liabilities 8,940 4,915
Total $ 41,178 $ 39,331