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Accrued And Other Liabilities (Schedule Of Other Liabilities) (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Jun. 30, 2018
Payables and Accruals [Abstract]      
Long term employee indemnity $ 14,369   $ 13,609
Long term tax liability 3,851   4,168
Defined benefit pension obligation 8,472   8,518
Long term deferred revenue 6,910   8,121
Other long term liabilities 8,439   4,915
Total $ 42,041 $ 39,331 $ 39,331