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Accrued And Other Liabilities (Schedule Of Other Liabilities) (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Accrued And Other Liabilities [Abstract]    
Arbitration award $ 11,282 $ 11,282
Long term employee indemnity 10,964 9,794
Defined benefit pension obligation 6,416 6,211
Long term tax liability 11,093 8,312
Long term earnouts related to acquisitions 6,977 9,673
Long term deferred revenue 7,773 7,956
Other long term liabilities 5,833 4,927
Total $ 60,338 $ 58,155