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Goodwill And Intangibles (Schedule of Changes) (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2018
USD ($)
Goodwill [Roll Forward]  
Balance at January 1 $ 55,831
Goodwill arising from acquisition 4,072
Adjustment to goodwill during measurement period (2,948)
Foreign exchange adjustment (186)
Balance at September 30 $ 56,769