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Goodwill And Intangibles (Schedule of Changes) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Goodwill [Roll Forward]        
Balance at January 1     $ 82,092 $ 100,722
Goodwill arising from business combinations     0 9,426
Adjustment to goodwill during measurement period     0 448
Foreign exchange adjustment     228 (642)
Impairment losses $ (44,589) $ 0 (44,589) 0
Balance at September 30 $ 37,731 $ 109,954 $ 37,731 $ 109,954