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Goodwill and Other Identifiable Intangible Assets (Net Identifiable Intangible Assets) (Details) - USD ($)
$ in Thousands
3 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Finite-lived Intangible Assets [Roll Forward]    
Balance as of June 30, 2018 $ 136,806  
Additions 0  
Amortization expense (5,003) $ (5,011)
Foreign currency translation adjustment (410)  
Balance as of September 30, 2018 $ 131,393