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Goodwill and Other Identifiable Intangible Assets (Net Identifiable Intangible Assets) (Details) - USD ($)
$ in Thousands
3 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Finite-lived Intangible Assets [Roll Forward]    
Balance as of June 30, 2017 $ 101,513  
Additions 57,000  
Amortization of intangible assets (5,011) $ (3,154)
Foreign currency translation adjustment 821  
Balance as of September 30, 2017 $ 154,323  
Minimum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Weighted average useful life 4 years  
Maximum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Weighted average useful life 12 years