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Acquired Intangible Assets - Calculation Of Estimated Future Amortization Expense (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]    
2019 (three months ended June 30) $ 92,081  
2020 321,079  
2021 229,729  
2022 210,174  
2023 143,209  
2024 and beyond 236,864  
Total $ 1,233,136 $ 1,296,637