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Income Taxes - Details of Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Income Tax Disclosure [Abstract]    
Income before income taxes $ 222,220 $ 134,299
Provision for income taxes $ 44,119 $ 29,402
Effective tax rate (as a percent) 19.90% 21.90%