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Net Income Per Share - Calculations of Basic and Diluted Net Income per Share and Basic and Dilutive Weighted Average Shares Outstanding (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Earnings Per Share [Abstract]    
Net income $ 34,755 $ 35,000
Weighted average shares outstanding (in shares) 73,024 79,048
Dilutive impact from:    
Share-based payment awards (in shares) 585 337
Dilutive weighted average shares outstanding (in shares) 73,609 79,385
Income per share    
Basic (in dollars per share) $ 0.48 $ 0.44
Dilutive (in dollars per share) $ 0.47 $ 0.44