Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Net Income Per Share
Net income	$ 36,771	$ 28,967
Weighted average shares outstanding (in shares)	83,876	91,183
Dilutive impact from:
Employee equity awards (in shares)	444	708
Dilutive weighted average shares outstanding (in shares)	84,320	91,891
Income per share
Basic (in dollars per share)	$ 0.44	$ 0.32
Dilutive (in dollars per share)	$ 0.44	$ 0.32