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, 2019	Sep. 30, 2018
Net income	$ 46,284	$ 38,066
Weighted average shares outstanding (in shares)	68,441	70,988
Dilutive impact from:
Share-based payment awards (in shares)	876	1,027
Dilutive weighted average shares outstanding (in shares)	69,317	72,015
Income per share
Basic (in dollars per share)	$ 0.68	$ 0.54
Dilutive (in dollars per share)	$ 0.67	$ 0.53