Stock-Based Compensation (Employee Restricted Stock Grant Details) (Details) - Employee Restricted Stock [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock granted (in shares)	12	28	9
Grant date fair value	$ 1,591	$ 2,923	$ 845
Weighted average grant date fair value per award (in dollars per share)	$ 134.07	$ 102.89	$ 91.13