Employee Benefit Plans (Employer Contributions) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Matching contributions	$ 875	$ 735	$ 626
Discretionary contributions	3,413	3,617	5,350
Total contributions	$ 4,288	$ 4,352	$ 5,976