Restructuring Charges - 2016 Restructuring Plan (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016	Feb. 01, 2016
Restructuring Charges
Restructuring expenses	$ 7,061	$ 7,168	$ 7,166
2016 Restructuring Plan
Restructuring Charges
Estimated restructuring charges				$ 19,000
Restructuring expenses	3,969	7,168
2016 Restructuring Plan | Employee separation costs
Restructuring Charges
Estimated restructuring charges				10,000
Restructuring expenses	246	3,486
2016 Restructuring Plan | Contract termination costs
Restructuring Charges
Estimated restructuring charges				1,000
2016 Restructuring Plan | Facility closure costs
Restructuring Charges
Estimated restructuring charges				$ 8,000
Restructuring expenses	$ 3,723	$ 3,682