Restructuring Charges - 2016 Restructuring Plan (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Feb. 01, 2016
Restructuring Charges
Restructuring expenses	$ 1,022	$ 527
2016 Restructuring Plan
Restructuring Charges
Estimated restructuring charges			$ 19,000
Restructuring expenses	878	527
2016 Restructuring Plan | Employee separation costs
Restructuring Charges
Estimated restructuring charges			10,000
Restructuring expenses	414	(590)
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	$ 464	$ 1,117