Restructuring Charges - 2016 Restructuring Plan (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018	Feb. 01, 2016
Restructuring Charges
Restructuring expenses	$ 1,771	$ 4,095	$ 7,061
2016 Restructuring Program
Restructuring Charges
Aggregate restructuring charges				$ 21,000
Restructuring expenses		2,250	3,969
2016 Restructuring Program | Employee separation costs
Restructuring Charges
Aggregate restructuring charges				11,000
Restructuring expenses		1,084	246
2016 Restructuring Program | Contract termination costs
Restructuring Charges
Aggregate restructuring charges				1,000
2016 Restructuring Program | Facility closure costs
Restructuring Charges
Aggregate restructuring charges				$ 9,000
Restructuring expenses		$ 1,166	$ 3,723