Restructuring Charges - 2016 Restructuring Plan (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2019
Restructuring Charges
Restructuring expenses	$ 192	$ 213	$ 1,580	$ 1,235
2016 Restructuring Program
Restructuring Charges
Aggregate restructuring charges					$ 21,000
Restructuring expenses		853		1,731
2016 Restructuring Program | Employee separation costs
Restructuring Charges
Aggregate restructuring charges					11,000
Restructuring expenses		293		707
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		$ 560		$ 1,024