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Restructuring Charges - 2016 Restructuring Plan - Changes in restructuring liabilities - (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Reconciliation of the changes in restructuring liabilities
Restructuring charges (credits)	$ 452	$ 1,421	$ 1,687	$ 2,983
2016 Restructuring Plan
Reconciliation of the changes in restructuring liabilities
Beginning balance for the period			3,614
Restructuring charges (credits)	541	1,421	2,272	2,983
Payments			(5,886)
2016 Restructuring Plan \| Employee separation costs (credits)
Reconciliation of the changes in restructuring liabilities
Beginning balance for the period			3,614
Restructuring charges (credits)	377	339	1,084	(41)
Payments			(4,698)
2016 Restructuring Plan \| Facility closure costs
Reconciliation of the changes in restructuring liabilities
Restructuring charges (credits)	$ 164	$ 1,082	1,188	$ 3,024
Payments			$ (1,188)