Accumulated Other Comprehensive Loss - Reclassifications (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Loss [Line Items]
Currency exchange contracts	$ (88)	$ (118)
Recognition of actuarial losses	1,970	2,105
Reclassification of unrealized loss on expired derivatives designated and qualified as cash flow hedges, tax	0	0
Provision for income taxes	9,602	4,879
Reclassification out of Accumulated Other Comprehensive Loss [Member] | Accumulated Net (Loss) Gain from Designated or Qualifying Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Loss [Line Items]
Total before tax	(396)	(387)
Reclassification of unrealized loss on expired derivatives designated and qualified as cash flow hedges, tax	0	0
Net of tax	(396)	(387)
Reclassification out of Accumulated Other Comprehensive Loss [Member] | Accumulated Defined Benefit Plans Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Loss [Line Items]
Amortization of transition obligations	23	23
Amortization of prior service credit	167	(119)
Recognition of actuarial losses	1,780	2,201
Total before tax	1,970	2,105
Provision for income taxes	(191)	(271)
Net of tax	1,779	1,834
Reclassification out of Accumulated Other Comprehensive Loss [Member] | Forward Starting Interest Rate Swap Contracts [Member] | Accumulated Net (Loss) Gain from Designated or Qualifying Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Loss [Line Items]
Forward starting interest rate swaps	566	545
Reclassification out of Accumulated Other Comprehensive Loss [Member] | Currency Forward Contracts [Member] | Accumulated Net (Loss) Gain from Designated or Qualifying Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Loss [Line Items]
Currency exchange contracts	$ (170)	$ (158)