Basis of Presentation Change in Accounting Principle (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Net other periodic post-employment costs	$ 59	$ 201	$ 180	$ 602
Adjustments for New Accounting Pronouncement [Member]
Net other periodic post-employment costs		$ 201		$ 602

Amount of defined benefit plan cost (credit), classified as other.

No definition available.

Name:	us-gaap_DefinedBenefitPlanOtherCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration