Basis of Presentation Change in Accounting Principle (Details) - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2017	Sep. 30, 2016
Net other periodic post-employment costs	$ 60	$ 201
New Accounting Principles, Early Adoption [Domain]
Net other periodic post-employment costs		$ 201

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