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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

X
- Definition Amount of defined benefit plan cost (credit), classified as other. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_NewAccountingPronouncementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |