Employee Benefit Plans, Amounts Recognized in Financial Condition (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Other liabilities [Abstract]
Projected benefit obligation in excess of fair value of pension plan	$ 559	$ 809
Accumulated other comprehensive loss, net of taxes [Abstract]
Net losses and past service liability	$ (1,633)	$ (1,604)

Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans.

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Name:	us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant