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Pension and Other Postretirement Benefits - Funded Status of Other Postretirement Benefit Plans and Amounts Recognized in the Consolidated Balance Sheets (Details) - Other Postretirement Benefit Plan, Defined Benefit [Member] - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Change in Benefit Obligation
Benefit Obligation, Beginning of Year	$ 15,323	$ 18,160
Interest Cost	613	629	$ 673
Actuarial Losses	(264)	(323)
Benefits and expenses paid	(1,505)	(2,208)
Plan Amendments	(1,525)	(935)
Benefit Obligation, End of Year	12,642	15,323	$ 18,160
Funded Status of Plans	(12,642)	(15,323)
Amounts Recognized in Balance Sheet
Short-term Accrued Benefit Obligation	(1,468)	(1,598)
Accrued Postretirement Benefits	(11,174)	(13,725)
Net Amount Recognized	$ (12,642)	$ (15,323)

X

- Definition

Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan.

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

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Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status.

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Amount of cost recognized for passage of time related to defined benefit plan.

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Amount of increase (decrease) in benefit obligation of defined benefit plan from change in terms of existing plan or initiation of new plan.

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

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

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