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, 2024	Jun. 30, 2023	Jun. 30, 2022
Change in Benefit Obligation
Benefit Obligation, Beginning of Year	$ 7,891	$ 9,113
Interest Cost	424	417	$ 288
Actuarial Losses	16	(442)
Benefits and expenses paid	(1,039)	(1,067)
Plan Amendments	48	(130)
Benefit Obligation, End of Year	7,340	7,891	$ 9,113
Funded Status of Plans	(7,340)	(7,891)
Amounts Recognized in Balance Sheet
Short-term Accrued Benefit Obligation	(1,006)	(1,091)
Accrued Postretirement Benefits	(6,334)	(6,800)
Net Amount Recognized	$ (7,340)	$ (7,891)