Pension and Other Postretirement Benefits - Components of Net Periodic Pension Income (Details) - Pension plans contribution [Member] - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Net periodic pension income
Service cost	$ 297	$ 238
Interest cost	8,907	8,040
Expected return on plan assets	(11,161)	(10,026)
Amortization of transition obligation	19	21
Amortization of prior service cost (credit)	(1)	2
Recognition of actuarial losses	1,444	1,105
Net periodic pension income	$ (495)	$ (620)