Pension and Other Postretirement Benefits - Amounts Related to Other Postretirement Benefit Plans Recognized in Accumulated Other Comprehensive (Loss) Income (Details) - Other postretirement benefit plans [Member] - USD ($) $ in Thousands	Jun. 30, 2022	Jun. 30, 2021
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Unrecognized Net Actuarial Losses	$ 2,657	$ 4,355
Unrecognized Net Prior Service Credits	(1,649)	(1,924)
Total	$ 1,008	$ 2,431