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Pension Plans and Other Postretirement Benefit Plan - Schedule of Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Thousands
Jun. 30, 2024
Jun. 30, 2023
Pension Plans    
Defined Contribution Plan Disclosure [Line Items]    
Actuarial (loss) gain $ (7,376) $ (7,249)
Postretirement Plan    
Defined Contribution Plan Disclosure [Line Items]    
Actuarial (loss) gain $ 120 $ 203