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PENSION PLANS AND OTHER POST-RETIREMENT BENEFITS - Components of Net Pension Expense (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2024
Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]        
Net pension expense     $ 6,813 $ 6,383
Pension Plan        
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 2,714 $ 2,828 5,542 5,553
Interest cost 3,148 3,122 6,485 6,211
Expected return of plan assets (2,842) (2,903) (5,871) (5,711)
Amortization of actuarial (gains) losses 330 165 657 330
Net pension expense $ 3,350 $ 3,212 $ 6,813 $ 6,383