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PENSION PLANS AND OTHER POST-RETIREMENT BENEFITS - Components of Net Pension Expense (Details) - USD ($)
$ in Thousands
 3 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Defined Benefit Plan Disclosure [Line Items]    
Net pension expense $ 3,463 $ 3,171
Pension Plan    
Defined Benefit Plan Disclosure [Line Items]    
Service cost 2,828 2,725
Interest cost 3,337 3,089
Expected return of plan assets (3,029) (2,808)
Amortization of actuarial (gains) losses 327 165
Net pension expense $ 3,463 $ 3,171