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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, 2023
Sep. 30, 2022
Defined Benefit Plan Disclosure [Line Items]    
Net pension expense $ 3,171 $ 1,387
Pension Plan    
Defined Benefit Plan Disclosure [Line Items]    
Service cost 2,725 1,059
Interest cost 3,089 970
Expected return of plan assets (2,808) (403)
Amortization of actuarial (gains) losses 165 63
Net pension expense $ 3,171 $ 1,689