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PENSION & POSTRETIREMENT PLANS (Tables)
9 Months Ended
Jun. 30, 2024
Retirement Benefits [Abstract]  
Schedule of Pension and Postretirement Plan Expenses
Total periodic pension and postretirement (income) expense is summarized below:
 Three Months Ended June 30,Nine Months Ended June 30,
 2023 2024 2023 2024 
Service cost$12 9 36 27 
Interest cost54 55 162 165 
Expected return on plan assets
(71)(74)(213)(222)
Net amortization(18)(14)(58)(42)
Total$(23)(24)(73)(72)