Quarterly report pursuant to Section 13 or 15(d)

Pension and Other Postretirement Benefit Plans (Tables)

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Pension and Other Postretirement Benefit Plans (Tables)
 6 Months Ended
Mar. 31, 2024
Retirement Benefits [Abstract]  
Net Periodic Pension and Other Postretirement Benefit Cost Net periodic pension and other postretirement benefit cost for the plans included the following:
  Three months ended March 31,
  Pension Other Postretirement
  2024 2023 2024 2023
Service cost $ 31  $ 31  $ 13  $ 19 
Interest cost * 129  105  171  161 
Amortization:        
Prior service credit —  —  (91) (91)
Net actuarial gains * (9) (6) (181) (177)
Net benefit cost $ 151  $ 130  $ (88) $ (88)

  Six months ended March 31,
  Pension Other Postretirement
  2024 2023 2024 2023
Service cost $ 61  $ 88  $ 27  $ 38 
Interest cost * 258  248  342  322 
Amortization:        
Prior service credit —  —  (182) (182)
Net actuarial gains * (20) (16) (361) (354)
Settlement losses * —  1,271  —  — 
Net benefit cost $ 299  $ 1,591  $ (174) $ (176)
* Non-service components of pension and postretirement expense are included in other income (deductions), net.