Pension and Other Postretirement Benefit Plans (Tables)

3 Months Ended

Dec. 31, 2023

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 December 31,
	Pension				Other Postretirement
	2023		2022		2023		2022
Service cost	$	30	$	57	$	14	$	19
Interest cost *	129		143		171		161
Amortization:
Prior service credit	—		—		(91)		(91)
Net actuarial gains *	(11)		(10)		(180)		(177)
Settlement losses *	—		1,271		—		—
Net benefit cost	$	148	$	1,461	$	(86)	$	(88)
* Non-service components of pension and postretirement expense are included in other income (deductions), net.