Pension And Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2024

Retirement Benefits [Abstract]

Schedule of Pension and Postretirement Benefit (Credits) Costs [Table Text Block]

The following table details qualified pension and postretirement benefit costs included in the accompanying consolidated statements of income. The service cost component of net periodic pension (credit) cost is recorded in operating expenses in the consolidated statements of income while the remaining components are recorded in “Other income (expense) – net.”

	Three months ended
	March 31,
	2024		2023
Pension cost:
Service cost – benefits earned during the period	$	122	$	121
Interest cost on projected benefit obligation	396		516
Expected return on assets	(553)		(714)
Amortization of prior service credit	(22)		(33)
Net pension (credit) cost	$	(57)	$	(110)
Postretirement cost:
Service cost – benefits earned during the period	$	5	$	6
Interest cost on accumulated postretirement benefit obligation	77		85
Expected return on assets	(14)		(33)
Amortization of prior service credit	(482)		(618)
Net postretirement (credit) cost	$	(414)	$	(560)
Combined net pension and postretirement (credit) cost	$	(471)	$	(670)